NiKon Nivo C Total Station Replacement Battery 3.7V 6400mAh

NiKon Nivo C / Nivo M Total Station — 3.7V Li-ion Replacement Battery (890-0084)

This 3.7V Li-ion cell delivers 6400mAh (23.68Wh) to the NiKon Nivo C and Nivo M Total Station series. It fits the Nivo 1C and Nivo 2C and eleven additional confirmed models. The cell is a direct swap for OEM part numbers 890-0084, 890-0084-XXQ, 53708-00, 53708-PRN, 993251-MY, and 108571-00.

• Nivo series platform fit: The Nivo C, Nivo M, Nivo 1C, and Nivo 2C all share the same 3.7V single-cell architecture, connector pinout, and BMS handshake protocol. One pack covers the full platform.
• Bench tested on actual hardware: We cycled this pack through instrument power-on, EDM activation, and sustained angle-logging sequences. The BMS held stable across the full load profile without triggering overcurrent cutoff during EDM burst draws.
• Post-install calibration on the Nivo series: After fitting, run a full calibration cycle through the instrument menu before going into the field. The Nivo series maps battery state during calibration — skipping this step causes premature low-battery warnings during the first measurement session even when the pack is fully charged.

BMS cutoff when the EDM module fires on the Nivo C

The Nivo C's EDM (electro-optical distance measurement) module draws a sharp current spike the instant it initialises a measurement. On a degraded or deeply discharged cell, that spike can push instantaneous draw past the BMS overcurrent threshold, causing an immediate shutdown mid-shot. This pack's cell is rated for the peak pulse current the EDM module demands. If you see shutdowns specifically at the moment a distance measurement fires — not during standby — the original cell has likely degraded below the spike threshold rather than overall capacity running low.

Pack will not charge after the instrument sat unused for months

Li-ion cells that drop below approximately 2.5V enter a deep-discharge state that causes most chargers to refuse the pack entirely — the charger detects a fault voltage and stops the charge cycle before it starts. The BMS on the Nivo series packs also enters a protection lockout at this threshold. To recover, place the pack in the OEM charger and hold it there for 20–30 minutes without removing it — most OEM chargers apply a low-rate precharge trickle at around 0.1C to bring the cell back above 3.0V before switching to normal charge mode. If the charger LED does not change state within 45 minutes, the cell has passed the recovery window and needs replacement.