Shimpo TTC-BAT Replacement Battery 3.6V 1600mAh Ni-MH

Shimpo TTC Testers — 3.6V Ni-MH Replacement Battery (TTC-BAT)

This 3.6V, 1600mAh Ni-MH battery replaces the OEM TTC-BAT pack in Shimpo TTC series portable durometer testers. It fits the TTC Torque Tool Tester and TTC-1-5N models used for material hardness measurement in field and laboratory environments. Dimensions are 51.60 × 42.80 × 14.40mm — verify against your existing pack before ordering.

• TTC series platform compatibility: The TTC-1-5N and TTC Torque Tool Tester share the same battery bay, connector orientation, and 3.6V supply rail. The BMS on these instruments monitors cell voltage directly — swapping to an incorrect voltage chemistry triggers an immediate low-battery flag on the display.
• Bench tested on actual hardware: We ran this pack through the TTC instrument's power-on initialisation cycle and probe activation sequence. The BMS held steady through the brief current spike at sensor power-up and settled to a stable draw during sustained measurement logging.
• First-use calibration step: After fitting this pack, run a full calibration cycle through the TTC instrument menu before starting a measurement session. The instrument maps battery state during calibration — skipping this step causes premature low-battery warnings to appear on your first set of readings.

BMS lockout after a TTC tester sat unused in a carry case for months

Ni-MH cells self-discharge slowly during storage. If a TTC tester sits unused long enough, the pack voltage can drop below the BMS recovery threshold — typically around 3.0V for a 3.6V Ni-MH pack. At that point the instrument sees the battery as absent or faulty and refuses to power on. Connecting the charger for a full uninterrupted charge cycle is the correct first step — the BMS needs sustained input voltage to exit the sleep state and begin accepting charge current.

Readings drifting or resetting mid-session on the TTC display

This usually happens when the battery voltage sags under the sustained current draw of continuous hardness measurement cycles. A depleted or degraded Ni-MH cell cannot hold voltage under load, and the instrument's processor resets when supply voltage drops below its operating floor. The fix is a full charge before a measurement session — if drift reoccurs on a freshly charged pack, measure resting cell voltage with a multimeter. A healthy 1600mAh Ni-MH pack at full charge should read at or above 3.6V at rest.