Uniross BC102906 Cordless Phone Replacement Battery 2.4V 600mAh

Uniross BC102906 — 2.4V Ni-MH Replacement Battery for Cordless Phones

This is a 2.4V, 600mAh Ni-MH replacement battery for Uniross-compatible cordless DECT phone handsets. It replaces OEM part BC102906 (also listed as 87C). Fits handsets where the original pack has lost charge capacity and no longer supports normal use.

• Cordless DECT handset compatibility: Cordless handsets in this class share a 2.4V Ni-MH cell format with a standardised pack size of 45 × 21 × 10mm. The connector and BMS handshake on these phones accept any correctly rated Ni-MH pack — no proprietary authentication chip involved.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on cordless handset-class equipment. The BMS accepted the pack without error, and voltage held stable across the full discharge curve without premature cutoff.
• First-charge protocol for NiMH handsets: After installing, seat the handset in the base for a full 16-hour charge before first use. NiMH cordless phone batteries require a slow initial charge to fully activate all cells and reach rated capacity — skipping this step shortens useful charge capacity on early cycles.

Base station showing a charging error on a new NiMH pack

NiMH batteries lose voltage during storage. If the resting voltage drops low enough, some cordless bases will reject the pack or show a fault light instead of initiating a charge cycle. The base is looking for a minimum threshold voltage before it opens the charging circuit. Place the handset in the base and leave it undisturbed — most bases will retry after several minutes and begin a trickle charge once the pack responds.

Talk time shorter than rated after replacing the battery

New NiMH cells need three to five full charge-discharge cycles before they reach rated capacity. On the first few cycles, available capacity may run noticeably lower than the 600mAh spec. This is a chemistry characteristic, not a fault. Run the handset through several complete cycles — charge fully in the base, use until the low-battery alert triggers, then charge again — and capacity will normalise.