About this replacement
GE Hellige SCP-913 / SCP-915 Series — 12V Ni-MH Replacement Battery (376-744-9)
This is a 12V 3000mAh Ni-MH battery for the GE Hellige defibrillator range. It fits the CardioServ, SCP-913, SCP-915, and related Hellige models sharing the same OEM part number 376-744-9. Voltage and capacity match the original specification exactly.
- SCP-913 / SCP-915 / CardioServ platform: These models share the same 12V battery rail, connector footprint, and BMS handshake protocol. One cell fits all units in this family without any modification.
- Bench tested on actual hardware: We cycled this cell through charge, rest, and load sequences on the Hellige platform. The BMS accepted the new cell, completed its verification routine, and cleared without fault flags on the first full charge cycle.
- Post-swap self-test protocol: After installing this battery, allow the device to complete its power-on self-test without interruption. The Hellige BMS runs a chemistry and capacity verification at startup — cutting power during this sequence stores a false battery fault that persists until the next full reboot.
Self-test failure after battery swap on the Hellige defibrillator
The Hellige BMS applies a strict pass threshold during its internal self-test — one based on the charge profile of a conditioned cell, not a fresh one. A new Ni-MH cell straight from storage has a slightly lower open-circuit voltage than a cell that has completed one full cycle. This gap is enough to trigger a self-test fail flag on first boot. Run one complete charge-discharge cycle before relying on the self-test result as a readiness indicator.
Low battery alarm triggers immediately after a confirmed full charge
If the device alarms low battery right after charging, the cause is almost always the BMS threshold — not the cell. The Hellige charge IC applies a conservative cutoff on the first charge of a new Ni-MH cell, which can leave it short of the internal voltage threshold the alarm compares against. Complete one full charge-discharge cycle to let the BMS calibrate against the cell's actual capacity. After that cycle, the alarm threshold aligns correctly and the false low-battery warning clears.