About this replacement
SimpliSafe CMOB1 Outdoor Camera — 3.7V Li-ion Replacement Battery (SSCAM-BAT1)
This is a 3.7V, 5200mAh Li-ion replacement battery for the SimpliSafe CMOB1 and Extra Outdoor security camera range. It replaces OEM part numbers SSCAM-BAT1 and SSCAM-BAT11. Capacity figure comes from the product data — 19.24Wh total stored energy.
- CMOB1 and Extra Outdoor compatibility: These models share the same 3.7V single-cell architecture, connector pinout, and BMS handshake protocol — one battery covers the full outdoor camera lineup without modification.
- Bench tested on actual hardware: We cycled this cell through motion-triggered recording, IR night vision activation, and WiFi reconnection events. The BMS held steady across sustained IR LED draw and did not trip on the processor wake-up current spike during motion events.
- First-install power cycle via app: After fitting this battery, trigger a manual power cycle through the SimpliSafe app. The camera firmware must register the new cell before motion events log correctly to cloud storage — skipping this step can cause missed clips even when the camera appears online.
Why the CMOB1 goes offline in the app after a battery swap
When power is interrupted during a battery change, the camera drops its active session token with the SimpliSafe cloud. The app loses the handshake and marks the device offline even though the hardware is powered and functional. This is a firmware session issue, not a battery fault. Re-register the camera through the app's device settings to restore the connection.
App reporting 0% or incorrect battery percentage after install
The CMOB1 uses a voltage-threshold indicator — it maps resting cell voltage to a percentage band rather than using a fuel gauge IC. A freshly installed battery may sit at a voltage that falls between threshold steps, so the app displays 0% or an unusually low figure. Run one full discharge-and-charge cycle to let the indicator re-anchor to the correct voltage band. After that cycle, the percentage readout should track normally.