Doro PT6MXJ Matra Look 300 Replacement Battery 3.6V 1500mAh

Doro Matra Look 300 — 3.6V Ni-MH Replacement Battery (PT6MXJ)

This is a 3.6V, 1500mAh Ni-MH replacement battery for the Doro Matra Look 300 cordless phone handset. It replaces OEM part PT6MXJ and fits directly into the handset battery compartment. Voltage, connector, and cell dimensions match the original specification.

• Matra Look 300 fit: The Matra Look 300 handset uses a 3.6V Ni-MH pack with a specific cell arrangement and connector orientation. This battery matches that layout, so the BMS in the base station reads the charge state correctly without triggering a fault.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a cordless phone test rig. The BMS accepted the battery from the first dock, and cell voltage held within the base station's acceptance window throughout the charge cycle.
• First charge on Ni-MH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before using it. Ni-MH cells in cordless phones need a slow initial charge to reach rated capacity — skipping this step cuts into what the battery can actually deliver.

Talk time shorter than expected on a new Ni-MH pack

Ni-MH cells don't ship at full capacity — they need three to five full charge and discharge cycles to reach rated output. On the Matra Look 300, the base station applies a trickle charge, so the first few cycles run at low current. By cycle four or five, the cells have been properly conditioned and talk time increases noticeably. Don't judge the battery on the first charge.

Base station shows no charge light or error after fitting new battery

Ni-MH packs lose voltage during storage, and some base stations reject a pack that arrives below their acceptance threshold — typically around 3.2V or lower. If the charge indicator doesn't light up after docking, remove the handset, wait ten seconds, and re-seat it firmly. If the base still shows no activity, the pack voltage may need a short external boost charge to bring it above the threshold before the base takes over.