This PCB protects Lithium Ion batteries configured in 2S from over-charging and over-discharging.
It also protects the cells from over-current loads, limiting the maximum output to 3A.
It also features short-circuit protection, which protects the batteries from damage in the event of a short on the output wires.
This module is NOT a charging circuit! An adequate charger must be used to properly charge your batteries.
Parameter |
Min |
Typ |
Max |
Unit |
Charging Voltage |
- |
7.4 |
8 |
V |
Charging Current |
- |
- |
3 |
A |
Discharge Current |
- |
- |
3 |
A |
Overcharge detection per cell |
4.32 |
4.35 |
4.38 |
V |
Overdischarge detection per cell |
- |
2.9 |
- |
V |
IMPORTANT
In order to activate the protection module output, a charge voltage must be briefly applied to the P+/P- terminals after the batteries are connected to it. This must be repeated if the batteries are disconnected from the protection PCB.

