Opus BT - C3100 V2.2 Smart Battery Charger

- PURPLISH BLUE EU PLUG 126488802

Charge Discharge Test Refresh 4 Channels for Li-ion NiCd NiMh Batteries
$34.99
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Opus BT - C3100 V2.2 Smart Battery Charger

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Main Features:
NEW LED back light displays charging / discharging / quick test / circuit more clearly in the dark
NEW refresh mode can show you batteries' capacity, letting you know real magnitude
NEW added quick test mode to test the battery impedance
Four working mode available at user's choice: Charge, Discharge, Test, Quick Test and Refresh
● 4 independent charging slots charge rechargeable batteries of different types and sizes and with different capacities at the same time
● Charging current can be selected to be 200mA, 300mA, 500mA, 700mA or 1000mA ( 1500mA and 2000mA can be applied when only slot 1 or 4 is selected ). Default discharging current is 500mA
● Integrates the minus delta voltage ( -ΔV ) for NiCd or NiMh batteries charging termination, and for Li-ion batteries charging to 4.2V with pre-selected constant current. ( 3.7V Li-FeO4 and 4.35V high voltage batteries charging mode can be selected through switch on board )
● Easy-to-read LCD with back light showing battery Voltage, Charge / Discharge Current, Charging Time, Battery Capacity, etc.
● Includes overheat detection to protect rechargeable batteries and charger itself from overheating
● Designed for AA ( LR6 ) and AAA ( LR3 )NiCd, NiMH or 3.7V Li-ion rechargeable batteries in size type of 18650, 14500, 16340, 10440, also compatible with 10340, 18650, 26650, 26500 ( printed on the package ) and 17670, 18490, 17500, 17335 ( printed on the product )
● Operating temperature: 0 - 40 deg.C
● Max charging capacity: up to 20000mAh
● Power adapter: DC 12V, 3.0A ( output ), 100 - 240V, 50 / 60Hz ( input )
● Please NOTE: batteries are not included

Highlights:
1. Voltage update rate is 30s instead of 60s.
2. Charging voltage is regulated to 4.7V instead of 5.0V, thus loading on power adapter when batteries are flat is less. 5.0V charging voltage has problem in regulating the correct current level due to this over loading current on power adapter, which lead to Panasonic brand Li-ion batteries showed wrong charging capacity value ( + 25 percent ). With 4.7V charging voltage, the load on power adapter is greatly reduced and thus can make all types of batteries charged properly.
3. 4.35V charging time can be very long because charging current is regulated in entering the CV stage at 4.12V, which is same as 4.2V type. Now 4.35V charging algorithm is changed to 4.27V.
5. Better safety feature: PCB temperature was used to in controlling fan on / off only with 2.0V, now this function is enhanced so that temperature is monitored for entering thermal shutdown mode when excessive high temperature is reached. It is especially helpful when fan is not running and which can lead to plastic melt down happening.
6. New fan cover provides better protection for cooling fan.
7. Charging current range: 200mA, 300mA, 500mA, 700mA, 1000mA, 1500mA, 2000mA
8. Discharge current range:200mA, 300mA, 500mA, 700mA, 1000mA ( Li-ion batteries only )
9. Max. charging capacity: 20000mAh
10. Voltage deviation: < 0.03V @4.2V
11. Current deviation: < 5pct

Specification

General

Brand: Opus
Type: Charger
Model: BT-C3100 V2.2
Plug: EU adapter,UK plug,US adapter
Charging Cell Type: Lithium Ion,Ni-MH,NiCd
Compatible: 10440,14500,16340,18650
Charging Cell Qty: 4
Input Voltage: AC 100~240V 50/60HZ
Output Voltage: DC 12V, 3.0A

Functions

LCD Screen: Yes
Circuit Detection: Yes
Protected Circuit: Yes
Short Circuit Protection: Yes
Over Voltage Protection: Yes
Over Charging Protection: Yes
Over Discharging Protection: Yes

Dimension and Weight

Product weight: 0.2340 kg
Package weight: 0.5490 kg
Package size (L x W x H): 16.00 x 22.00 x 5.00 cm / 6.3 x 8.66 x 1.97 inches

Package Contents

Package Contents: 1 x Opus BT - C3100 V2.2 Intelligent Battery Charger, 1 x Power Adapter, 1 x English User Manual

 

This charger is an analyzing charger for LiIon and NiMH batteries, which means the charger can charge and discharge while measuring.

