Jenoptik EasyShot JD 5.3z3 Compatible Battery 3.7V 850mAh

Jenoptik EasyShot JD 5.3z3 / JD 7.3z3 — 3.7V Li-ion Replacement Battery

This 3.7V 850mAh lithium-ion cell replaces the original battery in the Jenoptik EasyShot JD 5.3z3 and JD 7.3z3 compact digital cameras. It fits the same battery compartment footprint at 40.20 × 35.30 × 6.10mm. When the original cell no longer holds a charge, this replaces it directly.

• JD 5.3z3 and JD 7.3z3 shared battery platform: Both models draw from the same 3.7V cell architecture and use the same physical form factor. One cell covers both cameras without modification.
• Bench tested on actual hardware: We cycled this cell through the camera body and a compatible external charger. The BMS accepted the charge curve without interruption and the camera powered on normally across multiple charge and discharge cycles.
• First charge via camera body: Charge this cell inside the camera body before shooting. Some compact camera BMS systems only map battery-remaining display accurately after completing the first charge cycle from within the body itself — not from an external charger alone.

Battery percentage jumping on the EasyShot display after fitting a new cell

The EasyShot JD series maps battery percentage against voltage thresholds calibrated to the original cell's discharge curve. A new cell discharges at a slightly different rate, especially in the mid-range, which causes the indicator to skip or jump between levels. This is a display mapping issue, not a fault with the replacement cell. Running one full charge and discharge cycle through the camera body re-anchors the threshold mapping to the new cell's actual curve.

Camera showing dead battery icon immediately after installing a charged replacement

This happens when a replacement cell arrives partially discharged and the camera's low-voltage cutoff triggers before the cell can deliver a stable reading. The EasyShot BMS will reject a cell sitting below approximately 3.0V on insertion. Place the battery in an external charger first, bring it to full charge, then reinsert it. The camera should power on normally once the cell is above the minimum acceptance threshold.