JX-887Y Power Bank Battery Management System Module


This is a basic Battery Management System (BMS) for creating your own 5V power bank.


5 in stock

SKU: PWR-BMS-JX887A Category: Tags: , , , , ,


This is a basic BMS system for building your own lithium-ion based power bank. It consists of the basic functions that you’ll need for a powerbank, such as auto shutdown when not in use, regulation during charging and discharging, power level indication, etc.


  • 4-level LED indicator for showing energy level of the battery
  • Auto shut-down when not in use
  • Input charging power : 5V
  • Output power : 5V1A / 5V2A
  • Micro USB input
  • Dual USB output
  • The type of rechargeable batteries can be used with this module are 18650, mobile phone battery, tablet battery, 3.7 – 4.2V lithium ion battery. The battery must be only in parallel arrangement.
  • The type of batteries CANNOT be used with this module are dry cell, seal-lead acid batteries, 1.2V rechargeable battery, Ni-MH battery, 3.2V lithium ferrite battery.
  • The battery must be in between 3.2 – 4.2V to operate normally.
  • Please connect positive terminal of battery to B+ pin and negative terminal of battery to B- pin. This module does not have reverse polarity protection, connecting the battery in reverse way will damage the module.
  • Avoid combining new and old batteries in a pack, it will cause irregular charging and discharging.
  • Dimensions : 69 x 32 x 8 mm

Additional information

Weight 20 g
Dimensions 69 × 32 × 8 mm


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