 

When the charger is turned on, it displays test where all the text can be seen. 
When startup is finished it is possible to select mode:

  • CHARGE: Charge battery with 200 to 1000 (2000) mA.
  • DISCHARGE: Discharge battery with 200 to 1000 mA.
  • DISCHARGE REFRESH: Discharge and charge the battery 3 times.
  • CHARGE TEST: Charge, discharge and charge the battery, show how much current was discharged.
  • QUICK TEST: Measure the internal resistance of the battery.


When display is flashing it is possible to select mode and current.
Using the slot button it is possible to reselect a slot and change parameters for it, also when charger is working.
When putting multiple batteries in the charger at the same time, it is possible to select mode and current simultaneous for all of them (Very nice).

When charging or discharging it is possible to use the DISPLAY button to select between V, mA and mAh.
The display button can also be used when the charge/discharge is finished, but the charger will change back to FULL display rather quickly.



Here is an example where I have selected different functions for each slot.



Each time a button is pressed, the light turns on for a 20 seconds.
The FULL and NULL message can also be seen.

The charger uses an external 12 volt power supply at 3A ( see later ).
It has a fan, this is necessary to handle all four channels at full power. Even with only one channel in use the fan, it start and stop very often. The fan is not very loud, but due to the starting and stopping it is very annoying.


  

The charger uses the classical slider construction to handle most battery sizes. The slider works smoothly and can handle sizes from 32mm to 72.5mm.
For measuring internal resistance the slider is not very good, it often has a high connection resistance.



A couple of different NiMH batteries in the charger.



And some LiIon batteries.

Using only slot 1 and 4, the maximum charge current is 2000mA.
In all other cases the maximum charge current is 1000mA.
The maximum discharge current is always 1000mA.

Charge currents: 200mA, 300mA, 500mA, 700mA, 1000mA, 1500mA, 2000mA

Discharge currents: 200mA, 300mA, 500mA, 700mA, 1000mA




   

    
 

The charger can easily handle 
70mm long batteries.
It is recommended to charge smaller batteries in the two center slots.
The charger has an internal switch marked with 3.7V, 4.20V and 4.35V. I have not tested this switch, because it is internal, but it might be possible to charge other Li-ion chemistries.


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FAQ for Opus BT - C3100 V2.2 Smart Battery Charger

  • Does Opus BT - C3100 charger have CE certificate?

    Yes, it does.
  • Can this charge Sub-C batteries?

    Yes, it can.
  • How to turn on it?

    Connect the power supply, it will turn on automatically.
  • How does it discharge?

    Press the "MODE" button subsequently to Discharge mode.
  • Can this item be shipped to my country?

    We can deliver orders to most countries. For a detailed explanation of each shipping method, destination and approximate delivery time, please check our website: https://www.gearbest.com/about/shipping-methods.html

Customer Questions & Answers

  • All(59)
  • Product Information(40)
  • Stock Status(11)
  • Payment(1)
  • About Shipping(7)
  • Others
Q

Hello, is this charger compatibile with Ni-Zn (Nickel - Zinc) batteries ? thanks.

By Klement Dec-27/2017 21:58:53

A

Hello Klement,

It is just for Li-ion NiCd NiMh Batteries. 


Let me know if you need any further assistance. 


Q

Hi Will you put 9.34$ on packet to avoid taxa and customs Thanks in advance

By Jimmy Aug-01/2017 07:48:46

A

Hello Jimmy,
Thanks for your inquiry.

Sorry, we cannot declare a lower value on the package.

Q

Hello, I'm thinking about ordering this product along with a set of batteries, but can you ship them to Saudi Arabia?

By Cullu Jun-06/2017 12:53:35

A

Hello, Cullu

Thank you for the inquiry.

This item can be shipped to Saudi Arabia.

You can check if you are able to place the order successfully with the batteries, if yes than we can ship the items to Saudi Arabia.

Please feel free to contact us if you have additional questions.

