Air Liquide T60 Respirator Replacement Battery 22.2V 2600mAh

Air Liquide T60 Respirator — 22.2V Li-ion Replacement Battery (120008-O)

This 22.2V, 2600mAh (57.72Wh) lithium-ion battery fits the Air Liquide T60 powered air-purifying respirator (PAPR). It powers the motorized blower unit that drives filtered air through the hood or mask assembly. Cross-references: 120008-O, KY692800, T60-Y-O, YR115100.

• T60 PAPR blower compatibility: The T60 blower motor runs on a 22.2V six-cell Li-ion pack with a specific BMS handshake. This pack matches that voltage rail and connector configuration, so the BMS recognises the cell chemistry and permits normal motor start-up without triggering a protection fault.
• Bench tested on actual hardware: We ran this pack through the T60 power-on sequence and monitored BMS communication during blower spin-up. The battery cleared the self-test handshake and held voltage stable under the full rated blower load without dropping into protection cutoff.
• First-use power-on sequence: After installing this battery, let the T60 complete its full power-on self-test cycle without interruption. The device BMS runs a verification routine at startup — cutting power during this window stores a false battery fault that persists until the next clean reboot.

T60 Not Completing Boot Sequence on a New Battery

The T60 runs a BMS verification check immediately after power-on. A new cell that has not yet completed one full charge-discharge cycle may sit just below the OEM threshold the device expects to see during this check, causing the boot sequence to stall or abort. This is a chemistry initialisation issue, not a defective pack. Charge the battery fully on the supplied charger, then run one complete discharge cycle through normal PAPR use before treating it as clinically ready.

Charge Indicator Stuck Below 100% on First Charge

On the first charge cycle, the T60 charge IC applies a conservative current limit to an unrecognised cell — this is intentional protection behaviour, not a charger fault. The pack typically reads 95–98% on the first termination before the charge IC recalibrates its end-of-charge threshold. Run a full discharge, then a second full charge cycle. After that second cycle the indicator should reach 100% and hold, confirming the charge IC has calibrated to the new cell capacity.