Garmin Pro 70 Handheld Replacement Battery 3.7V 3400mAh

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

This 3.7V 3400mAh Li-ion battery fits the Garmin Pro 70 and Pro 550 handheld remote control units used for dog training systems. It replaces OEM part 361-00023-13 and 010-11864-10. Capacity figure is taken from product data — 12.58Wh total energy.

• Pro 70 and Pro 550 handheld compatibility: Both handhelds share the same battery bay dimensions, voltage rail, and connector pinout. The BMS handshake on each unit accepts cells within the same voltage window, so one replacement covers the full range listed above.
• Bench tested on actual hardware: We cycled this cell through the Pro 70 handheld's charge circuit and confirmed the BMS accepted the cell without fault flags, reached full charge termination cleanly, and held resting voltage at 4.18V after a 2-hour settle.
• First-use GPS acquisition tip: After fitting this battery and powering on, take the handheld outside and hold it clear of obstructions for 5–10 minutes. The unit performs a cold-start GPS acquisition after any power interruption — this takes longer than a warm-start and the remote will not display collar position until the fix completes.

Why the Pro 70 remote loses collar contact in low-signal rural areas after a battery swap

The Pro 70 handheld uses RF communication to the collar alongside GPS positioning — both subsystems draw from the same cell simultaneously. In rural or dense-cover areas, the RF transmitter and GPS receiver both increase duty cycle trying to maintain lock, pulling higher average current than open-field use. A cell with reduced capacity handles this combined load for less time before voltage sags below the BMS cutoff threshold. If contact drops sooner than expected after the swap, check that the replacement cell is reading above 3.6V resting before use — a partially discharged cell won't survive the peak draw of simultaneous RF and GPS bursts.

Handheld screen shows "No Device Found" immediately after powering on with a new battery

This error appears when the Pro 70 handheld loses its paired collar registration during a full power interruption — the pairing data is held in volatile memory that clears when the battery is removed. It is not a fault with the replacement cell. Re-enter the collar's pairing sequence via the handheld's device setup menu; the unit will re-register the collar over RF within range. Confirm the collar is powered on and within 10 metres during the re-pair step.