KAR-TECH 010-038-2600 Crane Remote Compatible Battery 3.7V 2600mAh

KAR-TECH 010-038-2600 — 3.7V Li-ion Replacement Battery

This is a 3.7V 2600mAh (9.62Wh) Li-ion replacement battery for the KAR-TECH 010-038-2600 wireless crane remote control. It fits the handheld transmitter used to operate overhead cranes and industrial hoists. Voltage and capacity match the original cell spec exactly.

• 010-038-2600 transmitter fit: The KAR-TECH 010-038-2600 remote runs on a single cylindrical Li-ion cell at 3.7V nominal. The BMS in this transmitter monitors cell voltage directly — any cell outside tolerance triggers a shutdown before the operator gets a warning. Capacity and discharge curve must match the original to keep the BMS logic stable.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the bench, confirming the BMS handshake, full charge cutoff at 4.2V, and low-voltage cutoff behaviour at the expected threshold. The protection circuit activates cleanly without false trips under normal remote-control load.
• Monthly charge during idle periods: Crane remotes often sit unused for weeks or months between jobs. Li-ion cells discharged below 2.5V enter deep-discharge BMS lockout. Charge this battery once a month during any idle period — even if the remote is not in use — to keep the cell above the recovery threshold.

Solenoid activation causing power dropout on the 010-038-2600

When the operator triggers a crane movement command, the transmitter sends a high-current burst to activate the relay or solenoid signal. If the cell voltage is already low, that inrush demand pulls the terminal voltage below the BMS cutoff threshold in milliseconds. The BMS reads this as a fault and shuts the cell down — the remote goes dark mid-operation. A fully charged cell at 4.2V has the headroom to absorb that spike without tripping the protection circuit.

Remote showing low battery immediately after a new cell is installed

Li-ion cells ship and store at around 3.6–3.7V — that is roughly 40–50% state of charge, not full. The 010-038-2600 transmitter reads this as a low-battery condition and flags it on the indicator. This is not a faulty cell. Connect the remote to its charger and bring the cell to 4.2V before use. The low-battery warning will clear once the cell reaches the transmitter's full-charge voltage threshold.