ResMed Elisee 150 Replacement Battery 14.4V 6600mAh SE301116

ResMed Elisee 150 — 14.4V Li-ion Replacement Battery (SE301116)

This 14.4V 6600mAh lithium-ion battery replaces the internal power pack in the ResMed Elisee 150 portable ventilator and Respirador Saime. It matches OEM part numbers SE301116, U0126274, and 43.888.8482. Use it to maintain uninterrupted ventilation therapy when AC power is unavailable — during transport, home care, or emergency situations.

• Elisee 150 and Respirador Saime compatibility: Both units share the same 14.4V battery rail, BMS handshake protocol, and physical connector — one cell fits both without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the Elisee 150 platform. The BMS completed communication handshake correctly, and the charge IC accepted the cell without triggering a fault condition.
• Post-installation self-test: After fitting the battery, allow the Elisee 150 to complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup — cutting power during this window writes a false battery fault that persists until the next clean reboot.

Why the Elisee 150 flags a battery fault after a correct installation

The Elisee 150 runs a BMS learn cycle when it first sees a new cell. Until that cycle completes, the device treats the cell as unverified and may raise a battery fault even when the pack is fully charged. This is not a defective battery — it is the device's authentication sequence running as expected. One full charge-to-discharge-to-charge cycle clears the learned state and aligns the BMS to the new cell's actual capacity. Do not present the device for clinical use until that first cycle is complete.

Charge indicator stops below 100% on first charge

On a new cell, the Elisee 150's charge IC applies a conservative current limit during the first charge pass. The indicator may stall between 90% and 98% for an extended period before completing — this is the IC running a cautious top-off on an unconditioned cell, not a fault. Do not disconnect the charger early. Let the charge cycle terminate naturally; the indicator will reach 100% once the IC confirms the cell voltage has stabilised at 16.8V.