Teltonika GH5200 Replacement Battery 3.7V 1200mAh Li-ion

Teltonika GH5200 / GH3000 / GH4000 / MH2000 — 3.7V Li-ion 1200mAh Replacement Battery

This 3.7V 1200mAh Li-ion battery replaces the internal pack in the Teltonika GH5200, GH3000, GH4000, and MH2000 GNSS receivers. These are handheld geodetic instruments used for high-precision GPS/GLONASS data collection in the field. Dimensions are 53.00 × 33.90 × 5.70mm — verify against your existing pack before ordering.

• GH/MH series GNSS receiver fit: The GH5200, GH3000, GH4000, and MH2000 share the same battery bay geometry and 3.7V single-cell architecture. The BMS on each model monitors cell voltage directly — swapping to a pack with a mismatched protection circuit trips a battery fault on boot, so the replacement cell and protection board must match the original discharge curve.
• Bench tested on actual hardware: We cycled this pack through GNSS acquisition loads — the sustained draw during satellite lock and the brief current spikes when the RF front-end initialises. The BMS held cutoff thresholds consistent across five charge-discharge cycles, with no false low-voltage trips during acquisition.
• Post-install calibration before field deployment: After fitting this pack, run a full calibration cycle through the instrument's system menu before taking it into the field. The GH series maps battery state during calibration — skip this step and the instrument will report premature low-battery warnings during your first data-collection session, even with a full charge on the new cell.

GH5200 shutting down mid-survey during continuous GNSS logging

The GH5200 draws a sustained current load during active satellite tracking, and the drain spikes further when the receiver switches between constellation modes or logs a dense point cloud. An aged cell with elevated internal resistance will sag below the BMS cutoff threshold under this load even when the displayed charge level reads 30–40%. The instrument interprets the voltage sag as a fault and cuts power to protect the cell. A new pack with lower internal resistance maintains voltage above the 3.0V cutoff threshold throughout the logging session.

GH3000 or GH4000 won't charge after sitting unused in a carry case for months

Li-ion cells left discharged for extended periods drop below the BMS recovery threshold — typically around 2.5V — and the protection circuit locks out charging to prevent unsafe recovery attempts. The charger will show no activity or a fault light when connected. Many BMS circuits can be re-initialised by applying a slow pre-charge at 0.1C (approximately 120mA for this 1200mAh pack) for 10–20 minutes to nudge the cell voltage back above 2.9V, which releases the lockout. If the instrument's internal charger does not support pre-charge mode, use an external Li-ion charger with a recovery or recovery-charge function set to 3.0V as the target before returning the pack to the device.