iVision H-AAAJ3 Replacement Battery 3.6V 700mAh Ni-MH

iVision H-AAAJ3 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 700mAh Ni-MH replacement cell for the iVision H-AAAJ3 battery used in wireless home security cameras. It restores power to cameras where the original cell has degraded through repeated charge cycles. Swap it in when the camera no longer holds a charge long enough to sustain normal operation.

• iVision wireless camera platform: These cameras use a single Ni-MH cell on a low-voltage 3.6V rail with a BMS that monitors cell voltage before enabling the processor and IR LEDs. The H-AAAJ3 form factor — 45.60 × 31.30 × 10.60mm — matches the original housing contact points exactly.
• Bench tested on actual hardware: We ran this cell through charge, idle standby, and motion-trigger load cycles. The BMS accepted the cell without handshake errors, and voltage held within expected range under combined IR LED and processor draw.
• First-install power cycle: After fitting the new cell, power cycle the camera once through the app. The firmware must register the new cell before motion-event recording logs correctly to cloud storage — skipping this step can cause missed clips even when the camera appears online.

App showing 0% or incorrect battery percentage after swap

iVision cameras use a voltage-threshold indicator, not a fuel gauge IC. When a fresh cell is installed, the firmware reads the resting voltage and maps it to a charge level — but this mapping only calibrates correctly after one full charge-to-discharge cycle. Until that cycle completes, the app may show 0%, a frozen percentage, or no reading at all. Run the camera through one full charge cycle after install and the indicator will reset to an accurate reading.

Camera going offline in the app after battery installation

Replacing the battery cuts power to the camera's Wi-Fi module, which clears the active session token stored in volatile memory. When the camera powers back up, it attempts to reconnect using a stale token and the app registers it as offline. Open the camera settings in the app, remove the device, then re-add it using the standard pairing flow. Once re-registered, the camera reconnects and resumes normal operation at its expected 3.6V operating voltage.