MT-D AVM20002434 Cordless Phone Compatible Battery 2.4V 600mAh

MT-D AVM20002434 — 2.4V Ni-MH Replacement Battery (5M702BMX)

This is a 2.4V, 600mAh Ni-MH replacement battery for the MT-D AVM20002434 cordless phone handset. It fits directly in place of the original cell pack, restoring power to the handset. Cross-references include GP0827, GP0845, GP0735, GP0747, and GP0748.

• AVM20002434 handset compatibility: These OEM part numbers all share the same 2.4V dual-cell NiMH configuration, matching connector pitch and cell arrangement. The BMS on this handset accepts the voltage profile of this pack without triggering a charge error.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the AVM20002434 base station. The base accepted the pack immediately, charge current ramped normally, and the BMS reached termination without fault flags on cycles one through five.
• First charge on NiMH cordless handsets: After installing this battery, 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 — a slow first charge lets each cell reach rated capacity evenly. Skipping this step results in shorter talk time on the first several cycles, which is the most common reason buyers assume a new battery is faulty.

Why NiMH talk time on the AVM20002434 runs short for the first few cycles

NiMH cells arrive from storage at reduced capacity — typically 60–70% of rated. The AVM20002434 base uses a trickle-charge circuit that tops the pack up slowly over multiple sessions. Full capacity builds over three to five complete charge-discharge cycles. After that conditioning period, the pack stabilises at its rated 600mAh output.

Base station shows no charge light after fitting the new pack

A NiMH pack sitting in storage can drop below 2.0V total — the threshold some base stations use to confirm a valid battery is present. If the charge indicator stays dark, remove the handset, wait 10 seconds, and reseat it firmly. If the error persists, briefly charge the pack in the base for 30 minutes, then remove and reinsert — this nudges the voltage above the acceptance threshold and the base resumes normal charging.