PetSafe PDT00-12470 Replacement Battery 4.8V 150mAh Ni-MH

PetSafe PDT00-12470 — 4.8V Ni-MH Replacement Battery

This 4.8V, 150mAh Ni-MH battery replaces the receiver collar battery in the PetSafe PDT00-12470 wireless pet containment system. It fits the collar unit that detects the boundary signal and delivers corrections when a dog approaches the fence perimeter. Swap it in when the original cell no longer holds a charge and the collar stops responding to the transmitter signal.

• PDT00-12470 collar fit: The PDT00-12470 receiver runs on a compact Ni-MH cell at 4.8V — a chemistry the collar's BMS expects for correct low-voltage cutoff and charge acceptance. Substituting a different chemistry risks mis-triggering the correction circuit or stressing the charge contacts.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the PDT00-12470 collar board. The BMS accepted charge normally, cutoff activated at the correct threshold, and the correction circuit remained stable throughout the test cycle.
• First-fit collar check: After installing, confirm the collar indicator light responds to the transmitter signal before putting it on the dog. Ni-MH cells can sit at a suppressed voltage after shipping — if the collar shows no signal response, place it on the charger for 30 minutes first, then retest.

Why the PDT00-12470 collar stops triggering corrections near the boundary

The correction circuit in the PDT00-12470 needs a stable voltage rail to fire consistently. When the Ni-MH cell drops below approximately 4.2V under load, the collar may still power on and show a signal light, but the correction output weakens or drops out entirely. This is a load-dependent voltage sag — the cell looks fine at rest but collapses when the circuit draws current for a correction pulse. Replacing the cell restores the voltage headroom the circuit needs to trigger reliably at the boundary.

Collar indicator light flashing but boundary corrections not firing

A flashing indicator confirms the collar is receiving the transmitter signal, but corrections not firing is a separate issue tied to output voltage. The BMS will suppress the correction output before it cuts off the indicator — so the light outlives the usable correction capacity. Check resting voltage on the cell; anything below 4.5V on a Ni-MH pack this size means the cell is at end of life. Install the new cell and run a boundary walk test with the collar held at fence height to confirm correction tone activates before returning it to the dog.