Q

ESTE CARGADOR..CARGA CUALQUIER TIPO DE PILAS DOBLE AA Y TRIPLE AAA? EL APARATO SE CONECTA A UN ENCHUFE O COMO ES ELPROCEDIMIENTO ,CUANTO DE GARANTIA TIENE EL PRODUCTO Y SI HACEN ENVIOS A COLOMBIA. GRACIAS

By nathaly Apr-23/2017 20:41:41

A

Hello nathaly,
Designed for AA ( LR6 ) and AAA ( LR3 )NiCd, NiMH or 3.7V Li-ion rechargeable batteries in size type of 18650, 14500, 16340, 10440, also compatible with 10340, 18650, 26650, 26500 ( printed on the package ) and 17670, 18490, 17500, 17335 ( printed on the product ) 
● Operating temperature: 0 - 40 deg.C
● Max charging capacity: up to 20000mAh
● Power adapter: DC 12V, 3.0A ( output ), 100 - 240V, 50 / 60Hz ( input )
● Please NOTE: batteries are not included

Q

1. Does this charger have a car 12V adapter? 2. If it does not, can you recommend one? Thanks.

By gylgamesh Mar-16/2017 20:11:36

A

Hello gylgamesh,

The Power Adapter is included, you could check the picture on our website.

Package Contents:  1 x Opus BT - C3100 V2.2 Intelligent Battery Charger, 1 x Power Adapter, 1 x English User Manual    


Q

Will this charge size D batteries, and if so how many will fit at one time?

By Luke Feb-08/2017 22:21:26

A

Hello Customer,

Designed for AA ( LR6 ) and AAA ( LR3 )NiCd, NiMH or 3.7V Li-ion rechargeable batteries in size type of 18650, 14500, 16340, 10440, also compatible with 10340, 18650, 26650, 26500 ( printed on the package ) and 17670, 18490, 17500, 17335 ( printed on the product )


If the size D battery belong to these type, then it can be used.

Q

Does this package include power adapter?

By Mircea Iancu Jan-30/2017 12:02:35

A

Hello Mircea,

Thanks for your inquiry.

Yes, it does.

Q

hello, why is the price for the us and eu version cheaper than the uk ?? Thank you

By sting Jan-05/2017 19:15:36

A

Hello sting,
Becuase they are different version.

Q

Hey, if this charger can charge LiFePO4

By Marat Sep-23/2016 13:29:40

A

Hello Marat,

This charger is suitable for 10340,10440,14500,16340 (RCR123),18500,18650,22650,26650 battery, please confirm your battery. Thanks for your attention. 

Q

do you have australian plug?

By n Jun-22/2016 23:06:51

A

Hello n,
We don't  have australian plug at the monment 

Q

Hello, is this charger compatibile with Ni-Zn (Nickel - Zinc) batteries ? thanks.

By Klement Dec-27/2017 21:58:53

A

Hello Klement,

It is just for Li-ion NiCd NiMh Batteries. 


Let me know if you need any further assistance. 


Q

ESTE CARGADOR..CARGA CUALQUIER TIPO DE PILAS DOBLE AA Y TRIPLE AAA? EL APARATO SE CONECTA A UN ENCHUFE O COMO ES ELPROCEDIMIENTO ,CUANTO DE GARANTIA TIENE EL PRODUCTO Y SI HACEN ENVIOS A COLOMBIA. GRACIAS

By nathaly Apr-23/2017 20:41:41

A

Hello nathaly,
Designed for AA ( LR6 ) and AAA ( LR3 )NiCd, NiMH or 3.7V Li-ion rechargeable batteries in size type of 18650, 14500, 16340, 10440, also compatible with 10340, 18650, 26650, 26500 ( printed on the package ) and 17670, 18490, 17500, 17335 ( printed on the product ) 
● Operating temperature: 0 - 40 deg.C
● Max charging capacity: up to 20000mAh
● Power adapter: DC 12V, 3.0A ( output ), 100 - 240V, 50 / 60Hz ( input )
● Please NOTE: batteries are not included

Q

1. Does this charger have a car 12V adapter? 2. If it does not, can you recommend one? Thanks.

By gylgamesh Mar-16/2017 20:11:36

A

Hello gylgamesh,

The Power Adapter is included, you could check the picture on our website.

Package Contents:  1 x Opus BT - C3100 V2.2 Intelligent Battery Charger, 1 x Power Adapter, 1 x English User Manual    


Q

Will this charge size D batteries, and if so how many will fit at one time?

