Sony 6030 Cordless Phone Replacement Battery 2.4V 700mAh

Sony 6030 / 6031 / 6032 / 6041 Series — 2.4V Ni-MH 700mAh Replacement Battery

This is a 2.4V, 700mAh Ni-MH replacement battery for Sony cordless phone handsets in the 6030 series. It fits the 6030, 6031, 6032, and 6041 models, along with six additional variants in the same handset family. Physical dimensions are 43.55 × 20.42 × 10.60mm — measure your original cell before ordering if unsure.

• 6030-series handset compatibility: These models share the same 2.4V two-cell NiMH pack format, identical connector pinout, and matching charge acceptance rate from the base station cradle. Swapping between them does not require any handset reconfiguration.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a 6031 handset. The base station accepted charge immediately, voltage climbed to 2.8V at full charge, and the BMS held within normal NiMH termination parameters across all cycles.
• First-charge protocol for NiMH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells ship partially discharged — a slow initial charge lets all cells in the pack reach balanced capacity. Skipping this step is the single most common cause of short talk time on a new battery.

Talk time shorter than the original battery after replacement

NiMH cells require three to five full charge-discharge cycles before they reach rated capacity. A new pack fresh from storage will often deliver noticeably less talk time on the first cycle — this is normal cell chemistry, not a fault. Each subsequent full cycle conditions the pack further. By cycle five, capacity should stabilise at or near the rated 700mAh.

Base station shows no charge light or error after battery swap

NiMH cells stored for extended periods can drop below the voltage threshold the base station uses to detect a valid pack — typically below 2.0V on a 2.4V cell. When this happens, the base refuses to initiate a charge cycle and either shows no light or an error indicator. Place the handset in the base anyway and leave it undisturbed for 30 minutes. Most Sony base stations will trickle-start charging once the pack voltage climbs above the acceptance floor of approximately 2.0V.