Trimble TX5 Total Station Replacement Battery 14.4V 6750mAh

Trimble TX5 — 14.4V Li-ion Replacement Battery (ACCSS6001)

This is a 14.4V 6750mAh lithium-ion replacement battery for the Trimble TX5 3D laser scanner. It fits the TX5 directly using the OEM battery bay and connector. Capacity matches the original ACCSS6001 specification at 97.2Wh.

• TX5 battery bay compatibility: The TX5 uses a keyed multi-pin connector that carries both power and BMS communication data. This pack mirrors the original pin arrangement and voltage profile, so the scanner's onboard battery management system reads charge state correctly without throwing a hardware fault.
• Bench tested on actual hardware: We ran this pack through the TX5's full startup and scan initialisation sequence. The BMS handled the laser and motor spin-up current draw without tripping, and the instrument held stable voltage through sustained scanning cycles.
• Pre-deployment calibration cycle: After fitting this battery for the first time, run a full calibration cycle through the TX5 instrument menu before heading to site. The scanner maps battery state during calibration — skipping it causes premature low-battery warnings during the first measurement session even when the pack is fully charged.

BMS lockout after the TX5 sat unused in a carry case for months

Li-ion cells self-discharge slowly in storage. If the TX5 and its battery sat unused long enough, the cell voltage can drop below the BMS recovery threshold — typically around 2.5V per cell. When that happens, the BMS enters a protective lockout state and the scanner will not power on or accept a charge. The fix is to apply a slow, low-current charge using a compatible charger and hold it there — the BMS needs time to detect the trickle input before it re-initialises. Once the pack climbs back above approximately 10.8V total, the BMS exits lockout and normal charging resumes.

TX5 voltage display jumping or showing inconsistent percentage after reboot

The TX5 tracks battery state against a voltage curve calibrated to the original cells. A new pack has slightly different cell characteristics, so the percentage readout can appear erratic — jumping between values or reading lower than expected during the first few charge cycles. This is the instrument recalibrating its voltage-threshold indicator to the new cell's discharge curve. Run two to three full charge and discharge cycles through normal scanning use. By the third cycle the displayed percentage stabilises and tracks accurately against actual remaining capacity.