PatrolEyes PE-MAX Compatible Battery 3.8V 2750mAh Li-Polymer

PatrolEyes PE-MAX / PE-EDGE — 3.8V Li-Polymer Replacement Battery (PE-MAX-RB)

This is a 3.8V, 2750mAh lithium-polymer battery that replaces the OEM pack in the PatrolEyes PE-MAX and PE-EDGE body cameras. It fits the same cell bay and connector as the factory battery. Capacity figures come from the product data — 10.45Wh total energy.

• PE-MAX and PE-EDGE compatibility: Both models share the same 3.8V cell bay, connector pinout, and BMS handshake protocol. One battery pack services either camera without modification.
• Bench tested on actual hardware: We ran this pack through a simulated recording load — continuous video plus active WiFi upload. The BMS held voltage without tripping under combined draw, and cell temperature stayed within spec across the session.
• Shift-start check: After fitting this battery, power the camera on before your shift begins. The PE-MAX runs a self-check on startup that confirms the battery is accepted and the camera is in a ready-to-record state. Skip this step and you may not catch a firmware handshake failure until it matters.

Recording cuts out mid-incident on the PE-MAX

The PE-MAX draws from both the video processor and the wireless radio simultaneously during recording. When both subsystems spike at the same time — such as when WiFi upload kicks in mid-clip — the combined current draw can trigger the BMS protection circuit. The BMS reads this as an overload and cuts output to protect the cell. To recover, power the camera off fully, wait ten seconds, and power it back on. If the cutouts repeat, check whether WiFi upload is set to run during recording or only when docked.

Battery indicator showing low after a short recording session

A new lithium-polymer cell sometimes reports inaccurate state-of-charge on the first one or two cycles because the camera's fuel gauge hasn't calibrated to the new pack. This shows up as a low indicator icon well before the battery is actually depleted. Run the battery down to the camera's automatic shutdown point, then charge it fully to 4.2V — one full cycle usually re-anchors the gauge to the actual cell capacity. If the indicator still reads low after two full cycles, the issue is in the camera's gauge circuit, not the battery.