Cavotec MC-1000 Crane Remote Replacement Battery 6V 700mAh

Cavotec Microcontrol MC-1000 / MC-2000 Transmitter — 6V Ni-MH Replacement Battery (B02000)

This is a 6V, 700mAh Ni-MH replacement battery for the Cavotec Microcontrol MC-1000 and MC-2000 wireless crane transmitters. It replaces OEM part numbers B02000 and M5-1051-1000. These transmitters are used to operate overhead cranes and material handling equipment from a distance, so a dead battery stops work on the floor.

• MC-1000 and MC-2000 compatibility: Both transmitter models run the same 6V battery rail, share the same physical housing dimensions, and use the same connector and BMS handshake — which is why one cell covers both platforms.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the MC-1000 transmitter and confirmed the BMS accepted the cell without error codes, held steady voltage under radio transmission load, and triggered the low-battery alert at the correct threshold.
• Storage charge for infrequent crane operations: If the transmitter sits idle between jobs, put the battery on charge once a month. Ni-MH cells self-discharge faster than Li-ion — a cell left uncharged for several months can drop below recovery voltage and refuse to accept a charge, even when connected to the correct charger.

Solenoid activation causing power dropout on the MC-1000

When a crane solenoid or relay fires, the inrush current spike hits the transmitter battery hard and fast. A cell with reduced capacity — even one that reads "charged" — can sag below the transmitter's minimum operating voltage during that spike, causing the unit to drop out or reset mid-operation. This is not a transmitter fault. The 700mAh rating on this cell is matched to the MC-1000's inrush tolerance. If dropout persists after fitting a new, fully charged cell, check the transmitter's internal contacts for corrosion before suspecting the battery.

Transmitter showing low battery immediately after fitting a new cell

A new cell shipped in storage state typically sits at 4.8–5.0V rather than the full 6V the transmitter expects. The MC-1000 reads this as a low or depleted battery — which is correct, because the cell genuinely is not at operating voltage yet. This is not a faulty battery. Connect the transmitter to its charger before first use and allow a full charge cycle to complete. Once the cell reaches 6V, the low-battery indicator will clear and the unit will operate normally.