Dogtra 175NCP Transmitter Compatible Battery 4.8V 300mAh

Dogtra Transmitter 175NCP / 200NCP Series — 4.8V Ni-MH Replacement Battery (BP12RT)

This is a 4.8V 300mAh Ni-MH battery for Dogtra handheld transmitters, including the 175NCP, 200NC, 200NCP, and 202NCP among more than 30 compatible models. It replaces OEM part numbers BP12RT and GPRHC043M016. The transmitter is the handheld remote used to send signals to Dogtra training collars during obedience and field work.

• Transmitter series compatibility: These Dogtra remotes share a common 4.8V battery bay, connector pinout, and charge circuit across the 175NCP through 202NCP line. The same physical cell pack and BMS handshake applies across all listed models, so one SKU covers the full range.
• Bench tested on actual hardware: We cycled this battery through the Dogtra charge circuit and confirmed the BMS accepted the charge profile without rejection flags. Discharge testing confirmed stable output voltage under continuous signal-send load without mid-session dropout.
• Ni-MH transmitter storage tip: If the transmitter sits unused for more than two weeks, remove the battery. Ni-MH cells left in a discharged state inside the unit can reverse-polarise at the cell level and fail to recover on the next charge cycle.

Why the Dogtra transmitter stops responding mid-session after a new battery install

A freshly installed Ni-MH pack that hasn't been fully charged can sag below the transmitter's operating threshold during back-to-back button presses. The 175NCP and similar models draw a short current spike on each signal send, and a partially charged cell can't sustain that spike without voltage dropping below the cutoff. The transmitter reads this as a low-battery shutdown rather than a fault. Charge the pack fully before the first session — the LED on the Dogtra charger should go green before you unplug.

Transmitter shows full charge but loses power faster than the original battery did

Ni-MH cells can develop a false capacity floor if the previous battery was regularly shallow-cycled — short charges before the pack was fully depleted. The charge circuit calibrates its "full" reading against cell resistance, not true capacity. The fix is a full discharge-to-cutoff followed by a complete charge cycle, repeated twice. After two conditioning cycles, resting voltage should stabilise at 5.4–5.6V for a healthy 4.8V Ni-MH pack.