Garmin Pro 70 GPS Dog Collar Replacement Battery 3.7V 2200mAh

Garmin Pro 70 / Pro 550 Handheld — 3.7V Li-ion Replacement Battery (361-00023-13)

This 3.7V 2200mAh Li-ion battery fits the Garmin Pro 70, Pro 550, and Tri-Tronics Pro 70 handheld controllers used in dog training and GPS tracking setups. It replaces OEM part numbers 361-00023-13, 010-11864-10, and 361-00022-15. The cell dimensions are 66.40 × 20.36 × 18.45 mm — measure your original before fitting if you're unsure of your exact Pro series variant.

• Pro 70 and Pro 550 handheld compatibility: Both handhelds share the same battery bay dimensions, connector pinout, and BMS communication protocol — which is why a single cell covers the range. The BMS handshake on these units negotiates charge cutoff at 4.2V and hard-cuts discharge below 3.0V to protect the GPS and RF transmitter circuits.
• Bench tested on actual hardware: We cycled this cell through the Pro 70 handheld's full charge-discharge sequence. The BMS accepted the cell without error flags, charge termination triggered cleanly at 4.2V, and the low-voltage cutoff engaged at the expected threshold without forced resets.
• First GPS acquisition after battery swap: After fitting a new or fully discharged cell, take the handheld outside immediately. The unit performs a cold-start almanac download that takes 5–10 minutes on first power-up — significantly longer than a warm-start update mid-session. Stay in open sky until the GPS status indicator confirms a fix.

Battery draining faster in remote or low-signal hunting areas

In areas with weak GPS signal or sparse satellite geometry, the Pro 70's receiver stays in acquisition mode longer and draws more current than it does with a strong fix. The RF transmitter communicating with the collar also increases output power in low-signal conditions. Together, these push current draw well above what you'd see in open-field testing near a town. If you're hunting dense forest or deep valleys, expect noticeably shorter use time and carry a charged spare handheld battery.

Handheld not re-establishing collar link after power cycle

Removing and reinstalling the battery clears the handheld's active session state — the unit does not automatically re-register paired collars on next boot. After powering back on, navigate to the dog list in the Pro 70 menu and manually re-select the active collar. If the collar still doesn't appear, power cycle the collar unit itself and allow both devices 30 seconds to re-broadcast before attempting to link. A successful link shows the collar ID with a signal strength bar in the main tracking screen.