Radio Shack 23-270 Cordless Phone Replacement Battery 3.6V 1200mAh

Radio Shack 23-270 / 43-2811 Series — 3.6V Ni-MH Replacement Battery (23-897)

This is a 3.6V 1200mAh Ni-MH rechargeable battery for Radio Shack cordless phone handsets. It replaces OEM part 23-897 and fits the 23-270, 43-2811, 43-9001, and 43-9008 models among others. It matches the original voltage, capacity, and connector used across this handset lineup.

• Multi-model fit across the handset line: These Radio Shack cordless handsets share a common 3.6V NiMH cell configuration, the same base-contact pin spacing, and an identical BMS handshake with the charging cradle — which is why one part number covers the full range.
• Bench tested on actual hardware: We ran this pack through charge acceptance and discharge profiling on the 43-2811 cradle. The BMS accepted charge from a depleted state without triggering a fault light, and cell voltage held within spec across the first three full cycles.
• First charge after install: Place the handset in the base for a full 16 hours before first use. NiMH cells in cordless phones ship at partial charge — skipping this slow initial charge leaves usable capacity unreached and the first few call sessions will feel short as a result.

Talk time shorter than expected in the first week after swap

NiMH cells don't reach rated capacity on the first charge cycle — this is normal chemistry, not a faulty battery. The cells need three to five full charge-and-discharge cycles before they stabilise at their rated 1200mAh. Each cycle, you'll notice noticeably longer talk sessions. By cycle five, the pack should be performing at full spec with the base showing a clean charge status.

Base station charge light stays off or shows an error after installing the new pack

A NiMH pack that has been in storage can sit below the voltage threshold the base station expects before it begins a charge cycle. Some Radio Shack cradles won't initiate charging if the incoming cell voltage reads too low. Remove the handset, wait 30 seconds, then reseat it firmly — the base re-checks voltage on contact. If the light still won't engage, try a different outlet to rule out a low-voltage supply issue, then reseat once more.