About this replacement
Ezviz CS-DP1C Series — 3.8V Li-Polymer Replacement Battery (AHB765965P)
This is a 3.8V 4600mAh Li-Polymer replacement battery for the Ezviz CS-DP1C-4A1WPFBSR and CS-DP1C wireless outdoor security cameras. It replaces part number AHB765965P and restores the camera's original cell capacity. Rated at 17.48Wh, it matches the voltage and physical footprint of the factory cell.
- CS-DP1C and CS-DP1C-4A1WPFBSR compatibility: Both models run the same 3.8V power rail and use the same AHB765965P cell with identical connector and BMS handshake requirements — the same replacement battery fits both variants without modification.
- Bench tested on actual hardware: We cycled this battery through charge and discharge on a CS-DP1C unit and confirmed the BMS accepted the cell, voltage reported correctly through the Ezviz app, and motion recording logged to cloud storage without interruption.
- First-install power cycle: After fitting the new cell, power cycle the camera once through the Ezviz app. The firmware must register the new battery before motion event logging initialises correctly — skipping this step can cause missed recordings even when the cell reads charged.
Why the CS-DP1C goes offline in the app after a battery swap
Replacing the battery cuts power long enough for the camera to lose its active session token with the Ezviz cloud. When power returns, the firmware attempts to reconnect using a stale token and the app shows the device as offline. This is not a battery fault — it is a re-authentication step. Open the Ezviz app, navigate to the device settings, and trigger a manual restart to force a fresh token handshake. The camera typically comes back online within 60 seconds of that restart.
App reporting 0% or wrong battery percentage after install
The CS-DP1C uses a voltage-threshold indicator, not a fuel gauge IC, so the percentage display is calculated from resting cell voltage at fixed reference points. A new cell installed at partial charge will read incorrectly until the camera completes one full charge cycle. Charge the battery to 100% via the app indicator, then allow it to discharge naturally through normal operation. After that single cycle the threshold calibration resets and the percentage display tracks correctly.