Samsung Digimax #1 SB-L0737 Replacement Battery 3.7V 850mAh

Samsung Digimax #1 / Digimax I5 Series — 3.7V Li-ion Replacement Battery (SB-L0737)

This is a 3.7V, 850mAh Li-ion replacement cell for the Samsung Digimax #1 and compatible Digimax compact cameras. It slots into the same battery compartment as the original SB-L0737 / SLB-0737 cell. Voltage and physical dimensions match OEM spec: 40.20 × 35.30 × 6.10mm.

• Digimax compact series compatibility: The Digimax #1, I5, i50 MP3, and L50 share the same battery bay geometry and 3.7V power rail, which is why one cell works across all of them. The BMS in each body reads voltage state — not an authentication chip — so no handshake rejection on these models.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on a Digimax-series body. The BMS accepted the cell on first insertion, reported charge state correctly, and held voltage above 3.5V through the bulk of the discharge curve.
• First-use charge cycle on these bodies: Run one full charge from inside the camera body or OEM charger before shooting. Some Digimax bodies calibrate the battery-remaining indicator on that first cycle — skipping it can cause the display to report empty at 60% and shut down early.

Battery percentage jumping around on the Digimax display

Samsung's Digimax indicator maps battery level against a fixed voltage-threshold table tuned to the original cell's discharge curve. A fresh replacement cell can discharge slightly differently through the mid-range, causing the indicator to skip segments or jump from 50% to empty. This is a calibration mismatch, not a fault in the cell. Run two full charge-discharge cycles through the camera body and the indicator typically stabilises. If it doesn't settle by cycle three, check that resting voltage after a full charge reads 4.1–4.2V at the terminals.

Camera showing dead battery indicator immediately after inserting a charged replacement

This happens when the cell arrives in a partially discharged state from storage and the camera body's low-voltage threshold trips before the BMS can report correctly. The Digimax bodies cut off at around 3.0V and flag it as a dead cell rather than a low one. Remove the battery, charge it fully in the OEM charger or an external Li-ion charger to 4.2V, then reinsert. The indicator should read correctly on the next power-on.