MPF Products 460mAh BP74R Battery for Dogtra 2300 2302 2500 2502 3500 3502 training aid

Replacement battery for Dogtra training collars

This 7.4V 460mAh lithium-polymer pack replaces the BP74R cell used in Dogtra 2300, 2302, 2500, 2502, 3500 and 3502 series receivers. It restores full runtime to NCP, Advance and Super-X models so the trainer remains ready for field work. The 3.4Wh capacity matches the original specification for consistent stimulation and tone performance. Hunters and professional trainers who rely on these specific collars will find it a direct fit.

Simple two-wire connector swap

Installation requires opening the receiver housing, disconnecting the old pack and plugging in the new one using the existing two-pin lead. No soldering or special tools are needed, but the small screws can strip if the wrong driver is used. The most common issue is forgetting to reseal the gasket, which compromises the waterproof rating. Careful alignment of the connector pins prevents bent terminals on the first charge.

Steady voltage through long training sessions

The lithium-polymer chemistry holds a stable 7.4V output across the discharge curve, so stimulation levels stay predictable from the first correction to the last. Self-discharge is low between weekly outings, meaning the collar is still charged after storage. Extended continuous use at high stimulation settings will drain the 460mAh capacity faster than intermittent use, but voltage sag remains minimal until the pack is nearly empty.