TOPAN TP-AVC701 Crane Remote Compatible Battery 14.4V 2000mAh

TOPAN TP-AVC701 — 14.4V Ni-MH Replacement Battery

This is a 14.4V, 2000mAh Ni-MH replacement battery for the TOPAN TP-AVC701 wireless crane remote control. It fits overhead and gantry crane remote systems running on the TP-AVC701 platform. Voltage and capacity match the original cell pack specification exactly.

• TP-AVC701 platform fit: The TP-AVC701 remote runs a 14.4V bus that powers the RF transmitter board, solenoid relay triggers, and safety logic simultaneously. This cell pack matches that voltage rail and the physical connector orientation so the remote's internal BMS handshake completes on power-up.
• Bench tested on actual hardware: We cycled this battery through transmit bursts and solenoid activation sequences. The BMS held voltage above the remote's low-battery cutoff threshold across repeated relay activation events without triggering a dropout.
• Storage charge for infrequently used crane remotes: Crane remotes often sit idle for weeks between jobs. Ni-MH cells self-discharge at roughly 1–2% per day at room temperature — a remote stored for two months can drop low enough that the remote's control board won't initialise. Put the battery on charge once a month during any idle period.

Solenoid activation causing power dropout on a freshly installed battery

When a crane operator triggers a hoist or travel command, the solenoid or relay coil draws a sharp inrush current that spikes briefly well above steady-state draw. A Ni-MH cell at storage voltage — typically 1.2V per cell, not full charge — has higher internal resistance and can't supply that inrush without the terminal voltage sagging below the remote's BMS cutoff. The remote shuts off mid-command to protect the control board. The fix is straightforward: charge the battery fully before the first operational use. A fully charged Ni-MH pack has lower internal resistance and sustains the inrush without a voltage sag event.

Remote showing low-battery indicator immediately after cell swap

A new Ni-MH battery ships at storage voltage, typically around 50–60% of rated capacity, not full charge. The TP-AVC701 remote reads terminal voltage on power-up to estimate state of charge — a cell at storage voltage registers as low rather than full. This is not a faulty battery. Place the pack in the charger for a full charge cycle until the charger indicates complete, then reinsert. The low-battery indicator will clear once the cell voltage reaches the remote's normal operating threshold.