Center Power / CP Lithium Battery

Bluetooth

The battery has a built-in BMS that broadcasts over Bluetooth Low Energy. To use it:

1. Install a compatible BMS app on your phone. Center Power packs typically use the Xiaoxiang BMS app (often listed as "JBD BMS" or "Smart BMS"), available on iOS and Android.
2. Turn on Bluetooth and Location on your phone (Android requires Location for BLE scanning).
3. Open the app and scan. The battery shows up as something like xiaoxiang BMS or with the pack's serial number.
4. Connect. No pairing PIN is needed — first device in wins.

Once connected you can read state of charge, pack voltage, per-cell voltages, charge/discharge current, temperature, cycle count, and any active BMS protections (over-voltage, under-voltage, over-temp, short-circuit). Only one phone can be connected at a time.

If the battery does not appear: make sure it is not fully asleep (apply a small load or briefly connect a charger to wake it), stand within a few meters, and close any other BMS app that may already be holding the connection.

Heat function

LiFePO4 cells must not be charged below 0 °C / 32 °F— doing so plates lithium on the anode and permanently damages the pack. The Heat function exists to prevent this.

It is automatic. When the internal temperature sensor reads below roughly 5 °C (41 °F) and the BMS detects an incoming charge current, it diverts that current to heating pads bonded to the cells instead of charging them. Once the cells warm above about 5 °C, the BMS releases the current to normal charging.

• You don't need to push a button. Heat will not run from the battery's own stored energy — it only activates when a charger, alternator, or solar controller is connected and producing current.
• Pre-heating can take 30 minutes to a few hours depending on how cold it is and how much current your charger supplies. During this time the state of charge will not go up. This is normal.
• Discharge below 0 °C is generally allowed (down to roughly −20 °C) — only charging is gated.
• If you see a "low temp" or "charging protected" alert in the Bluetooth app while plugged in to a charger, the heater is doing its job. Leave it connected.