Logicom CT800 Replacement Battery 3.6V 700mAh Ni-MH

Logicom CT800 / Galeo — 3.6V Ni-MH Replacement Battery

This is a 3.6V 700mAh Ni-MH replacement battery for the Logicom CT800 and Galeo cordless DECT handsets. It slots directly into the handset battery compartment and restores power to the handset when the original cell can no longer hold a charge. Voltage and physical dimensions match the original pack: 45.90 × 31.20 × 10.70mm.

• CT800 and Galeo compatibility: Both handsets share the same battery bay dimensions, voltage rail, and connector orientation. A single cell pack at 3.6V is all the handset expects — no BMS handshake is required, so the swap is straightforward.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a DECT handset platform at 3.6V. The cell accepted a full charge without thermal event and held voltage within spec across standby and active transmit loads.
• First charge after installation: Place the handset in the base station immediately after fitting this battery and leave it there for a full 16 hours before first use. Ni-MH cells shipped in storage state need a slow initial charge to reach rated 700mAh capacity — a quick top-up will leave you short of full talk time for the first several cycles.

Talk time shorter than expected after fitting this battery

Ni-MH cells store poorly and arrive partially discharged. The first three to five full charge-discharge cycles are conditioning cycles — capacity builds incrementally each time. If talk time feels short after the first charge, that is expected behaviour, not a faulty cell. Run the handset until the low-battery tone sounds, return it to the base for a full 16-hour charge, and repeat for at least three cycles. By cycle four or five, the cell should be delivering close to its rated 700mAh.

Base station charge light not coming on after new battery fitted

A Ni-MH cell that has sat in storage can drop below the voltage threshold the base station uses to detect a valid battery. If the charge indicator stays off when you dock the handset, the base is not seeing sufficient voltage to begin charging. Remove the handset, hold the battery contacts briefly across a 3.6V source for a few seconds to raise resting voltage, then re-dock. Alternatively, leave the handset seated in the base undisturbed for 30 minutes — most Logicom bases will eventually begin a trickle charge once contact is confirmed and will trigger the charge light once the cell clears the acceptance threshold.