By Luke Feb-08/2017 22:21:26

A

Hello Customer,

Designed for AA ( LR6 ) and AAA ( LR3 )NiCd, NiMH or 3.7V Li-ion rechargeable batteries in size type of 18650, 14500, 16340, 10440, also compatible with 10340, 18650, 26650, 26500 ( printed on the package ) and 17670, 18490, 17500, 17335 ( printed on the product )


If the size D battery belong to these type, then it can be used.

Q

Does this package include power adapter?

By Mircea Iancu Jan-30/2017 12:02:35

A

Hello Mircea,

Thanks for your inquiry.

Yes, it does.

Q

hello, why is the price for the us and eu version cheaper than the uk ?? Thank you

By sting Jan-05/2017 19:15:36

A

Hello sting,
Becuase they are different version.

Q

Hey, if this charger can charge LiFePO4

By Marat Sep-23/2016 13:29:40

A

Hello Marat,

This charger is suitable for 10340,10440,14500,16340 (RCR123),18500,18650,22650,26650 battery, please confirm your battery. Thanks for your attention. 

Q

do you have australian plug?

By n Jun-22/2016 23:06:51

A

Hello n,
We don't  have australian plug at the monment 

Q

how this charger can charge 4.35v ICR 18650? I can only charge 4.2v what I must do???

By Customer Mar-29/2016 12:35:10

A

Hello Customer,

Thank you for your inquiry.

Compatible : 22650, 10340, 18650, 16340 (RCR123), 14500, 18500, 26650, 10440 .

Charging voltage is regulated to 4.7V instead of 5.0V.


Q

Как долго будет идти посылка при бесплатной доставки заказа?

By Михаил Mar-15/2016 10:02:48

A

Hello Михаил,

The free shipping is only for the flat rate shipping.

We generally require between 3-7 business days to arrange shipment upon payment. The exact processing time varies depending on the item.
Please refer to our shipping estimation below:
A. Expedited Shipping: Around 3-7 business days to arrive.
B. Standard Shipping: Between 7-10 business days to be delivered.
C. Flat Rate Shipping: Between 10-25 business days to be received.
For more shipping details http://www.gearbest.com/about/shipping-methods.html

Q

Do you have it in stock?

By Alexey Romza Mar-02/2016 16:01:35

A

Hi ,

We are pleased to inform it is available for purchase.Have a nice day.


Q

When it would be in stock?

By Alexey Romza Feb-24/2016 11:49:06

A

Hi ,

We are pleased to inform it is available for purchase.Have a nice day.


Q

есть ли в наличие?

By александр Dec-05/2015 19:32:04

A
Thank you for your inquiry.
It is available for purchase.
Thanks in advance for your order.
Have a nice day.
Q

Hello ! When do you plan to have it back in stock in EU warehouse ?

By Mihai Nov-16/2015 16:45:08

A
Hi Mihai,
We are sorry that we do not have the plan to sell this phone in the EU warehouse for the moment. Please pay attention to our website for the update. Please feel free to ask if you have further questions. 
Q

Hello, when will you restock this item in the EU warehouse? It has been out of stock for some time now. Thank you, João.

By João Machado Nov-12/2015 21:16:43

A
Hi João, I am sorry that this item is unavailable in EU stock for now. We can not sure when it will be available in EU stock.  It depends on the customers' demand and the production of this item. We will try to replenish this item in EU as much as we can. Please kindly continually concern this item on our website. For now it is only available in China-Warehouse.  Thank you for your understanding. Please feel free to ask further presale questions.
Q

Qu'il y ait une présence dans ce produit maintenant

By JCS Oct-16/2015 14:58:42

A
Hi JCS , 
We are delighted to inform you that the item is in stock and is available for purchase.
Q

Hi there, do you know if you will be restocking this charger?

By Andreas Oct-13/2015 20:43:14

A
Hi Andreas, 
We are delighted to inform you that the item is in stock and is available for purchase.
Q

Hello! Will specify please. Whether there is in a presence this commodity now. Thank you, with impatience I expect an answer from you!

By Ivan Oct-01/2015 15:44:36

A
Hi Ivan, 
We are delighted to inform you that the item is in stock and is available for purchase.
Q

Hi! This item is available in stock? I want to pay but I fear a long wait. Привет ! Этот пункт есть в наличии на складе? Я хочу оплатить но боюсь долгого ожидания.

