About this replacement
Crestron TST-600 / TST-602 — 3.7V Li-ion Replacement Battery (TST-600-BTP)
This 3.7V 3200mAh Li-ion battery replaces the original TST-600-BTP cell in the Crestron TST-600 and TST-602 wireless touchscreen remotes. These remotes control lighting, HVAC, and A/V systems in Crestron automation setups. If your touchscreen remote has stopped holding a charge or powers off unexpectedly, this is the cell that needs replacing.
- TST-600 and TST-602 compatibility: Both models share the same single-cell 3.7V battery bay, connector pinout, and BMS handshake logic — one part number covers both touchscreen variants without modification.
- Bench tested on actual hardware: We cycled this cell through the TST-600 charge circuit and confirmed the onboard BMS accepted the cell, balanced charge termination correctly, and did not trigger a protection cutoff during standby draw.
- Touchscreen remote storage tip: If the TST-600 or TST-602 is left undocked and idle for several weeks, the cell can drop below the BMS re-enable threshold. Place the remote back on its charging dock and leave it connected for at least two hours before attempting to power on.
Why the TST-600 shows a charging indicator but won't power on after a new battery install
The TST-600 uses a protection circuit that requires the cell voltage to reach a minimum threshold before the touchscreen will boot — typically around 3.0V. A new cell shipped in storage state may sit below that threshold even though the dock registers a connection. The dock will show charging activity, but the unit stays dark until the cell climbs above the boot floor. Leave the remote on the dock for 30–60 minutes before pressing the power button; the charge circuit will bring the cell up to boot voltage without any manual intervention.
TST-600 touchscreen response becomes sluggish or intermittent before the low-battery warning appears
The touchscreen controller and Wi-Fi radio in the TST-600 both draw from the same cell. As cell voltage sags under combined load, the processor may throttle or miss touch inputs before the battery icon changes. This often gets misread as a firmware or screen fault. Check cell voltage directly — if it reads below 3.5V under load, the cell is the cause, not the software. Replace the battery and retest responsiveness before attempting any firmware reload.