Samsung SPR-6000 Cordless Phone Replacement Battery 3.6V 600mAh

Samsung SPR-6000 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 600mAh Ni-MH replacement battery for the Samsung SPR-6000 cordless phone handset. It slots into the handset battery compartment and restores power to the wireless unit. No OEM part number is listed for this model — fit is confirmed against the SPR-6000 handset directly.

• SPR-6000 handset fit: The SPR-6000 runs a single-cell 3.6V Ni-MH pack at this form factor. The 42.64 x 30.00 x 14.45mm cell matches the original bay geometry and connector orientation. No modifications needed.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the bench. The cell voltage climbed correctly through the Ni-MH charge curve and the handset accepted it without fault indication on the base station display.
• First charge on NiMH cordless packs: After installing this battery, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells at storage charge do not reach rated capacity until the first slow charge completes fully — skipping this step means the first few talk sessions will be noticeably short.

Base station showing no charge or error light after battery swap

NiMH cells sit at a reduced voltage after months in storage — sometimes as low as 3.0V or below. Some DECT base stations check incoming voltage before starting a charge cycle, and a pack that reads too low gets rejected outright. The fix is straightforward: leave the handset seated in the base undisturbed for two to three hours. Most base stations will trickle-charge a low pack back above the acceptance threshold and then switch to normal charge mode automatically.

Talk time shorter than the original battery after replacement

This is expected behaviour with a fresh NiMH pack and not a fault. NiMH chemistry needs three to five full charge and discharge cycles before the cells reach rated capacity. The first cycle after that 16-hour initial charge will still feel short — that is normal. Run the handset down to low battery, return it to the base for a full charge, and repeat. By cycle four or five, talk time will be at or close to the 600mAh rated level.