Description

6S 15A Lithium Battery BMS Protection Board

This is a battery management and protection board for a lithium battery pack made from six cells connected in series. Although the source calls it a charger, a BMS protection board is not a standalone charger; use a charger matched to the pack chemistry and configuration.

The source lists protection against overtemperature, short circuit, overcharge, over-discharge and battery-output overcurrent. It gives a charging voltage of 25.5V and describes 15A maximum operation, with natural cooling at 10A and an added heatsink at 15A. It also states a 30A maximum instantaneous current. Verify these ratings and cooling requirements against the exact board documentation and installation conditions.

Specifications stated by the source

Pack configuration: 6S, six cells in series
Charging voltage: 25.5V
Overcharge detection: 4.28 ± 0.05V
Overcharge release: 4.08 ± 0.05V
Over-discharge detection: 2.55 ± 0.08V
Over-discharge release: 2.9 ± 0.1V
Overcurrent threshold: 20–30A
Operating current: up to 15A (source-stated); 10A with natural cooling, 15A with a heatsink; instantaneous maximum stated as 30A
Operating temperature: -40 to 85°C
Dimensions: 50 × 30 × 2mm

Source specification discrepancy: the nominal-voltage examples show incorrect cell counts: 21.6V is paired with 3.6V × 5, 22.2V with 3.7V × 4, and 25.2V with 4.2V × 4. A six-cell series pack uses six cells in each calculation. The stated 25.5V charging voltage also differs from the listed 25.2V example. Confirm the intended chemistry, cell count and voltage values before use.