Pentax DA020F Replacement Battery 7.4V 2200mAh

Pentax DA020F — 7.4V Li-ion Replacement Battery

This is a 7.4V, 2200mAh Li-ion battery for the Pentax DA020F digital camera. It powers the imaging sensor, LCD display, and onboard processing functions during photography and video recording. No OEM part number is published for this model — this pack is matched by voltage, capacity, and connector specification.

• DA020F power rail: The DA020F runs its sensor readout, display backlight, and processing stack from a single 7.4V Li-ion cell pair. Any voltage drop below the BMS cutoff threshold shuts the camera down immediately — even with charge remaining on the indicator.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge sequences, monitoring BMS cutoff behaviour under sustained sensor load. The pack held steady voltage through display-on and high-write bursts without tripping the protection circuit.
• First-use calibration for the DA020F: After fitting this pack, run the camera through a full charge cycle, then shoot until the battery indicator reaches one bar before recharging. The DA020F maps cell voltage thresholds on early cycles — skipping this causes the low-battery warning to fire well above the actual depletion point.

Why the DA020F cuts out immediately when writing large files to card

During high-speed card writes, the DA020F draws current simultaneously from the processor, card interface, and sensor buffer. On a degraded or cold battery, this combined spike can pull cell voltage below the BMS protection threshold for a fraction of a second — enough to trigger a hard shutoff. A fresh pack at full charge handles this draw without voltage sag. If you see shutoffs specifically during burst shooting or video saves, charge the pack to 8.4V before the next session.

DA020F battery indicator jumping from 50% to empty with no warning

The DA020F reads battery state from cell voltage, not a tracked charge counter. When a new pack is installed, the camera's voltage-to-percentage mapping is calibrated against its previous battery — so early readings on a fresh cell can be inaccurate. This causes the indicator to show a sudden drop that does not reflect actual charge. Run two full charge-discharge cycles and the indicator will recalibrate to the new cell's voltage curve.