About this replacement
Leica TS01 Total Station — 7.4V Li-ion Replacement Battery (GEB264)
This is a 7.4V 5200mAh Li-ion battery for the Leica TS01 Total Station. It replaces OEM part numbers GEB264 and 945125. The TS01 is a robotic total station used in construction layout, land surveying, and civil engineering fieldwork — battery failure mid-session is not recoverable without a spare.
- TS01 platform fit: The TS01 battery bay accepts a specific connector orientation and BMS handshake protocol. This pack matches the 7.4V cell configuration and communication lines the TS01 expects — a mismatch at either point causes the instrument to flag a battery fault before it even powers on.
- Bench tested on actual hardware: We cycled this pack through the TS01's power-on sequence, EDM module initialisation, and sustained angle-tracking load. The BMS held stable across all three draw phases without tripping into protective cutoff.
- First-use calibration cycle: After installing this pack, run a full calibration cycle through the TS01 instrument menu before field deployment. The instrument maps battery state during that sequence — skipping it causes the low-battery indicator to trigger early on the first measurement session, even with a full charge.
Why the TS01 cuts out when the EDM module initialises
The EDM (electronic distance measurement) module draws a sharp current spike at initialisation — higher than steady-state operating draw. An aged or partially depleted OEM pack can't deliver that burst without voltage sagging below the BMS cutoff threshold. The instrument interprets this as a battery fault and shuts down, even if the display was showing adequate charge seconds before. A fresh pack with full cell capacity handles the spike without voltage collapse.
TS01 not recognising the new pack after the instrument sat unused for months
Li-ion cells self-discharge over storage. If the pack drops below roughly 2.5V per cell, the BMS enters a sleep state to prevent over-discharge damage — and the TS01 won't see a valid battery signal at all. Connect the pack to a charger first and leave it for at least 30 minutes before inserting it into the instrument. Once cells recover to above 3.0V per cell, the BMS wakes, the handshake completes, and the TS01 powers on normally.