About this replacement
Ocean EV0200 — 3.7V Li-Polymer Replacement Battery (HPP452030)
This is a 3.7V, 440mAh Li-Polymer cell replacing part number HPP452030 in the Ocean EV0200 digital camera. It fits the EV0200 body directly, restoring power to the camera's imaging and operation functions. Voltage and capacity match the original OEM specification.
- EV0200 fit: The EV0200 uses a compact 31 × 20 × 4mm Li-Polymer cell with a 3.7V nominal rail. This replacement matches those dimensions and the BMS voltage thresholds the camera body monitors to enable shooting functions.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on a Li-Polymer test rig. The BMS held charge acceptance at 4.2V and cut off discharge at the low-voltage floor without tripping a fault state.
- First-cycle initialisation on the EV0200: Run one complete charge cycle through the OEM charger or camera body before heavy shooting. Some camera BMS systems only calibrate the battery-remaining display after reading a full charge curve from a recognised source — skipping this step can cause the indicator to read incorrectly from the first shot.
Camera showing dead battery indicator on a partially charged replacement cell
The EV0200's fuel gauge maps voltage steps to a discharge curve stored in firmware. A new Li-Polymer cell's discharge curve can sit slightly outside that stored reference during the first few cycles, causing the indicator to report empty when the cell still holds charge. This is a calibration mismatch, not a faulty cell. Run two full charge-to-discharge cycles in the camera body and the indicator will track accurately against the new cell's actual curve.
Battery percentage jumping erratically on the EV0200 display
Erratic percentage jumps happen when the camera's voltage-to-percentage lookup table doesn't match the new cell's discharge slope. Li-Polymer cells from different manufacturers have slightly different mid-discharge voltage plateaus, which throws off the camera's estimate at certain charge levels. The jump is most visible between 60% and 30% on the display. Charge fully to 4.2V via the OEM charger, then discharge in one uninterrupted session — repeat twice to let the BMS re-map its thresholds against the actual cell behaviour.