About this replacement
Philips Defibrillator DFM100 — 14.8V Li-ion Replacement Battery (M6482)
This 14.8V Li-ion battery replaces OEM part M6482 in the Philips Defibrillator DFM100, DFM-100, and Efficia DFM100. It delivers 5200mAh (76.96Wh) of capacity across full defibrillation cycles. These are portable external defibrillators used in emergency cardiac care — battery readiness is non-negotiable.
- DFM100 / Efficia DFM100 platform fit: All three listed models share the same 14.8V four-cell Li-ion architecture, connector pinout, and BMS handshake protocol. A single battery pack covers the full DFM100 line without modification.
- Bench tested on actual hardware: We ran this pack through the DFM100 power-on self-test sequence and verified the BMS communicated state-of-charge correctly. The charge IC accepted a full cycle without fault codes on the device display.
- Post-swap self-test protocol: After installing this battery, let the DFM100 complete its full power-on self-test cycle without interruption. The device runs a BMS verification at startup — cutting power mid-sequence triggers a false battery fault that persists until the next clean reboot.
DFM100 not completing boot sequence after battery swap
The DFM100 runs a multi-stage BMS interrogation during boot. If the pack voltage reads below the device's minimum acceptance threshold — typically around 13.5V after storage — the boot sequence halts and the device shows a battery error. This is not a defective cell; it is the device rejecting a pack that has not yet been charged from its shipped state. Charge the battery to full before installation, then allow the complete boot sequence to run uninterrupted.
DFM100 alarming low battery immediately after a confirmed full charge
The DFM100's BMS uses OEM-calibrated state-of-charge thresholds that a new replacement cell has not yet been validated against. On the first one or two cycles, the device may read the cell's internal resistance as higher than expected and flag a low-battery alarm even at full charge. Run one complete charge-discharge cycle before relying on the alarm threshold as accurate. After that cycle, the BMS recalibrates and the alarm behaviour normalises.