About this replacement
Imilab M1 — 3.7V Li-Polymer Replacement Battery (CM018)
This is a 3.7V, 5000mAh Li-Polymer replacement battery for the Imilab M1 wireless indoor security camera. It slots into the M1 body using OEM part number CM018. When the original cell degrades and the camera starts missing motion events or dropping offline, this is the direct swap.
- M1 camera platform: The Imilab M1 runs a single-cell 3.7V Li-Polymer pack. The BMS on this camera handles the combined current load from the Wi-Fi radio, IR LEDs, and image processor — all three spike simultaneously on a motion trigger. The replacement cell matches that voltage rail and connector exactly.
- Bench tested on actual hardware: We cycled this cell through repeated motion-trigger events and monitored BMS behaviour under combined IR and Wi-Fi load. The cell held voltage through sustained draw without tripping cutoff during clip recording.
- First-install power cycle: After fitting this battery, force a power cycle through the Imilab app before leaving the camera in place. The firmware must register the new cell to log motion events correctly to cloud storage — skipping this step causes trigger dropouts even though the camera appears live.
Why the M1 stops recording mid-clip on a weak Wi-Fi signal
When the M1 sits at the edge of Wi-Fi range, the radio repeatedly drops and reconnects. Each reconnect draws a short current spike as the radio re-authenticates. On a degraded original cell, that spike pushes the pack voltage below the BMS cutoff threshold, ending the clip. A fresh 5000mAh cell holds a higher resting voltage, keeping headroom above that cutoff during reconnect surges. If mid-clip stops persist after swapping the battery, move the camera closer to the router or add a Wi-Fi extender to reduce reconnect frequency.
App showing 0% or a frozen percentage after battery swap
The Imilab M1 uses a voltage-threshold indicator — not a fuel-gauge IC — to estimate charge level. After installing a new cell, the camera firmware reads the resting voltage and maps it to a percentage using stored thresholds from the previous cycle history. That mapping is stale immediately after a swap, so the app can display 0% or lock on an incorrect figure. Run one full charge to 100%, then allow the camera to discharge normally. After that single full cycle, the voltage-to-percentage mapping resets and the app reports correctly.