Dogtra EF3000 Gold Replacement Battery 3.7V 300mAh BP37F

Dogtra EF3000 Gold / iQ Series — 3.7V Li-Polymer Replacement Battery (BP37F)

This 3.7V, 300mAh lithium-polymer battery replaces the OEM BP37F and BP37R cells in Dogtra EF3000 Gold and iQ series dog training collars. It fits the EF3000 Gold containment system collar, the iQ, and the iQ Plus remote training collar. Capacity figure is taken directly from the product specification — 300mAh (1.11Wh).

• EF3000 Gold and iQ collar compatibility: These collars share the same compact Li-Polymer cell format, voltage rail, and connector footprint. The BP37F and BP37R are interchangeable part numbers for the same physical cell used across this platform, so one replacement covers both designations.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the EF3000 Gold collar. The BMS accepted the cell without fault codes, stimulation output engaged normally, and the charge circuit brought the cell to full voltage without thermal events.
• Collar stimulation output after reinstallation: If the collar was left depleted for an extended period, the stimulation and tone functions may not respond immediately after reinstall. Allow a full charge cycle to complete before testing output levels — the protection circuit needs a complete charge to re-establish correct operating thresholds.

Why the EF3000 Gold collar shows no stimulation output after a battery swap

The EF3000 Gold uses an internal protection circuit that monitors cell voltage before enabling the stimulation output stage. If the replacement cell ships at a low state of charge — common with Li-Polymer cells stored in transit — the collar's controller may read insufficient voltage and hold the output stage inactive. This is not a collar fault. Connect the collar to the OEM charger and allow it to reach a full charge before testing. Once cell voltage reaches the correct operating threshold, stimulation and tone functions will activate normally.

Collar not responding to the remote transmitter after reinstalling the battery

A power interruption caused by removing the battery can cause the collar to lose its paired link with the transmitter. The collar receiver re-initialises from scratch on first power-up, and the transmitter does not automatically re-establish the link. To fix this, power down both units, then follow the pairing sequence in the EF3000 Gold manual — hold the transmitter and receiver buttons simultaneously until the indicator confirms a link. Confirm the collar responds to a low-level stimulation command before use.