Komatsu Crane Remote Control Replacement Battery 3.6V 2000mAh

Komatsu Remote Control Transmitters — 3.6V Ni-MH 2000mAh Replacement Battery

This is a 3.6V, 2000mAh Ni-MH replacement battery for Komatsu remote control transmitters used in crane and industrial hoist operations. It slots into the transmitter housing and powers the wireless control signals operators rely on for load positioning and crane movement. Voltage and capacity match the original cell at 3.6V and 2000mAh (7.2Wh).

• Crane transmitter platform fit: Komatsu crane remote transmitters in this category share a consistent 3.6V Ni-MH cell format — same connector orientation, cell footprint at 60.20 x 54.55 x 22.20mm, and charge management expectations. That common platform is why this cell covers the transmitter range without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a transmitter bench rig, confirming the BMS accepted the cell without fault codes and that solenoid activation commands did not trigger a power dropout under normal operating load.
• Transmitter storage charge protocol: If the transmitter sits unused on a shelf between job sites, charge the battery once a month. Ni-MH cells self-discharge faster than Li-ion — a crane remote left for two to three months can drop low enough that the transmitter refuses to power on until a full charge cycle is completed.

Crane remote not powering on after months of infrequent use

Ni-MH cells self-discharge at roughly 1–3% per day at room temperature. A transmitter stored for two to three months without a top-up charge can drop the cell below the transmitter's minimum startup voltage. The controller's internal circuit sees insufficient voltage and holds the unit off as a protection measure. Connect the transmitter to its charger for at least 30–45 minutes before attempting to power on — the cell needs enough charge to clear the startup threshold before the unit will respond.

Transmitter showing low-battery indicator immediately after installing a new cell

A new Ni-MH cell ships at storage voltage — typically 1.0–1.1V per cell, which is well below the 1.2V nominal operating level. The transmitter reads that as a low or depleted battery and flags it immediately. This is not a fault with the cell. Place the transmitter on charge before first use and allow a full charge cycle to complete. Once the cell reaches nominal voltage, the low-battery indicator will clear.