Topcon Hiper Pro 7.4V Replacement Battery 24-030001-01

Topcon Hiper Pro / Hiper Lite Plus Series — 7.4V Li-ion Replacement Battery (24-030001-01)

This 7.4V 4400mAh Li-ion battery replaces OEM part 24-030001-01 in Topcon GNSS receivers. It fits the Hiper Pro, Hiper Lite Plus, Hiper-L1, Hiper Ga, and six additional models in the same family. Same voltage, same capacity, same connector orientation as the factory pack.

• Hiper series cross-compatibility: These receivers share a common 7.4V power rail, connector footprint, and BMS handshake protocol across the Hiper Pro, Hiper Lite Plus, Hiper-L1, and Hiper Ga. One pack fits all without firmware conflicts or charge indicator errors.
• Bench tested on actual hardware: We ran this pack through a full charge and discharge cycle on a Hiper Pro unit. The BMS accepted the charge handshake immediately, the receiver reported accurate state-of-charge, and thermal sensors registered no anomalies under sustained GNSS tracking load.
• Post-install calibration cycle: After fitting a new pack, run a full calibration sequence through the Hiper instrument menu before heading to site. The receiver maps battery state during that cycle — skipping it causes the low-battery warning to fire early on your first measurement session, even with a fully charged pack.

BMS cutoff when the Hiper Pro initialises its satellite tracking module

At power-on, the Hiper Pro's RF front-end and satellite tracking module draw a sharp current spike lasting roughly one second. On a degraded or deeply discharged cell, that spike can push the pack below the BMS protection threshold, triggering an immediate cutoff before the receiver finishes booting. This is not a firmware fault — it is the BMS doing exactly what it should. A fresh cell with full capacity absorbs the startup surge without voltage collapsing far enough to trip the threshold. If cutoff keeps occurring after a confirmed full charge, check that the battery contacts on the receiver bay are clean and making solid contact.

Hiper receiver powers on but shuts down mid-USB data transfer to PC

USB data transfer to the office PC adds a second load on top of active GNSS processing — the receiver's CPU, radio module, and USB controller all draw simultaneously. On a partially discharged pack, the combined draw causes voltage to sag below the operating threshold, and the receiver shuts off before the transfer completes. This is not a USB driver issue. Charge the pack to full before starting any post-field data offload, and confirm the receiver's battery indicator shows at least two bars before initiating the transfer. Full charge sits at 8.4V at the pack terminals.