Ascom Linga Replacement Battery 3.6V 1200mAh Ni-MH

Ascom Linga — 3.6V Ni-MH Replacement Battery

This is a 3.6V 1200mAh Ni-MH replacement battery for the Ascom Linga cordless DECT phone handset. It restores power to the handset when the original cell no longer holds a charge or fails to power on. Voltage and capacity match the Linga's original specification exactly.

• Ascom Linga handset fit: The Linga uses a 3.6V single-cell Ni-MH pack at a fixed form factor — 52.00 x 42.30 x 14.20mm. This replacement matches that footprint and voltage rail so the handset's charge circuit recognises the pack without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the Linga platform. The handset's charge circuit accepted the battery without fault flags, and the Ni-MH chemistry reached stable capacity output by the third full cycle.
• First-charge protocol for Ni-MH handsets: Place the handset in the base cradle immediately after installing this battery and leave it for a full 16 hours before taking the first call. Ni-MH cells in DECT handsets need that slow initial charge to reach rated capacity — a quick top-up before first use will permanently reduce what this pack delivers.

Base station showing no charge light after fitting a new Ni-MH pack

Ni-MH batteries lose voltage during storage. If this pack sat in a warehouse for several months, its resting voltage may have dropped below the threshold the Linga base uses to confirm a valid cell is present. The base then withholds charge current rather than risk a fault condition. To break the deadlock, hold the handset firmly in the cradle for 10–15 minutes — most Ascom bases will detect a small trickle-charge response and switch into full charge mode. If the charge indicator still does not activate, confirm the handset contacts and cradle pins are clean and making solid contact.

Talk time shorter than the original battery after replacement

This is a Ni-MH conditioning issue, not a faulty cell. Fresh Ni-MH packs do not deliver their rated 1200mAh on the first cycle — capacity builds over three to five full charge-and-discharge cycles as the cell chemistry stabilises. After each call session, return the handset to the base and allow it to charge fully before the next use. By cycle five, talk time should reach the level the original battery delivered when new.