BMS 2S 10A 7.4V HX-2S-JH20 18650 Lithium Battery Protection Board 8.4V Balanced Function Overcharged Protection Good

Product parameters:
Model: HX-2S-JH20 
Overcharge voltage range: 4.25±0.05v
Over-discharge voltage range: 3.6v±0.1v

Charging voltage: 8.4V-9V
Upper limit working current: 10A 

Upper limit instantaneous current: 20A 
Quiescent current: less than 10uA 
effective life: more than 50,000 hours
Internal resistance: less than 300mΩ

Working temperature: -40~+50°C
Storage condition: -40~+80°C

Protections:
Short circuit protection
Overcharge protection
Over-discharge protection
Size: Approx. 48 x 24 x 4mm

B+ : Battery Positive 
B- : Battery Negative 
P+ : Charger/Load Positive 
P- : Charger/Load Negative 
BM : First cell (counted from B-) Positive or where is first and second cell connection, middle connection

Features:
1. This protection board is for Lithium Polymer and Lithium Ion batteries only, it cannot be used for Lithium Iron Phosphate batteries.
2. Please ensure that the batteries are identical, preferably from the same batch and have the same state of charge, capacity and internal resistance.
3. This module balances both charging and discharging the batteries.
4. When the batteries are first connected, if there is no output, a charging voltage needs to be briefly applied to wake the board from sleep mode.