Abitron KH68302500 Crane Remote Replacement Battery 6V 700mAh

Abitron TGA / TGB — 6V Ni-MH Replacement Battery (KH68302500)

This is a 6V, 700mAh Ni-MH replacement battery for the Abitron TGA and TGB wireless crane remote control systems. It replaces OEM part KH68302500. These remotes operate overhead cranes in industrial environments, so a dead battery stops lifting operations entirely.

• TGA and TGB compatibility: Both models run on the same 6V battery rail with an identical connector footprint and cell count. The BMS in each remote expects the same charge termination signal, so one cell pack covers both units without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a TGA remote. The BMS accepted the charge curve without error flags, and the remote transmitted control signals normally through each test cycle without voltage sag triggering a cutoff.
• Monthly charge cycle for infrequent crane remotes: Crane remotes often sit idle between jobs for weeks or months. Ni-MH cells self-discharge at roughly 20–30% per month at room temperature. If the pack drops too low, the remote will not power on at all. Charge it once a month during any idle period to keep the cells above the cutoff floor.

Why solenoid activation drops power on a new TGA battery

When a crane remote fires a solenoid or relay, it pulls a short inrush current spike — often three to five times the steady-state draw. A new cell at storage voltage, typically 1.2V per cell rather than full charge, has higher internal resistance than a fully charged pack. That resistance causes a voltage dip during the inrush spike. If the dip crosses the BMS undervoltage threshold, the remote cuts power mid-command. Always charge the pack fully before the first solenoid activation.

Remote showing low battery immediately after new cell install

A freshly installed Ni-MH pack ships at storage voltage, not full charge. The TGA remote reads cell voltage on startup and flags low battery if it sees anything below the operating threshold. This is not a faulty battery — it is the expected state of an uncharged Ni-MH pack. Place the remote on its charger for a full charge cycle before use. After charging, the resting voltage across all cells should measure at or above 7.2V total.