By Val. Aug-23/2015 01:34:48

A
Hi Val.,  
It is in stock and is available for purchase now. But there are a lot of customers placing order on our website, so it will be not in stock at any time. Thanks for your understanding! 
Q

do you have the Opus BT-C3100 Charger in stock?

By Richard Jul-16/2015 22:09:55

A
Hi,Richard ! I am delighted to inform you that the item is in stock and is available for purchase.
Q

is EU plug the only on-sale item? i want an US plug. Price difference i see now is around $10. thanks

By gg Jan-03/2016 11:29:02

A
Hi Gg, there are 3 standard plugs of this item - US, EU and UK plug versions. They are available now. Welcome to order! Thank you for your interest in our products.
To know more about plug-types, please refer to http://www.worldstandards.eu/electricity/plugs-and-sockets/

Q

Hi Will you put 9.34$ on packet to avoid taxa and customs Thanks in advance

By Jimmy Aug-01/2017 07:48:46

A

Hello Jimmy,
Thanks for your inquiry.

Sorry, we cannot declare a lower value on the package.

Q

Hello, I'm thinking about ordering this product along with a set of batteries, but can you ship them to Saudi Arabia?

By Cullu Jun-06/2017 12:53:35

A

Hello, Cullu

Thank you for the inquiry.

This item can be shipped to Saudi Arabia.

You can check if you are able to place the order successfully with the batteries, if yes than we can ship the items to Saudi Arabia.

Please feel free to contact us if you have additional questions.

Q

Good morning, my name is Rossano, and I live in Italy, because I would be interested in buying the OPUS charger BT-C3100 v2.2, (clearly version 2.2), first I would like to know if there are problems to dispatch in Italy, in particular, there may be additional costs for customs, or if there are additional payments after the purchase in Italy? I would also ask if I can buy the rechargeable lithium batteries AA and AAA, if there are no problems of shipping and customs for Italy? The payment, I would do it through paypal. Thank you. Best regards.

By Rossano Dec-16/2015 06:54:32

A
Hi Rossano, we can deliver it to Italy. Please add the items to cart and Proceed to Checkout, then fill the detail destination information. You will see the Available Shipping Methods, Estimated Shipping Time and Insurance. The Shipping Cost and Grand Total amount will be displayed for each shipping method. You can pay for order by PayPal and credit card via PayPal. For more information, please refer to http://www.gearbest.com/about/about-us.html According to our experience declaring a lower value on the shipping will usually allow customers to reduce possible import taxes or customs blockages. If you have any specific requirement regarding declaration, please leave us message when you check-out.  Thank you for your understanding. 
Q

hello sir/madam will you give tracking number when sending item from china to turkey with Flat Rate Shipping option? thanks.

By umit Oct-27/2015 23:36:45

A
Hi Umit,
For flat rate shipping:By default there is no tracking number as this is the cheapest shipping method. Most of the time we offer it for free.
However we can ugrade your delivery if you purchase the Tracking Number option available in the check out for a small fee.
Thank you for your inquiry.
Q

Hello. Can I order a product from a warehouse in Europe? I need a delivery to Russia.

By Denis Yakovlev Oct-27/2015 16:47:09

A
Hi Denis,
We can ship it from EU warehouse to Russia. Thank you for your inquiry.
Q

Hello. I Am a visitor in canada and i want to order this item. How long do you think will it take that i can have this charger in my hands befor i leave Canada. Thanks for your reply

By Mash Sep-18/2015 20:57:20

A
Hi Mash,
Total Delivery Time = Processing Time + Packaging Time + Shipping Time
We generally require between 3-5 business days to arrange shipment of orders. 
The exact delivery time depends on the shipping method you choose. 
1) Expedited Shipping: Around 4-7 business days to arrive.
2) Standard Shipping: Between 6-8 business days to be delivered.
3) Flat Rate Shipping: Between 10-25 business days to ship to the destination. 
Please check the details in the following link http://www.gearbest.com/about/shipping-methods.html
Q

How much days is the delivery to Russia

By St Jul-02/2015 18:56:01

A
Hi,St!  Total Delivery Time = Processing Time + Shipping Time
We will need approximately 3-5 business days to arrange shipment of your order. 

