Minox DCC 5.0 Replacement Battery 3.7V 750mAh Li-ion

Minox DCC 5.0 / DCC 5.1 — 3.7V Li-ion Replacement Battery

This 3.7V 750mAh (2.78Wh) lithium-ion cell replaces the original battery in the Minox DCC 5.0, DCC 5.1, and Digital Classic DCC 5.1 compact digital cameras. The cell matches the original voltage rail and physical dimensions — 46.20 × 34.14 × 5.68mm — so it seats correctly in the battery compartment without modification.

• DCC 5.0 and 5.1 compatibility: Both models share the same battery bay dimensions and 3.7V supply requirement. The charge circuit on these cameras draws from a single-cell Li-ion at a fixed cutoff voltage, so one cell covers both variants without any adapter or wiring change.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the DCC platform and confirmed the protection circuit triggers correctly at both low-voltage cutoff and overcharge thresholds — no thermal event, no false cutoff during normal shooting load.
• First-use power-on after storage: If the camera shows no response on first install, the cell may have dropped below the protection circuit's recovery threshold during warehouse storage. Connect the charger for at least 15 minutes before attempting to power on — this brings the cell above the BMS re-enable floor.

Why the DCC 5.0 shuts off mid-session with charge still showing

The DCC 5.0 reads battery state from terminal voltage, not a coulomb counter. As a Li-ion cell ages, its internal resistance rises. Under the current spike of writing an image to the card or firing the flash, terminal voltage sags below the camera's cutoff threshold even when resting voltage still reads mid-range. The camera interprets this sag as a dead battery and shuts down. A fresh cell with lower internal resistance eliminates the sag and restores consistent operation through high-draw moments.

Camera not recognising charge level correctly after a new cell is fitted

The DCC 5.1's voltage-based fuel gauge was calibrated against the discharge curve of the original cell. A new cell with a slightly different curve can cause the indicator to jump or read incorrectly until it sees a full reference cycle. Run one complete discharge from full to automatic shutoff, then charge uninterrupted to 100%. After that single cycle the camera's gauge reads against the new cell's actual curve and tracks accurately.