About this replacement
Minolta DiMAGE X / Xi / Xt Series — 3.7V Li-ion Replacement Battery (NP-200)
This is a 3.7V, 750mAh Li-ion cell built to the NP-200 spec. It fits the Minolta DiMAGE X, DiMAGE Xi, DiMAGE Xt, and DiMAGE Xt Biz compact digital cameras. Slide it into the same battery bay as the original and you're back to shooting.
- DiMAGE X-series platform fit: All four models share the same NP-200 form factor, connector polarity, and 3.7V rail. The BMS in each body reads the same charge state signals, so one cell covers the entire lineup without adapter or modification.
- Bench tested on actual hardware: We cycled this cell through the DiMAGE X body using the OEM charger. The BMS accepted the cell on the first charge pass, reported charge state correctly, and held voltage above 3.5V through full discharge under combined lens, sensor, and processing load.
- First-use charge protocol for the DiMAGE X body: Run the initial charge inside the camera body or OEM charger — not a third-party universal charger. The DiMAGE X BMS maps battery-remaining percentage during that first cycle. Skipping this step can cause the indicator to read inaccurately from the start.
Dead battery indicator on the DiMAGE X with a partially charged replacement cell
The DiMAGE X reads battery level by comparing cell voltage against a fixed threshold map written for the original NP-200 discharge curve. A new third-party cell can sit at 3.6V — well above dead — and still trigger the low-battery warning if its resting voltage doesn't match the body's expected threshold at that state of charge. This is a calibration mismatch, not a faulty cell. Run one full charge-to-discharge cycle through the camera body. After that cycle, the indicator tracks the new cell's actual voltage curve correctly.
Battery percentage jumping erratically during a shoot
If the percentage display jumps — say, from 60% to 20% and back — the camera's fuel gauge is losing track of where it is on the discharge curve. This happens when the replacement cell's discharge slope differs slightly from the OEM cell the firmware was tuned for. The camera recalculates state of charge each time it samples voltage, and small differences in internal resistance cause big swings in the reading under load. Complete two full charge cycles via the OEM charger; after the second cycle most DiMAGE X bodies stabilise the readout to within a few percentage points.