Toshiba Camileo X100 Replacement Battery PA3790U-1CAM 3.7V 1800mAh

Toshiba Camileo X100 / H30 — 3.7V Li-ion Replacement Battery (PA3790U-1CAM)

This 3.7V, 1800mAh Li-ion cell replaces the original battery in the Toshiba Camileo X100 and Camileo H30 digital camcorders. It matches the OEM voltage rail and physical footprint — 53.00 × 35.30 × 11.00mm — so it seats into either body without modification. Capacity is rated at 6.66Wh, in line with the original specification.

• Camileo X100 and H30 compatibility: Both models share the same battery bay dimensions, connector pin-out, and 3.7V nominal voltage rail. The BMS communication protocol is identical across the two bodies, so one cell works in either camera without any firmware difference to handle.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Camileo body. The BMS accepted the cell on first insertion, reported charge state without error flags, and held cutoff voltage at the expected low-end threshold before shutting the body down cleanly.
• First-use charge cycle on the Camileo body: Run the first full charge from within the camera body or the OEM charger rather than a third-party USB charger. The Camileo BMS maps its battery-remaining display against a charge profile it reads on that first cycle — skipping this step can cause the indicator to jump or read inaccurately from the start.

Why the Camileo X100 displays a dead-battery icon on a partially charged replacement cell

The Camileo body maps its battery gauge against a discharge curve it calibrates from the first charge cycle. A new cell fresh out of packaging carries a partial state of charge that doesn't match the camera's stored reference curve, so the indicator reads low or shows empty even when the cell has usable voltage. This is a calibration mismatch, not a fault with the cell. Charge the battery to full via the camera body or OEM charger once, then discharge it through normal use. After one complete cycle the gauge tracks correctly.

Battery percentage jumping erratically during recording on the X100

During sustained video recording, the Camileo X100 pulls current from the sensor, processor, and autofocus system simultaneously. That combined draw causes the cell voltage to sag briefly under load, and the camera's voltage-threshold gauge interprets the sag as a large drop in remaining charge. When load eases — during pause or playback — voltage recovers and the percentage jumps back up. This is normal behaviour with a single-cell 3.7V pack under variable load. If the jumps persist across a fully calibrated cell, check that the battery contacts on the body are clean and making firm contact; oxidised contacts increase resistance and worsen the sag.