Olympus Li-80B Replacement Battery 3.7V 600mAh

Olympus T-100 / X-960 — 3.7V Li-ion Replacement Battery (Li-80B)

This 3.7V, 600mAh Li-ion cell replaces the OEM Li-80B battery in the Olympus T-100 and X-960 compact digital cameras. It powers the imaging sensor, display, and onboard electronics through photo and video capture sessions. Capacity matches the original spec — no modification to the camera body or charger is needed.

• T-100 and X-960 compatibility: Both models run the same Li-80B cell format — identical footprint at 43.70 × 31.30 × 7.00mm, same 3.7V nominal voltage rail, and the same BMS handshake. One cell covers both bodies without any adapter or wiring change.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the T-100 body. The BMS accepted the cell, the battery indicator populated correctly after one full charge cycle via the camera body, and protection circuitry triggered at the correct low-voltage cutoff.
• First-use charge cycle on the T-100: Run the first full charge from within the camera body using your OEM charger or USB port, not an external third-party charger. The T-100's BMS uses that initial charge cycle to map the cell's discharge curve — skipping it can cause the remaining-shots counter to read inaccurately from the start.

Why the T-100 battery indicator jumps or reads zero on a fresh cell

The T-100 maps remaining charge by comparing real-time voltage against a stored discharge curve calibrated to the original cell. A new replacement cell has a slightly different discharge curve shape, so voltage readings at mid-charge don't always land on the expected thresholds. The camera interprets the mismatch as a sudden drop or empty state. Running one complete charge-to-full, shoot-to-low cycle lets the BMS recalibrate and display accurate readings going forward.

Camera showing "no battery" or refusing to power on with a new Li-80B cell installed

This happens when the replacement cell ships at a low storage voltage — typically below 3.0V — and the camera's BMS won't initialise a cell it reads as critically flat. Remove the cell and place it in an OEM Olympus charger for 15–20 minutes to bring it up to approximately 3.2V. Reinsert and power on. If the camera still won't boot, check the cell contacts on both the battery and the compartment terminals for oxidation and clean with a dry cloth.