KINETIC MH750PF64HC Dog Collar Replacement Battery 4.8V 750mAh

KINETIC MH750PF64HC — 4.8V Ni-MH Replacement Battery

This is a 4.8V, 750mAh Ni-MH rechargeable battery for the MH750PF64HC remote dog training collar. It replaces the original cell pack when capacity fades and the collar no longer holds a charge through a full training session. Dimensions are 48.87 x 34.05 x 12.49mm — verify these against your existing pack before ordering.

• MH750PF64HC collar fit: This battery matches the voltage rail and physical form factor of the MH750PF64HC collar. The 4.8V Ni-MH cell arrangement suits the low-current draw of training collar electronics — transmitter circuits and stimulus output are both sized for this chemistry.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a Ni-MH compatible charger and confirmed the BMS accepted full charge without thermal cutoff. Voltage at full charge measured within the expected range for a 4.8V Ni-MH pack.
• Post-swap collar initialisation: After fitting this battery, power the collar on and allow 60–90 seconds before pairing or testing stimulus output — the collar's microcontroller runs a brief self-check on first boot after a power interruption.

Why Ni-MH cells in training collars lose capacity faster than the rated cycle count suggests

Ni-MH cells are sensitive to shallow cycling — repeated charges from 60–80% without a full discharge accelerate memory effect and reduce usable capacity over time. Training collars are especially prone to this because owners often top-charge after short sessions rather than running the pack down. The result is a battery that reads "full" but delivers noticeably less output after six to twelve months. Conditioning the new pack with two or three full discharge-and-recharge cycles before regular use helps establish accurate capacity from the start.

Collar shows charging indicator but voltage won't climb past 4.2V

This usually means the charger is detecting current draw from a deeply discharged or faulty cell and shutting off early — not completing a full charge. A healthy 4-cell Ni-MH pack at full charge should sit at approximately 5.6V open-circuit. If the collar charger terminates early, try a standalone Ni-MH smart charger that uses delta-V detection rather than timer-based cutoff. Connect the new battery, confirm it reaches at least 5.4V before use, and re-seat it in the collar.