Olympus PS-BLM1 7.4V Replacement Battery for C-8080 Camera

Olympus C-8080 Wide Zoom / Evolt Series — 7.4V Li-ion Replacement Battery (PS-BLM1)

This is a 7.4V, 1500mAh Li-ion cell built to the PS-BLM1 spec. It fits the Olympus C-8080 Wide Zoom alongside the Evolt E-3, E-300, and E-330 bodies, plus eight additional Olympus models. Slot it in where the original BLM-1 sits and the camera powers on without configuration changes.

• Cross-body compatibility on the Evolt platform: The E-3, E-300, E-330, and C-8080 Wide Zoom all draw from the same 7.4V rail and use an identical BLM-1 form factor with the same connector orientation and BMS handshake protocol — one cell works across the entire range.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a C-8080 Wide Zoom body. The BMS accepted the cell without rejection flags, voltage delivery stayed stable through continuous burst sequences, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• First-cycle initialisation on Evolt bodies: Complete one full charge cycle using the original Olympus charger or inside the camera body before a heavy shoot. Evolt-series BMS firmware maps battery-remaining percentage against a discharge curve it builds on the first cycle — skipping this step causes the indicator to read inaccurately from the start.

Flash recycling slowdown mid-shoot on the C-8080 Wide Zoom

The C-8080's built-in flash pulls a high recharge current burst from the battery each time it fires. As cell voltage sags toward the lower end of the discharge curve, the capacitor takes longer to reach full charge between shots. This shows up as an increasing recycle delay — not a flash failure, just the cell working harder. Keeping the battery above 7.0V under load eliminates most of the lag.

Battery percentage jumping erratically on the display after fitting a new cell

The Evolt and C-8080 BMS maps voltage thresholds to a discharge curve it calibrated against the original cell. A new cell with a slightly different internal resistance profile reads against that old map, causing the indicator to skip segments or drop suddenly. This is a firmware mapping mismatch, not a fault with the cell. Run two full charge-discharge cycles inside the camera body and the display will stabilise as the BMS recalibrates its curve to the new cell.