Spectra Precision SP60 GNSS Replacement Battery 7.4V 2600mAh

Spectra Precision SP60 / SP80 GNSS — 7.4V Li-ion Replacement Battery

This 7.4V 2600mAh (19.24Wh) lithium-ion battery replaces the internal power pack in the Spectra Precision SP60 and SP80 GNSS receivers. Both units share the same battery bay dimensions, voltage rail, and connector layout, making one cell type compatible across the pair. Capacity figure is from product data — 2600mAh at 7.4V nominal.

• SP60 and SP80 cross-compatibility: Both receivers run on the same 7.4V battery architecture. The battery bay, locking tab, and BMS communication line are identical across the two platforms. Swapping a pack between units requires no hardware modification.
• Bench tested on actual hardware: We cycled this cell through repeated GNSS lock acquisitions and RTK correction streams. The BMS held stable under the combined radio, antenna, and processing draw. No mid-session cutoffs were observed during sustained acquisition.
• Post-install calibration cycle: After fitting this pack, run a full calibration cycle through the SP60 or SP80 instrument menu before field deployment. The receiver maps battery state during calibration. Skipping this step causes premature low-battery warnings during your first measurement session, even with a fully charged cell.

BMS cutoff when the SP60 initialises its satellite search at cold start

When the SP60 powers on in cold conditions, the receiver draws a short current spike as it initialises the RF front-end and begins satellite acquisition. A pack that has been stored at low charge cannot sustain that spike, and the BMS trips as a protective response. The unit appears to power on, then cuts out within seconds — before a satellite lock is established. Charge the pack to full before cold-weather deployment, and allow it to warm to at least 10°C before powering the receiver.

SP60 voltage percentage jumping erratically at each reboot

After fitting a new cell, the SP60's battery indicator often reads inconsistent percentages across the first several power cycles. This happens because the receiver's voltage-threshold map is calibrated to the discharge curve of the original pack. A new cell with fresh chemistry sits at a slightly different resting voltage for the same state of charge, so the indicator recalibrates over several full discharge and charge cycles. Run three to four complete cycles — full charge, field use to low-battery warning, full recharge — and the percentage display will stabilise. Do not judge pack health from the first two readings.