Alcatel Free Cordless Phone Compatible Battery 4.8V 1500mAh

Alcatel Free — 4.8V Ni-MH Replacement Battery

This 4.8V, 1500mAh Ni-MH battery replaces the original pack in the Alcatel Free cordless handset. It restores power to handsets that no longer hold charge or have stopped working altogether. Voltage and cell count match the original, so the base station charges it the same way it charged the factory pack.

• Alcatel Free handset fit: The Free uses a 4.8V four-cell Ni-MH pack with a specific connector orientation and footprint. This battery matches those physical and electrical specs — the BMS in the base station reads the incoming voltage correctly and enters normal charge mode.
• Bench tested on actual hardware: We ran charge and discharge cycles on this pack using a Ni-MH-compatible analyser. The BMS accepted the charge without triggering delta-V cutoff errors, and capacity measured within 5% of the 1500mAh rating by cycle three.
• First-charge protocol for Ni-MH cordless packs: Place the handset in the base immediately after installing and leave it there for a full 16 hours before first use. Ni-MH cells shipped from storage are partially discharged — a slow initial charge lets each cell reach equal voltage and unlocks rated capacity.

Why the Free base station shows no charge light on a new Ni-MH pack

Ni-MH batteries lose voltage during storage. If the pack sits long enough, its resting voltage drops below the threshold the base station uses to detect a valid battery. The charger circuit looks for a minimum voltage before it starts — if that floor isn't met, the charge LED stays off or flashes an error. Seat the handset in the base and wait 15–20 minutes; most base stations will trickle enough current to bring the pack above 4.0V and trigger normal charging.

Talk time shorter than expected after fitting the new battery

Ni-MH cells don't reach full rated capacity on the first charge cycle — this is normal chemistry behaviour, not a fault. The cells need three to five full charge-and-discharge cycles before capacity stabilises at the 1500mAh rating. Avoid putting the handset back on the base after short calls during the first week; let the pack run down to the low-battery warning before reseating it. By cycle five, talk time should match what the original battery delivered when new.