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Frequently Asked Questions
How do I know what material OR type my battery is?
Please check the battery body. If the normal voltage shows 3.2V, it is LiFePo4. If it shows 3.6V or 3.7V, it is a Li-ion or Li-polymer battery. You can also consult the battery manufacturer for confirmation.
Is this BMS suitable for my battery?
It depends on two points: 1. The number of series in your battery pack (the BMS must match). 2. The battery material (LiFePo4 has different electric parameters). Please specify if you need BMS for LiFePo4.
What is the difference between Common port and Separate port?
Common port means charge and discharge cathodes share the same point (P-), with identical current ratings. Separate port uses different points for charging (C-) and discharging (P-), allowing for different current capacities.
What is the balance function and do we need it?
The balance function ensures all cells reach a uniform voltage by discharging overcharged cells through a resistance (approx. 35mA). This process helps maintain battery health and balance during the charging cycle.
Is there a relationship between battery capacity and BMS current?
There is no direct link. BMS current selection depends on the continuous current required by your engine/controller, not the battery capacity (Ah). For powerful engines, choose a higher current BMS.
What type of charger should I choose for my Lithium battery?
Use a specific lithium charger. For LiFePo4: Strings x 3.6V. For Li-ion: Strings x 4.2V. Do not use lead-acid battery chargers as they lack the necessary voltage protection for BMS.
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