Panasonic DS-1 Replacement Battery 7.4V 2600mAh Li-ion

Panasonic DS-1 / DS-5 / DS-100 / DX-1 Series — 7.4V Li-ion Replacement Battery

This 7.4V, 2600mAh Li-ion cell replaces the original battery in the Panasonic DS-1, DS-5, DS-100, DX-1, and compatible compact digital camera models. It matches the original voltage rail and physical footprint, so it seats in the battery compartment without modification. Capacity is rated at 19.24Wh.

• DS / DX series compatibility: These models share the same battery bay dimensions, 7.4V nominal rail, and BMS handshake protocol. One cell covers the full range listed without adapter or rewiring.
• Bench tested on actual hardware: We cycled this cell through the DS-1 body and monitored BMS communication, charge acceptance, and cutoff behavior. The protection circuit held cutoff within spec at both ends of the discharge curve.
• First-cycle charge in the camera body: On initial install, run one full charge cycle through the camera body or OEM charger before heavy shooting. Some Panasonic compact BMS systems need that first in-body charge to calibrate the battery-remaining indicator accurately.

Dead battery indicator showing on a partially charged replacement cell

Panasonic compact cameras map battery percentage to a voltage-threshold table stored in the body firmware. A new third-party cell has a slightly different discharge curve than the original, so the camera reads voltage at an unexpected point and flags low battery prematurely. This is not a fault in the cell — it is a calibration mismatch on first use. Run the cell down fully, then charge it to 100% in the camera body. After one complete cycle, the indicator typically tracks correctly against the actual charge state.

Camera body warm during sustained video recording

The DS-1 pulls current from the battery across the image sensor, processor, and any active stabilisation simultaneously during video. Combined draw during continuous recording is meaningfully higher than still-capture draw. When ambient temperature is already elevated, that current load raises both the cell and body temperature. If the body feels hot to the touch, pause recording and let both the body and cell cool before resuming — sustained heat above 45°C accelerates cell wear and can trigger BMS thermal cutoff, dropping the camera mid-clip.