About this replacement
Minolta DiMAGE X1 — 3.7V Li-ion Replacement Battery (NP-1)
This is a 3.7V, 820mAh Li-ion cell built to fit the Minolta DiMAGE X1 compact digital camera. It replaces OEM part numbers NP-1, NP-1H, and MBH-NP-1. If your original cell no longer holds a charge or the camera fails to power on, this is the direct swap.
- DiMAGE X1 compatibility: The X1 uses a slim, single-cell 3.7V pack with a three-contact connector that feeds both the imaging sensor and the body electronics. This cell matches that connector layout and voltage rail, so the camera's power management circuit sees it as a known cell type.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the DiMAGE X1 body. The BMS accepted the cell without error flags, and voltage under load stayed stable across the full discharge curve.
- First-use charge cycle on the X1: Insert this cell and run one full charge through the camera body or OEM charger before your first shoot. The X1's battery-remaining indicator calibrates its threshold mapping during that initial cycle — skipping it can cause the display to read inaccurately from the start.
Camera showing dead battery indicator on a partially charged replacement cell
The DiMAGE X1 maps its battery indicator to voltage thresholds tuned for the original NP-1 discharge curve. A new third-party cell may sit at a slightly different resting voltage after shipping, which the camera reads as critically low. This is a calibration state, not a cell fault. Charge the cell fully via the OEM charger or camera body before drawing any conclusions — the indicator typically corrects itself once the BMS has seen one complete charge cycle.
Battery percentage jumping erratically during a shoot
This happens when the camera's voltage-to-percentage mapping doesn't yet match the new cell's discharge curve. The X1 infers remaining capacity from terminal voltage, and a fresh cell discharges slightly differently than a worn original. The reading stabilises after two or three full charge and discharge cycles. If the jumping continues past that point, check that resting voltage off the charger reaches at least 4.1V — anything lower points to an incomplete charge rather than a faulty cell.