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The 8 cell BMS measures 120mm x 94mm x 10mm and is supplied in a polycarbonate casing with spacers which protects the BMS from damage and allows adequate ventilation. The casing measures 133mm x 108mm x 25mm. The 7 pin balancing cables which come with the BMS measure 400mm in length. We also supply M3 bolts, nuts and ring terminals for attaching cables to BMS.
We currently use this BMS with our 24V LifePO4 battery packs and find they perform well.
Why use a BMS with your battery cells?
The battery management system is designed to protect the cells which make up a battery pack and prolong the life of the battery. The BMS will monitor key operational parameters during the charging & discharging process such as voltages (upper & lower limits) and currents (maximum current limits) and will disconnect the battery from the load or charger should any of the set parameters be exceeded.
The BMS will also ensure that individual cells are balanced evenly, which is important due to the small differences between cells due to production tolerances.
We recommend that all LifePO4 cells are fully charged first with a single cell charger before assembling the battery pack & connecting the BMS.
Important - Due to the fact that we can't control how the BMS is installed this product does NOT come with a warranty. Please check the installation diagram carefully BEFORE attempting to connect the BMS to the battery pack. If you have no electrical experience we would recommend you consider purchasing a complete battery pack.
1) Voltage
Charging Voltage
Balance voltage for single cell
DC:28.8V 3.6V/Cell
3.60±0.025V
2) Current
Balance current for single cell
Current consumption for single cell
Maximum continuous discharge current
Maximum continuous charging current
92±5mA
≥20uA
30A
≥5A
3) Over Charge Protection
Over charge detection voltage
Over charge detection delay time
Over charge release voltage
3.90±0.025V
0.5S-2S
3.80±0.025V
Over discharge detection voltage
Over discharge detection delay time
Over discharge release voltage
2.00±0.062V
10ms-300ms
2.0±0.062V
Over current detection voltage
Over current detection current
Detection delay time
Release condition
0.062V
110±20A
5ms-20ms
Cut load
Detection condition
Exterior short circuit
200-500us
≥20mΩ
Operating temperature range
Storage temperature range
-40~+85°C
-40~+125°C
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