It depends on the shipping method you choose.
For small quantity orders,the processing time is 1-3 busiensss days while large quantity order may require a few days more.
1) Flat Rate Shipping: Between 7-25 business days to ship to the destination, by post office.
2) Standard Shipping: Between 6-8 busines days to be delivered, by EMS.
3) Expedited Shipping: Around 3-7 business days to arrive, by DHL/FEDEX/IB.
For more information about shipping http://www.gearbest.com/about/shipping-methods.html

59 Questions & Answers View All>

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Customer Reviews

4.89 out of 5
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  • Volha
    отлично
    Color:Purplish Blue Size:EU Plug
    Показатели напряжения теперь обновляются каждые 30 секунд, что в 2 раза чаще, чем в предыдущей версии.
    Исправлены неточности в показаниях мАч на некоторых Li-Ion аккумуляторах (в частности Panasonic NCR18650B, NCR18650PF). Для этого максимальная амплитуда напряжения при заряде была снижена с 5В до 4.65В).
    Улучшена работа алгоритма измерения нагрева платы контроллера. Устройство, с помощью кулера, теперь более эффективно поддерживает оптимальную температуру, не допуская перегрева, что особенно важно при заряде/разряде Li-ion аккумуляторов.
    Погрешность измерения силы тока во время заряда/разряда снижена с 5% до 3%. Точность замера напряжения аккумуляторов также повышена.
    Удалена функция предварительной зарядки с помощью импульсного тока. Сделано это для предотвращения зарядки при неправильной установке аккумулятора в слот. Ранее, устройство определяло перевернутую батарею, как имеющую напряжение в 0В (т.е. полностью разряженную и требующую предварительной зарядки) и начинало ее заряжать.
    Добавлена функция автоматической подзарядки для Li-ion аккумуляторов, устраняющее проблему разряда батареи после полного заряда (через устройство, а также из-за саморазряда). Подзарядка активируется автоматически при снижении напряжения в аккумуляторе до 4.12В.
    Уменьшен нагрев Ni-MH аккумуляторов во время зарядки.
    Время полной зарядки 4.35В и 3.7В аккумуляторов оптимизировано. CV режим зарядки для таких батарей теперь стартует при напряжении 4.26В и 2.8В соответственно.
    Suggestion
    греется вентилятор, немного завышает емкость акумуляторов

    May 24,2016

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  • p5bdkw
    BT-C3100 V2.2, An Excellent Charger
    Color:Purplish Blue Size:US Plug
    Backlit screen (will turn it off after 20 seconds)
    Backlit can be turned on permanently by pressing "DISPLAY" for 3 seconds.
    Charges Ni-Cd, NiMH and Li-ion batteries.
    Rubber feet.
    Approx. 3/16" bottom clearance
    6 internal temperature sensors.
    Small fan to exhaust heat.
    Fan noise has been improved from previous version (BT-C3100 V2.1).
    Excellent build quality.

    Has 5 MODES:
    CHARGE, DISCHARGE, REFRESH (DISCHARGE REFRESH),
    TEST (CHARGE TEST), QUICK TEST.

    CHARGE:
    Charges battery to maximum capacity.

    DISCHARGE:
    Discharges battery. Reduces the memory effect in the battery.

    REFRESH (DISCHARGE REFRESH):
    Discharges, then charges battery 3 complete cycles to optimize it's
    maximum capacity.

    TEST (CHARGE TEST):
    Checks the capacity of the battery.

    QUICK TEST:
    The charger checks the dynamic internal battery resistance.
    Consult manual for further details.

    This is an excellent, fun, easy to use, charger, that gives you total control of how
    you want to charge and maintain your batteries. A big plus is the ability to get the
    capacity of the batteries. The fan noise is considerably less annoying than the one
    on the V2.1 charger, IMHO. This charger is a great companion to my XTAR VP2.

