Panafone KX-T38001 Compatible Battery 3.6V 600mAh Ni-MH

Panafone KX-T38001 / KX-T9910 Series — 3.6V Ni-MH Replacement Battery

This 3.6V, 600mAh Ni-MH battery fits the Panafone KX-T38001, KXT9608, KX-T9910, KXT9910DL, and one additional handset in the same series. It replaces the original cell pack directly inside the handset. Capacity figure is from product data — 600mAh, 2.16Wh.

• KX-T38001 and KX-T9910 series compatibility: These handsets share the same 3.6V three-cell NiMH pack format, connector pinout, and physical dimensions (42.60 × 29.95 × 14.54mm). The base station charges through a contact rail that passes voltage directly to the pack — no proprietary BMS handshake is involved, so a correctly rated NiMH pack seats and charges without modification.
• Bench tested on actual hardware: We cycled this pack through the base station charger and monitored terminal voltage across charge and discharge. The cell voltage climbed steadily to the full 3.6V charge plateau. No false full-charge trips were observed during the conditioning phase.
• First-charge protocol for NiMH cordless packs: After installing, seat the handset in the base and leave it for a full 16 hours before using it. NiMH cells in cordless phones need that slow initial charge to reach rated capacity — cutting it short on the first cycle reduces the usable capacity you get from the pack long-term.

Base station showing no charge light on a new NiMH pack

Fresh NiMH packs can sit in storage long enough for self-discharge to pull cell voltage below the threshold the base station expects before it starts the charge cycle. The base reads the low voltage as a fault rather than an uncharged cell. Place the handset in the base for at least 30 minutes without moving it — most Panafone base stations will eventually accept the pack once trickle current nudges the terminal voltage above the detection floor. If the charge light still does not appear, check that the handset contacts are clean and the pack is fully pressed into its slot.

Handset not pairing with base after battery replacement

Removing the battery cuts all power to the handset's memory, and some DECT cordless phones store pairing data in volatile memory — the link to the base is lost when power drops to zero. This is not a battery fault. Re-register the handset using the pairing or registration button on the base station, following the sequence in the handset manual. On most Panafone models this means holding the base station's PAGE or FIND button for five seconds while the handset is powered on and within one metre of the base.