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TOMO T4 4 x 18650 Li-ion Battery DIY Smart Power Charger
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TOMO T4 4 x 18650 Li-ion Battery DIY Smart Power Charger

- Black

Micro USB + 8 Pin Dual Input / Output
4.87 82 Customer Reviews
    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Jan 29 - Jan 31, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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  • interest-free You can enjoy a maximum of 0 interest-free installments, and may not enjoy this offer when placing orders with other products
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T4 Descriptions

Main Features:
-DIY Power Bank and Charger
Custom capacity by 4 x 18650 li-ion battery to make your own power bank, portable external supply, provides your devices enough power. Also a battery charger for 18650 battery, a dual-use item

-Dual Inputs
8 Pin and Micro USB dual inputs, just one cable can charge the power bank, easy operation

-Dual Outputs
Dual outputs, can charge phones, pads or other small electronic devices simultaneously

-Independent Circuit
Independent battery, charging and discharging at the same time, can work together and not influence each other

-LCD Display Screen
Each battery independently clearly displays subtitle, easy to read the remaining capacity

-Reverse Polarity Protection
When it comes to the reverse polarity, the chip inside will automatically identify and cut off the power of the reversed polarity circuit, displays an empty battery level
Reversed polarity will not affect the normal operation of other circuits

Battery: 4 x 18650 li-ion battery ( not included )
Input: 5V / 1.2A
Output: 5V / 1A, 2A


Dimensions and Weight

Product weight: 0.0880 kg
Package weight: 0.1340 kg
Product Size(L x W x H): 10.00 x 8.30 x 2.40 cm / 3.94 x 3.27 x 0.94 inches
Package Size(L x W x H): 21.00 x 11.00 x 3.00 cm / 8.27 x 4.33 x 1.18 inches

Package Contents

Package Contents: 1 x Power Bank, 1 x USB Charging Cable
TOMO T4 DIY Smart Power Bank 4 x 18650 Li-ion Battery Micro USB 8 Pin Dual Input / Output Charger- Black

TOMO T4 DIY Smart Power Bank 4 x 18650 Li-ion Battery Micro USB 8 Pin Dual Input / Output Charger- Black

TOMO T4 DIY Smart Power Bank 4 x 18650 Li-ion Battery Micro USB 8 Pin Dual Input / Output Charger- Black

TOMO T4 DIY Smart Power Bank 4 x 18650 Li-ion Battery Micro USB 8 Pin Dual Input / Output Charger- Black

TOMO T4 DIY Smart Power Bank 4 x 18650 Li-ion Battery Micro USB 8 Pin Dual Input / Output Charger- Black

TOMO T4 DIY Smart Power Bank 4 x 18650 Li-ion Battery Micro USB 8 Pin Dual Input / Output Charger- Black

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Customer Reviews

4.87 out of 5
  • 75
  • 5
  • 1
  • 0
  • 1
See all 82 reviews Write a Review
  • Sergio
    Yes (0) Color: White
    Tomo T4
    Doppio utilizzo, carica batterie e Powerbank. Possibilità di poter scegliere le batterie 18650, e quindi la capacità di mAh, ma anche la qualità delle batteri atterie stesse in base al marchio. Spesso molti powerbank sono dotati di batterie scadenti. Il Tomo t4 funziona anche inserendo una sola batteria.
    Possibilità di poter sostituire rapidamente le batterie scariche con altre cariche se si dispongono di più di 4 batterie, una comodità all'occorrenza per chi si trova a lungo all'aperto e ha necessità di ricaricare smartphone etc. Tutto sommato compatto come dimensioni, alcuni powerbank con stesse capacità di mAh sono anche più grossi. Display simpatico che indica il livello di carica delle batterie, e l'amperaggio in uscita in fase di carica di un device.
    Forse un pò il peso inserendo tutte e 4 le batterie negli slot, ma è normale.
    Il 90% del peso complessivo dipende propio dalle batterie.

