TOMO S4 4 x 18650 Li-ion Battery DIY Smart Power Charger

- BLACK 213017601

Type-C + Micro USB + 8 Pin Input Dual Output
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  • 5 Star 79%
  • 4 Star 18%
  • 3 Star 2%
  • 2 Star 0%
  • 1 Star 1%

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Main Features:

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

-Three Inputs
Type-C, 8 Pin and Micro USB 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 output voltage and current, 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 3.7V li-ion battery ( not included )
3-input ports: 5V 2A ( max )
Output: 5V / 1A, 2A

1. When input and output at the same time, it will automatically charge the device first, then charge the battery.
2. Press less than 1 second to turn on / turn off the backlight, press 2 seconds to turn on / off the machine.


Dimensions and Weight

Product weight: 0.0860 kg
Package weight: 0.1510 kg
Product Size(L x W x H): 10.00 x 8.30 x 2.60 cm / 3.94 x 3.27 x 1.02 inches
Package Size(L x W x H): 18.80 x 11.00 x 3.10 cm / 7.4 x 4.33 x 1.22 inches

Package Contents

Package Contents: 1 x Charger, 1 x USB Charging Cable, 1 x English User Manual

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Customer Reviews

4.78 out of 5
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  • carpath578
    very good product!
    this Tomo S4 power bank/18650 charger is very practical, made with good materials and also with a very good finish! the plastic is thick and solid, springs & contacts are very high quality, this S4 is built to last...the display is very cool & usefull, this power bank is well sophisticated but very simple to use...the supplied cable is a bit short BUT really thick & good cable, no problem with 2amp, and it's by far the most important thing.
    Thank you Gearbest!
    absolutely none...

    Jun 21,2017

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  • Zoxir
    unique power bank/18650 charger
    Item as described, shows output voltage and current very precisely, and works with solo one or more (up to four)18650 batteries. easy to operate and universally designed, supports ligtning, micro usb, and usb-c charging cables. Output is via 2 USB ports, one has output of 2A max, other one 1A. LCD is back-lit, but light can be turned off tapping the power button once. Build quality is fine
    a bit pricey

    Mar 17,2018

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  • SimplyUnboxIt
    TOMO S4 - Very good power bank
    This power bank is compact and quality feels good. The lid closes very good and tight, so it won´t come off accidentally. The display is very informative, and shows all the information needed. Comes with a short cable, but it´s not really a problem since most of us have multiple cables laying around.

    Jul 23,2017

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  • artusi francesco
    ottimo power bank 18650
    Power Bank che usa 4 batterie 18650 2 uscite usb per caricare dispositivi, 3 ingressi per ricaricare le batterie 18650 nella power bank gli ingressi sono 1 lightning 1 usb-c e 1 micro-usb .
    Funziona veramente bene lo stò usando con 4 batterie 18650 da 3000mah per un totale di 12000mah e si può utilizzare per caricare qualsiasi dispositivo, consiglio l' acquisto.

    Jan 08,2018

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  • ekalle
    Good power bank
    - Charging batteries individually, and that is a very important pro.
    - 4 x LG HG2 gives you 12000mah at 3,7V
    - Very clear and easy to read display
    - Can charge from MicroUSB, USBtypeC and Apple
    - The lid was a little bit hard to open the first time. Nothing about "How to open" in manual.
    - Manual is not so good.

    Oct 05,2017

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  • Luca Molara
    Si ricarica con micro usb, usb type C, e connettore iphone.
    Ottimi materiali di costruzione e un utile display per controllare lo stato delle batterie.

    Jul 15,2017

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  • heb nog niet getest maar zit er goed uit
    moet nog testen , maar wat ik zie ben ik blij mee, moet op de batterijen wachten, zelfde tijd besteld maar die zijn nog niet geleverd.
    levering niet compleet,
    nog batterijen

    Jun 16,2018

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  • good product
    Very good quality but....
    The only issue with this product is that is consuming the batteries when is not used. Other than that is OK.
    Consuming the batteries in standby

    Feb 12,2018

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  • Boris
    You can have 1-4 batteries.. multiple charging ports.
    Does not fit protected cells over 70mm. Or very tight fit for 69-69,50mm.

    Nov 23,2017

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