    GearBest got it to me, fast!!!
    Thanks!!
    Suggestion
    None

    May 03,2015

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  • Lazzaro20
    Good charger
    Color:Purplish Blue Size:EU Plug
    This charger meets all my needs:
    It has a single channel charge, that is, you can upload an unlimited number of batteries, so that only one, two, three or all four simultaneously. This is important for me because I have a number of devices that only need a battery or three.
    Ordinary charger can only pairs (ie 2 or 4 at a time) load.
    You can combine the types of batteries colored, so you can simultaneously charge different capacity NiMH batteries and lithium ion batteries.
    Each span can individually adjust the charging current and the function.
    Functions dominates the charger following:
    * Download (Sure)
    * Exhaust (in order to avoid any memory effects with NiMH)
    * Refresh (charger repeatedly discharge and charge cycles until improvement in battery capacity you get more. So you can old batteries, or those who have long remained, still breathing a little 'life)
    However, Opus can also deal with Li-Ion batteries, and I have the chance to request a particular device in your home. Moreover, the battery of tests (measurement of internal resistance).
    I hardly use this feature however.
    A fan, the device is also to cool the batteries, which should become warm during charging. I was able to observe that the fans have already activated, very hot but the batteries were not.
    Conclusion: excellent charger handyman.
    Suggestion
    No

    Oct 28,2015

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  • GearDeal
    Opus BT-C3100 Version 2.2
    Color:Purplish Blue Size:EU Plug
    Chargeur universel intelligent livré dans une boite en carton avec une notice d'utilisation et un adaptateur EU.
    La finition du produit est correcte mais le plastique pas assez costaud pour lui offrir une
    résistance aux éventuelles chutes.
    A part ça, ce chargeur est intéressant du point de vu de ses possibilités et de son prix.
    Durant le chargement, le ventilo, de temps à autre, se met en marche et se fait entendre pendant quelques secondes.
    Globalement satisfait on verra dans le temps.

    This Opus version comes in a nice carton box with EU adapter and an operating
    instructions notice.
    Charger build quality is correct but plastic material is not strong enough in case of drop.
    Easy to start and use.
    One can easily follow charging phases individually and adjust features using different mode.
    Charging time is quiet fast.
    While charging fan become noisy for a few seconds (time to time)
    For now satisfied hope it will last.
    Last Gearbest price for this item is very competitive

    Vidéo de déballage /Unboxing : https://youtu.be/iBXfVkbuEHY
    Suggestion
    :x)

    Feb 25,2017

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  • Roman
    even better
    Color:Purplish Blue Size:UK Plug
    Bought it as a replacement to my 1st version of bt-c3100 by powerfocus that broke after inserting the battery in opposite way.
    It does much better job: you can top up battery that has for instance 4.16V - while previous version just notified about full battery
    It is much less obtrusive less noise from the fan, which works quieter and is on only when required.
    It does charging in some different way, battery that is old and has high internal resistance charges with smaller current, ends of charging cycle with smaller current than previous version of the charger
    Can charge two battery with 2A while previous version often just reset itself upon choosing 2 slots with 2A charging
    Overall I am very very happy about purchase, one can experience that this one is just better more refined device than previous one, however in the meantime I have notice there is new more advance charger available here - unfortunately
    The price here is the best I have came across by 30% than somewhere else!!!
    Suggestion
    I wish it be able to charge with 3A....
    1 month in transit (but its my fault I have chosen Nederland surface post)

    Dec 08,2015

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  • Denis
    Одно из лучших решений на рынке.
    Color:Purplish Blue Size:EU Plug
    Поддержка NiCd, NiMH и Li-ion (10340,10440, 14500, 16340, 18500, 18650, 26650, 26500)
    Ток заряда: 1-4 аккумулятора: 200, 300, 500, 700, 1000mA. 1-2 аккумулятора (зарядные отсеки 1 и 4): 200, 300, 500, 700, 1000, 1500 и 2000mA. Умеет разряжать аккумуляторы (еще имеется режим "Test" и "Refresh" - в первом случае аккумулятор полностью заряжается, после чего полностью разряжается и снова полностью заряжается, после чего показывает его реальную емкость, а во втором проделывает эти шаги три раза, после чего так-же показывает емкость). Инструкция на русском - https://cloud.mail.ru/public/233dbd6775c0/%D0%98%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F%20Opus%20BT-C3100.docx (полная) и https://cloud.mail.ru/public/966a9f9bd13c/%D0%AD%D0%BA%D1%81%D0%BF%D0%BB%D1%83%D0%B0%D1%82%D0%B0%D1%86%D0%B8%D1%8F%20OPUS%20BT-C3100%20%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%B0%D1%8F!.doc (укороченная). Покупкой доволен на все 100%.
    Suggestion
    За неделю использования не обнаружено.

