Audioline CDL 960G Replacement Battery 3.6V 600mAh

Audioline CDL 960G / 970G — 3.6V Ni-MH Replacement Battery

This is a 3.6V 600mAh Ni-MH rechargeable battery for the Audioline CDL 960G and 970G cordless DECT handsets, plus the Sanyo CAS 1200 and CAS 1300 and over 28 additional compatible models. It slots directly into the handset battery compartment and restores the phone to full operation. Use the capacity figure above — 600mAh — as the rated spec for this cell.

• CDL 960G / 970G and Sanyo CAS series fit: These models share the same 3.6V single-cell NiMH rail, connector pinout, and physical footprint. The base station charging circuit expects NiMH chemistry — swapping to a different chemistry would confuse the trickle-charge logic and prevent a full charge.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a cordless phone handset platform. The NiMH BMS accepted the pack without triggering an error state, and voltage held stable across the full discharge curve under simulated talk and standby loads.
• First-install charge for NiMH handsets: After fitting the battery, seat the handset in the base and leave it for a full 16 hours before using it. NiMH cells in cordless phones need this slow initial charge to reach rated capacity — a short first charge leaves the cell partially conditioned and talk time will be noticeably reduced for the first several cycles.

Why talk time is shorter than the original battery after replacement

NiMH cells ship in a partially discharged state and need three to five full charge-discharge cycles before they reach rated capacity. On cycle one, you may get noticeably less talk time than the original battery delivered. Each full cycle conditions the cell further. By cycle five, talk time should stabilise at the rated level for this 600mAh pack.

Base station not charging the handset after battery swap

NiMH cells that have sat in storage can drop to a voltage the base station charging circuit reads as a fault — typically below 3.0V — and the charger withholds current rather than risk overcharging a cell it cannot verify. Remove the handset, check the battery contacts on both the pack and handset are clean and making solid contact, then reseat the handset firmly. If the base still shows an error, try a known-good USB or bench charger to nudge the cell above 3.2V first, then return it to the base.