Olympia OL2410 Replacement Battery 3.6V 700mAh Ni-MH

Olympia OL2410 / OL2420 / OL2430 / OL2490 Series — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 700mAh Ni-MH replacement battery for the Olympia OL2410, OL2420, OL2430, OL2490, and over 20 additional cordless phone handsets in the same family. It fits the handset directly, restoring charge capacity when the original cell has degraded. Dimensions are 45.60 × 31.30 × 10.60mm — confirm against your existing pack before ordering.

• OL2410–OL2490 handset compatibility: These models share the same 3.6V single-cell NiMH bay, connector orientation, and physical footprint. One battery specification covers the full range without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on cordless phone handsets to confirm the BMS handshake with the base station and verify stable voltage delivery across the talk circuit.
• 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 in cordless phones ship partially discharged and need a slow initial charge to reach rated capacity — skipping this step will result in noticeably short talk time on the first few cycles.

Talk time shorter than expected after the first few charges

NiMH cells are not at full capacity straight out of storage. The first three to five full charge-discharge cycles are conditioning cycles — each one pushes the cell closer to its rated 700mAh. If talk time feels short after day one, that is normal and expected. Run the handset until it drops, return it to the base for a full charge, and repeat for several cycles before drawing any conclusions about capacity.

Base station not charging or showing an error light after swap

NiMH packs that have sat in storage can drop to a voltage level the base station reads as a fault — some bases refuse to initiate a charge cycle when the incoming voltage is too low. If the charge indicator does not light up within a few minutes of seating the handset, remove it, wait 30 seconds, and reseat it firmly. If the base still shows an error, check that the handset contacts are clean and making full contact with the cradle pins. A firm reseat usually clears the low-voltage fault and allows the base to begin charging normally.