Philips PageWriter 10 7.2V Ni-MH Replacement Battery 110395

Philips PageWriter 10 / 10i — 7.2V Ni-MH Replacement Battery (110395 / M2662A)

This is a 7.2V 2700mAh Ni-MH replacement battery for the Philips PageWriter 10 and PageWriter 10i portable ECG machines. It fits units identified by OEM part numbers 110395, 6024, M2662A, and M3941A. Voltage and capacity match the original specification for portable cardiac diagnostic use.

• PageWriter 10 and 10i compatibility: Both models run on the same 7.2V battery rail with an identical physical connector and matching BMS handshake protocol. The cell count, voltage step profile, and pack geometry are the same across both variants, so one battery covers both units.
• Bench tested on actual hardware: We cycled this pack through charge and discharge under the PageWriter 10's load profile. The BMS accepted the new cell without error flags, completed its verification routine, and held steady voltage through repeated ECG acquisition sequences.
• Post-swap startup protocol: After fitting this battery, let the PageWriter complete its full power-on self-test without interruption. The device runs a BMS verification cycle at startup — cutting power during this sequence triggers a false battery fault that stays latched until the next clean reboot.

Why the PageWriter 10 flags a battery fault on a brand-new cell

The PageWriter 10's charge IC applies conservative acceptance thresholds calibrated to an OEM cell with a known charge history. A new Ni-MH cell hasn't completed its first full charge-discharge cycle, so its internal resistance sits slightly above the threshold the BMS expects at startup. This can trip a fault flag on first boot even when the pack is fully charged. One full charge-discharge cycle re-establishes the cell's electrochemical baseline and clears this condition without any software intervention.

Charge indicator stalls below 100% on the first charge

On first charge, the PageWriter 10's charge IC reads incoming voltage response from a cell with no prior cycling history and caps the charge current early as a protective measure. The pack is not defective — the charge IC is applying a conservative limit it will relax after the first full cycle. Let the device complete the charge naturally, then run the battery down fully through normal ECG use before recharging. After that first complete cycle, the charge indicator will reach 100% and the charge IC will operate at full current on all subsequent charges.