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4 Application Description
4.1 Parallel Connection Application
The battery packs support parallel connection, and synchronously increases the
backup time or backup power.
Confirm the consistency between the battery packs, check the SOC and voltage
and turn off the batteries before connecting them in parallel.
Multiple battery packs of parallel connection need to use RS485/CAN to
communicate, pay attention to the DIP switch settings.
4.2 Low-temperature Application
• Low-temperature charging
The battery pack does not support direct charging of the battery below 0°C.
When the minimum temperature of the battery is below 0°C, the BMS will cut-off
the charging circuit and cannot be charged.
• Low-temperature discharging
The battery pack does not support discharge below -20°C. When the
minimum temperature of battery is below -20°C, the BMS will cut-off the
discharge circuit and cannot discharge.
4.3 Low Battery-capacity Storage (SOC≤5%)
After the battery pack is power off, there will be BMS static power
consumption and self-discharge loss. In actual scenarios, it is necessary to avoid
low-battery-power state （ SOC≤5% ） storage. If it is unavoidable, the longest
storage period is 30 days@25°C, 15 days@45°C. The battery needs to be recharged
in time after storage, otherwise the battery may be damaged due to over-discharge,
and the entire battery pack needs to be replaced.
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