Dogtra BP2T Transmitter 1800NC Replacement Battery 7.2V 700mAh

Dogtra Transmitter 1800NC / 2000NCP / 2200NCP Series — 7.2V Ni-MH Replacement Battery (BP2T)

This 7.2V, 700mAh Ni-MH battery replaces part number BP2T in Dogtra handheld transmitters used for dog training. It fits the Transmitter 1800NC, 2000NCP, 2002NCP, 2200NCP, and more than 49 additional Dogtra transmitter models. The cell pack matches the original voltage rail and connector, so no wiring or adaptation is needed.

• Shared platform across Dogtra transmitter lines: The 1800NC, 2000NCP, 2002NCP, and 2200NCP transmitters use the same 7.2V Ni-MH cell pack and connector pinout. Dogtra standardised this across multiple training system generations, which is why BP2T, BPRR, and PSU-BPRR all cross-reference to the same physical battery.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a Dogtra transmitter test rig. The protection circuit held cutoff correctly at the low-voltage threshold and accepted a full charge without thermal event or abnormal termination.
• First charge after a long storage gap: Ni-MH cells shipped from storage may sit at suppressed voltage. If the transmitter shows a low-battery indicator immediately after fitting, charge the pack fully before use — the charger needs to see the cell recover above the detection threshold before the transmitter will operate normally.

Why the Dogtra transmitter drops signal output before the battery indicator hits red

Ni-MH cells have a relatively flat discharge curve, then voltage drops steeply in the final capacity window. Dogtra transmitters monitor voltage to manage RF output, and some units reduce signal range before triggering the low-battery LED to protect the transmission circuit. This means the collar may stop responding at distance before any visible warning appears on the transmitter. The solution is to charge before the indicator changes, not after — treat a first flicker as your cue, not the red light.

Transmitter powers on but collar stops responding mid-session

This is usually voltage sag under load, not a pairing fault. When the Ni-MH pack is partially depleted, sustained button presses during active training pull enough current to drag the pack voltage below the transmitter's stable operating threshold — momentarily killing the RF output. The collar loses the signal and stops responding, then the transmitter recovers when you release. Check open-circuit voltage at the battery terminals: if it reads below 6.8V under a light load, the pack needs replacing or a full charge cycle before continuing.