    Apr 06,2018

  • Tarık
    Yes (0) Color: White
    Güzel, güvenli ve kaliteli ürün
    Uzun arayışlarım sonucunda biraz daha fazla para vererek kaliteli ve güvenli olan bu markayı seçtim. Li-ion piller tehlikeli olduğu için şarj aletinin kaliteli ve güvenli olması bence önemli. 3-5 dolar daha vererek daha güvenli olanı seçmek mantıklı geldi.
    Diğer benzeri ürünleri incelediğimde malzeme kalitesinin kötü olduğunu ve kapaklarının çabuk kırıldığını gördüm. Bu ürünün malzeme kalitesi de güzel. Normal kullanımda, zorlamazsanız bir parçasının kırılacağını sanmıyorum.
    Diğer artı özellikleri için açıklamada yazanlar doğru, üzerine bir şey eklememe gerek yok. Memnunum.
    Gearbest' in bir eksiği yok, fakat TOMO' ya resmi web sitesinden mesaj atarak modellerin farkını sordum. (T4, E4, S4...v.b.) İki defa mesaj atmama rağmen yanıt vermediler. Hizmet kalitesini artırmaları gerekir.
    Web sitelerinde de modellerin farkı yazmıyor.
    Ayrıca ürünle birlikte gelen USB kablosunda veri aktarım özelliği yok, sadece şarj etme özelliği var. Veri aktarabilen kablo olsa daha iyi olurdu.
    Teşekkürler Gearbest.

    Jul 04,2018

  • Poye
    Yes (0) Color: Black
    Vraiment pas cher / Very low cost
    J'aime bien l'affichage de chargement des batteries qui ne sont pas fournies. J'ai ajouté des batteries de 9600 Ah. Tout va bien pour le moment.
    Pour insérer les Batteries, il suffit de faire coulisser la coque supérieure. Rien e plus facile.

    I like the display of charging batteries that are not provided. I added 9600 Ah batteries. All is well for the moment.
    To insert the Batteries, simply slide the upper shell. Nothing easier.
    Batteries non fournies mais cela est spécifié dans l'annonce du produit

    Batteries not supplied but this is specified in product announcement

    Jun 21,2017

  • Alexandru
    Yes (0) Color: Black
    TOMO T4 DIY Smart Power Bank
    The device looks very nice, it's well built, comes in a box.Normal price,simple and easy to use. the product works well.The individual battery status is for him. when charging, it looks like it charges everything together, even if it's already fully charged. good for 4 batteries. great product.

    Oct 30,2017

  • Piotr
    Yes (0) Color: Black
    This power bank is small and good looking. Comes with a very nice package. The price is very good for such an item. You can put inside up to 4 18650 batteries, so the real capacity could be over 12 000mAh. This 18650 batteries could be easy replaced, could be charged inside too. This TOMO power bank has display showing capacity level for each battery.
    I put inside 4 batteries of about 2000mA each and I charged my mobile from 20% to 100%. My phone acu is about 4000 mAh. I think I could easily charge it from 0% twice. The display show voltage and each batterry level. The best thing is that I can put new 18650 battery when those inside is discharged.

    Oct 12,2017

FAQ for T4

Customer Questions

  • All(1)
  • Product Information(1)
  • Stock Status
  • Payment
  • About Shipping
  • Others

Hello this product work with this

By Alejandro Sep-20/2017 15:48:08

Hello Alejandro ,I suggest that you can get more information on our website.More information refer to information below:Parameters:Battery: 4 x 18650 li-ion battery ( not included )Input: 5V / 1.2AOutput: 5V / 1A, 2A

1 Questions & Answers View All

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There are two key factors which will affect the time you receive your items.

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7 days to other European countries.
USA Warehouse: Generally, 3-7 days to a USA address.
ES Warehouse: Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note: This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control. Generally speaking, we offer free shipping for T4 to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

Payment accepts PayPal,Credit Cards,Wire Transfer,Westem Union, YandexMoney,Webmoney,Boleto,OXXO and BKM as secure payment methods.

The most convenient payment method in the world.
Wire transfer
For orders which exceed $1,500,please contact us at
Note: please email us the order number,the amount transferred along with currency type,and the exact date of the wire transfer.
Western Union
Please contact us at for details.
Note: please email us the following information after you have paid via Westem Union:
· Control Number(10 digits)
· The exact amount sent along with the currency
· Name of sender.
· Address of sender
YandexMoney、 Webmoney
With YandexMoney and Webmoney, it is convenient and safe for you to pay via credit card、wallet or cash
For Brazil customers, we accept Boleto: you only need to fill in the payment information, remember your Boleto Voucher information and pay it within 3 days at any Boleto stores.
For Mexico customers, we accept OXXO: you can choose OXXO payment on our website, and then remember your OXXO Voucher information and pay it within 3 days at any OXXO stores.

Do you want to bulk buy T4 ? Please submit your wholesale T4 inquiry below. Please note we usually don’t offer free shipping on wholesale T4 orders, but the wholesale price will be a big bargain.

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