About this replacement
Educator 700A / 800A Receiver Series — 4.8V Ni-MH Replacement Battery (GPRHC043M032)
This is a 4.8V, 300mAh Ni-MH rechargeable battery for the Educator remote dog training receiver collar. It fits the 700A, 702A, 800A, and 802A receiver units, plus six additional models in the same series. It replaces OEM part GPRHC043M032 directly.
- 700A and 800A receiver compatibility: These models share the same voltage rail, cell configuration, and connector footprint. The 4.8V pack runs four NiMH cells in series — swapping between models in this family works without modification.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on the 700A receiver. The protection circuit responded correctly to end-of-charge termination and low-voltage cutoff without triggering false shutdowns.
- First charge after installation: NiMH cells shipped in partial discharge state can show reduced capacity on the first cycle. Run a full charge through the Educator docking cradle before field use — the pack typically reaches rated capacity by the second or third cycle.
Why the 700A receiver stops responding mid-session after a battery swap
A freshly installed NiMH pack that wasn't fully charged before use can sag below the receiver's operating threshold under transmit load. The 700A receiver draws a brief current spike when it activates the stimulation circuit. If the cell voltage drops below roughly 4.0V under that load, the unit cuts out. Charge the pack fully before the first session and the voltage sag stays within the operating window.
Receiver reads as charged but loses power quickly in the field
NiMH cells develop a voltage depression after repeated shallow discharges — the pack appears full on the charger but actual usable capacity is reduced. This is common when the receiver is topped up after every short session instead of being run down further. To recover capacity, allow the pack to discharge more fully before recharging. If the issue persists after two or three full cycles, the cells have degraded and replacement is the correct fix.