About this replacement
IMET M880 AXT Series — 1.2V Ni-MH Replacement Battery (BE1200)
This is a 1.2V, 4300mAh Ni-MH replacement battery for the IMET M880 AXT crane remote control and AXT Transmitters. It replaces OEM part numbers BE1200 and AS105. The M880 AXT is a wireless industrial remote used to operate overhead cranes and hoists from a safe distance on the floor.
- M880 AXT and AXT Transmitter compatibility: Both the M880 AXT and AXT Transmitter variants share the same battery form factor, connector type, and 1.2V supply rail. One battery fits across this transmitter family without modification.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on the bench. The BMS held stable voltage during simulated solenoid activation events — no dropout or cutoff trip was recorded at rated capacity.
- Infrequent-use charging schedule: Crane remotes can sit idle for weeks between jobs. Charge this battery at least once a month during inactive periods. Ni-MH cells left fully discharged for extended periods suffer permanent capacity loss that no charger can reverse.
Solenoid activation causing power dropout on a freshly installed battery
When the M880 AXT activates a crane solenoid or relay, it draws a short inrush current spike. If the battery is at storage voltage rather than full charge, that spike can drag cell voltage below the BMS cutoff threshold. The remote drops out mid-command — which looks like a faulty battery but is actually a voltage-sag trip. A full charge cycle before first use eliminates this. Measure resting voltage before installation; a fully charged Ni-MH cell should read at or above 1.4V.
Remote showing low-battery warning immediately after cell swap
A new Ni-MH cell ships at storage voltage — typically 1.2–1.25V — not at full charge. The M880 AXT interprets this low resting voltage as a depleted battery and triggers the low-battery indicator straight away. This is not a fault with the cell. Connect the battery to the OEM charger and run a complete charge cycle before powering the remote. The warning will clear once the cell reaches its full charge state.