Universal AA x 2 Cordless Phone Replacement Battery 2.4V 600mAh

Universal AA x 2 — 2.4V Ni-MH Replacement Battery for Cordless Phones

This is a 2.4V 600mAh Ni-MH battery pack built from two AA-sized rechargeable cells. It fits cordless phone handsets that take a standard AA x 2 configuration. Dimensions are 49.25 x 28.51 x 14.36mm — check your existing pack against these before ordering.

• AA x 2 cordless phone compatibility: Many cordless handset models share this cell format because the 2.4V rail matches the charging circuit built into DECT base stations. Same voltage, same footprint — that's why one pack covers a wide range of brands.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a DECT handset base. The NiMH cells accepted the trickle charge without triggering a fault light, and voltage held steady at 2.4V under the handset's standby draw.
• 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 shipped in partial-discharge state need a slow initial charge to reach rated capacity — skipping this shortchanges your available talk time from day one.

Talk time shorter than original battery after replacement

NiMH cells need three to five full charge-discharge cycles before they hit rated capacity. The cells arrive from storage with partial charge, so the first cycle rarely delivers full performance. Run the handset until it prompts you to charge, then return it to the base for a complete charge — repeat this three times. By cycle four, the pack should be delivering its full 600mAh.

Base station showing no-charge or error light with new pack

Some DECT base stations read cell voltage before committing to a charge cycle. A pack that has self-discharged below roughly 2.0V during storage can fall under that acceptance threshold, causing the base to show an error or simply do nothing. Pull the handset out, wait 30 seconds, and reseat it firmly — a full contact reset often triggers the charge circuit to retry. If the error persists, check that the contacts on the handset and base are clean and making solid connection.