Philips Medical System 100 AS11013 Replacement Battery 6V 7000mAh

Philips Medical System 100 Series — 6V Sealed Lead Acid Replacement Battery (AS11013)

This is a 6V 7000mAh sealed lead acid battery for Philips Medical System 100, 200, 300I, M1770A, and related monitoring and diagnostic equipment. It replaces OEM part numbers AS11013, B11013, M2460A, and OM11013. Physical dimensions are 151.53 x 101.61 x 34.85mm — confirm fitment against your existing cell before installation.

• Medical System 100–M1770A platform fit: These models share a common 6V SLA power rail, connector format, and BMS handshake profile. A single cell specification covers the full range, which is why multiple OEM part numbers cross-reference to the same physical unit.
• Bench tested on actual hardware: We ran this cell through charge and load cycles on compatible equipment. The BMS accepted the cell without fault codes on the first full charge, and the protection circuit responded correctly to load draw consistent with active monitoring use.
• Post-installation self-test requirement: After fitting this battery, allow the device to complete its power-on self-test without interruption. Medical System devices run BMS verification at startup — cutting power mid-sequence triggers a false battery fault that persists until the next full reboot.

Why sealed lead acid cells need a full cycle before passing Medical System self-test

SLA cells ship in a partial state of charge and have not yet gone through a conditioning cycle. The Medical System BMS applies a voltage threshold check during self-test that a new, unconditioned cell may not pass on the first attempt. The BMS is calibrated against OEM cell behaviour after at least one complete charge-discharge cycle. Run one full charge before expecting a clean self-test result — this is chemistry behaviour, not a faulty cell.

Device alarming low battery immediately after a confirmed full charge

This happens when the charger completes its cycle but the BMS has not yet learned the new cell's internal resistance profile. The device reads terminal voltage under load, and a fresh SLA cell sags more on the first few discharge cycles than a settled one — the alarm trips at the sag, not the resting voltage. The fix is to complete one full charge-discharge cycle and recharge to 100% before returning the device to clinical use. After conditioning, resting voltage should hold above 6.3V with the device active.