Telekom A602 Touch Cordless Phone Replacement Battery 2.4V 700mAh

Telekom A602 Touch — 2.4V Ni-MH Replacement Battery

This is a 2.4V, 700mAh Ni-MH battery pack for the Telekom A602 Touch cordless DECT handset. It replaces the original cell when charge retention drops and the handset can no longer hold a usable standby or talk charge. Dimensions are 44.60 × 20.91 × 10.47mm — measure your existing pack before ordering if you are unsure.

• A602 Touch handset fit: The A602 Touch runs a 2.4V two-cell Ni-MH pack in a slim profile housing. This battery matches that voltage rail and physical footprint, so the handset closes correctly and the charging contacts align with the base station cradle.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a Ni-MH compatible bench tester. The cell voltage held stable above 2.2V through the first three cycles, and the pack reached rated capacity by cycle five — consistent with normal Ni-MH conditioning behaviour.
• First charge after installation: After fitting this battery, seat the handset in the base station and leave it on charge for a full 16 hours before use. Ni-MH cells shipped in partial-discharge state need a slow, uninterrupted initial charge to reach rated capacity — skipping this step will result in shorter talk time from day one.

Range reduction after fitting a new Ni-MH pack

DECT handsets regulate transmit power based on available battery voltage. A fresh Ni-MH pack that has not been fully conditioned sits at a lower resting voltage than a fully cycled cell. When the handset's RF module draws current during transmission, voltage sags further — the radio drops power to compensate, cutting effective range. Run three to five full charge-discharge cycles and the resting voltage will stabilise, restoring normal transmit output.

Base station shows no charge or error light after battery swap

Ni-MH packs stored in a discharged state can sit below 2.0V per pack — below the acceptance threshold some base stations use before initiating a charge cycle. The base reads the voltage, sees it as a fault condition, and either shows an error light or does nothing. Place the handset in the base for at least 30 minutes without disturbing it; most Telekom base stations will trickle-charge a low pack until it crosses the acceptance voltage, then switch to normal charge mode. If the error persists after one hour, check that the handset is fully seated and the charging contacts are clean.