JAY UDE Transmitter Replacement Battery 3.6V 700mAh Ni-MH

JAY UDE Transmitter Series — 3.6V Ni-MH Replacement Battery (XDB / GP70AAAH3TX)

This is a 3.6V, 700mAh Ni-MH replacement battery for the JAY UDE Transmitter and compatible crane remote control units. It fits the UDE Transmitter, Transmitter XDE, VUF110, and UWB A001 series. Swap it when the original cell no longer holds a charge or the remote stops powering on at the start of a shift.

• UDE / XDE / VUF110 / UWB A001 compatibility: These remotes share a 3.6V single-cell Ni-MH platform with the same physical cell footprint (44.70 × 21.10 × 19.80 mm) and connector pinout, so one cell fits the full listed range without modification.
• Bench tested on actual hardware: We ran the cell through charge and discharge cycles on a crane remote platform. The BMS accepted the cell cleanly, solenoid activation commands drew the expected current spike without triggering a protection cutoff, and the remote held its ready state throughout the test sequence.
• Infrequent-use charging discipline: If this remote sits unused for weeks between jobs, charge the battery at least once a month. Ni-MH cells left in deep self-discharge below 1.0V per cell can develop voltage depression that a standard charger may not recover — a conditioning cycle on a Ni-MH–capable charger at low current is the fix.

Solenoid activation causing power dropout on a freshly installed cell

When a crane remote fires a solenoid or relay, the inrush current spikes sharply — sometimes 3× to 5× the standby draw. A Ni-MH cell at storage voltage (around 1.2V nominal but sitting low after shipping) has elevated internal resistance, which causes the terminal voltage to sag hard under that spike. The remote's protection circuit reads that sag as a fault and cuts power. Charge the cell fully before the first operational use — a full charge lowers internal resistance and gives the cell headroom to supply that peak current without dropping out.

Remote showing low-battery warning immediately after new cell install

A new Ni-MH cell ships at partial storage charge — typically 40–60% of rated capacity — not at full voltage. If the remote polls battery state on startup, it reads that reduced open-circuit voltage and flags a low-battery condition right away. This is not a defective cell. Connect the remote to its charger and run a full charge cycle before returning it to service. After a complete charge the voltage will read correctly and the warning will clear.