    Jul 02,2015

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  • andrey
    Opus BT-C3100 V2.2
    Color:Purplish Blue Size:EU Plug
    Product description matches product.
    Functionality is excellent and the device is easy to use.
    The build quality is sufficient.
    The charging algorithm has nursed a number of my cells back to life.
    can charge external batteries too after some remaking.
    comes in a well made box with a manual.
    universal device with outstanding price for it's abilities.
    can charge/disharge/test/refresh ANY type of battery - NiCd, NiMh, Li-ion with power rating at 200ma, 300ma, 500ma, 700ma, 1000ma, 1500ma, 2000ma
    can test battery resistance in Omhs.
    Li-Ion batteries can be charged up to 3,7v 4,2v 4,35v depending on the battery chemistry.
    has powerful durable power supply (12v 3A mean 36W)
    and built-in on-demand cooling fan.
    precise built-in voltmeter and ampermeter.
    good designed controls and display with backlight.
    Suggestion
    Really none, except maybe for too weak and noisy fan.....

    Aug 08,2018

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  • Riccardo
    Uno dei migliori in assoluto
    Color:Purplish Blue Size:EU Plug
    Secondo me il migliore caricabatterie esistente. Compatibile con quasi tutte le batterie e di ogni tipo, non solo carica ma analizza e corregge le batterie guaste/anomale, fornendo tutti i dati che si possono immaginare su di esse. 4 slot, ognuno dei quali gestito da un microprocessore. Si potrà decidere se fare carica, scarica, test delle batterie approfondito o veloce. In questo modo, si avranno tutti i dati delle batterie, carica effettiva, capacità effettiva, potenza in uscita e in entrata. E in questo modo, purtroppo o per fortuna, ho scoperto che molte batterie (soprattutto al litio cinesi) non hanno la capacità dichiarata (ma nemmeno lontanamente).

    In Italia costa più del doppio, acquistatelo qui tranquillamente, in 18 giorni lavorativi lo troverete a casa e avrete finito di spendere soldi per caricabatterie che si rompono dopo un mese.

    Consigliato a tutti
    Suggestion
    Nessuno

    Jan 18,2017

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  • Nas
    Great multipurpose Tester/Refresher/Charger
    Color:Purplish Blue Size:EU Plug
    This is the best vape charger for 18650 batteries. You can charge 2 batteries at 2A or all 4 batteries at 1A each.

    I love the "mAh meter" telling me how much charge was added to each battery, which also lets me know when it's time to recycle a battery for good because it isn't holding a charge as well.

    The fan is a little loud at times (especially when charging 4 batteries at 1A each) but I like knowing the fan is removing heat from the charging circuit.

    • Product description matches product
    • Functionality is excellent and the device is easy to use
    • The build quality is sufficient
    • The charging algorithm has nursed a number of my cells back to life
    Suggestion
    • While charging, the device exhaust fan is a bit annoying, but its purpose is to spin and suck hot air.

    Jul 30,2016

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  • Everglade
    Opus BT-C3100 V2.2 / Опус BT-C3100 V2.2 EU
    Color:Purplish Blue Size:EU Plug
    "Заказал зарядное устройство 01.06.17, прибыло в Екатеринбург 22.06.17 (в пути 21 день, быстро!). Была выбрана платная доставка (метод доставки: Russia Post Registered) для нескольких заказов. Трекер отслеживался полностью. Упаковано в полиэтиленовый пакет и воздушно-пузырчатую плёнку, внутри находилось в заводской упаковке, не повреждено. За пару дней успел зарядить и восстановить все домашние аккумуляторы.
    Плюсы:
    - Зарядник позволит теперь использовать в домашних приборах аккумуляторы, что позволит на длинной дистанции экономить деньги
    - Удобен, информативен, подробная инструкция на русском языке легко находится на просторах интернета;
    - Не подтвердилась информация про шумный вентилятор, я его не слышу совершенно!
    - Провод блока питания 1.35м, мягкий, хорошо гнётся / тип розетки EU"
    Suggestion
    Нет

    Jun 26,2017

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