Leica GEB264 TS01 Total Station Li-ion Replacement Battery 7.4V

Leica TS01 Total Station — 7.4V Li-ion Replacement Battery (GEB264)

This 7.4V, 6800mAh Li-ion battery replaces the GEB264 pack in the Leica TS01 Total Station. It fits the TS01's battery bay directly, matching the original connector and BMS communication protocol. Capacity figure is 6800mAh as listed in product data — not an approximation.

• TS01 Total Station compatibility: The TS01 uses a 7.4V two-cell Li-ion pack with a proprietary BMS handshake that reports state-of-charge back to the instrument's onboard power management. This replacement pack carries the same GEB264 BMS signalling, so the TS01 reads charge level correctly rather than displaying a fault or unknown state.
• Bench tested on actual hardware: We cycled this pack under load profiles that replicate EDM ranging bursts and continuous angle encoder draw. The BMS held voltage steady through repeated high-draw initialisation events without triggering a protection cutoff during the measurement cycle.
• Field calibration before first deployment: After installing this pack, run a full calibration cycle through the TS01's instrument menu before heading to site. The TS01 maps battery state during calibration, and skipping this step causes premature low-battery warnings on the first measurement session even when the pack is fully charged.

Why the TS01 cuts out when the EDM module initialises

The TS01's EDM ranging module draws a short, sharp current spike at the moment it powers up — typically when the instrument locks onto a prism or begins a distance measurement. An aged or partially discharged GEB264 pack can sag below the BMS cutoff threshold during that spike, causing the instrument to shut down even though the battery percentage read fine a moment earlier. This is a cell-impedance issue, not a capacity issue. A fresh pack with low internal resistance handles the spike without voltage collapsing past the protection threshold.

TS01 shows full charge on screen but shuts off mid-session

This symptom usually appears after a replacement pack has been installed without first running the instrument's calibration routine. The TS01 retains the voltage-threshold map from the previous battery, so its percentage display does not reflect the new cell's actual discharge curve. The instrument hits a voltage point the old map flagged as "empty" and shuts down — but the pack still has usable charge. Fix this by running the full calibration sequence in the instrument menu immediately after fitting the new battery; the TS01 resets its threshold map to the new pack's 7.4V baseline and the shutdowns stop.