Garmin Pro 70 Replacement Battery 3.8V 3000mAh 361-00023-13

Garmin Pro 70 / Pro 550 Handheld — 3.8V Li-ion Replacement Battery (361-00023-13)

This 3.8V, 3000mAh Li-ion battery fits the Garmin Pro 70 and Pro 550 handheld GPS dog tracking units, along with the Tri-Tronics Pro 70 platform. It replaces OEM part 361-00023-13 and 010-11864-10. Capacity listed is from product data — 3000mAh (11.4Wh).

• Pro 70 and Pro 550 handheld compatibility: Both handhelds share the same 3.8V cell format, connector pinout, and BMS handshake protocol — that's why one battery covers the full platform. The pack communicates state-of-charge data back to the unit's display over the same communication line.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a Pro 70 handheld. The BMS responded correctly to the unit's charge termination signals, and state-of-charge reporting on the display stayed accurate across the full discharge curve.
• First GPS acquisition after install: After fitting the battery, take the handheld outside and give it 5–10 minutes for a cold-start GPS fix. The unit lost its almanac data during the power interruption, so the first satellite acquisition takes longer than a normal warm start in the field.

Why the Pro 70 drains faster during active tracking in low-signal areas

In areas with weak GPS coverage — dense tree canopy, deep valleys, or remote rural terrain — the handheld polls satellites more aggressively to maintain a fix, pulling higher sustained current from the pack. At the same time, if the unit is transmitting correction data or alerts back to a collar, that radio link adds to the draw. This compounds quickly in back-country conditions compared to open-field use. Expect noticeably shorter battery life in active continuous-tracking mode versus periodic reporting intervals.

Pro 70 handheld shows no dog location after battery swap

After a power interruption, the Pro 70 loses its cached GPS almanac and must rebuild satellite position data from scratch — this is a cold start, not a fault. The unit will display searching or no signal for several minutes while it reacquires. Take the handheld outdoors with a clear view of the sky and wait up to 10 minutes before assuming the battery or GPS module has a problem. Once the first fix locks, subsequent warm-start acquisitions will return to normal speed.