About this replacement
Samsung Galaxy K Zoom / SM-C115 — 3.8V Li-ion Replacement Battery (EB-BC115BBC)
This is a 3.8V, 2000mAh Li-ion cell built to replace the original battery in the Samsung Galaxy S5 Zoom and Galaxy K Zoom (SM-C111, SM-C115). Both devices combine a smartphone platform with a 10x optical zoom camera module, drawing current across the sensor, processor, and optical image stabilisation simultaneously. Voltage and connector match the OEM spec exactly.
- S5 Zoom and K Zoom compatibility: These two models share the same battery bay, connector, and BMS handshake protocol. The EB-BC115BBC and EB-BC115BBE part numbers are interchangeable across the SM-C111 and SM-C115 variants — same cell, different market suffix.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a K Zoom body. The BMS accepted the cell without fault flags, and the protection circuit tripped correctly at the low-voltage threshold before the display went dark.
- First-cycle charge via OEM charger: Insert the new cell and run one full charge cycle through the camera body or OEM charger before shooting. The K Zoom's battery-remaining display maps voltage thresholds from within a charge cycle — skipping this step can cause the indicator to read inaccurately from the first shot.
Why the K Zoom drains faster during optical zoom than still shooting
The K Zoom's lens motor, OIS actuator, and image processor all pull current at the same time when you use the optical zoom. This combined draw is significantly higher than a standard smartphone or a fixed-lens camera. A 2000mAh cell under that load sees effective capacity drop faster than the shot-count spec suggests. Keeping zoom movement deliberate — rather than continuously sweeping — reduces the peak current spikes that stress the cell most.
Battery percentage jumping or freezing on the K Zoom display after replacement
The K Zoom maps its battery indicator to a voltage discharge curve calibrated during charge cycles recorded in the BMS. A new cell has no charge history logged, so the indicator can jump from 80% to 40% or freeze mid-discharge. This is not a faulty cell — it is the BMS recalibrating. Run two full charge-to-discharge cycles through the camera body and the percentage reading will stabilise to match the actual cell state. After the second cycle, check that resting voltage reads between 3.8V and 4.1V when the indicator shows above 50%.