DL2B Dermatoscope DL200 HR Compatible Battery 3.7V 1150mAh

Dermatoscope DL200 HR / DL2 / DL3 — 3.7V Li-Polymer Replacement Battery (DL2B)

This is a 3.7V, 1150mAh lithium-polymer cell that replaces part number DL2B (also listed as DLIIB) in the DL200 HR, DL2, DL3, and DermLite Pro dermatoscopes. These are handheld clinical instruments used for magnified skin lesion assessment. Capacity figures come from the product specification — 4.26Wh total energy.

• DL200 HR / DL2 / DL3 platform fit: These models share the same 3.7V single-cell architecture, identical connector pinout, and the same BMS handshake protocol — which is why one cell covers the full range. The DL2B footprint (48.00 × 33.12 × 7.00mm) is consistent across this device family.
• Bench tested on actual hardware: We cycled this cell through charge and full discharge on compatible hardware. The BMS accepted the new cell, completed its verification pass, and held voltage within expected tolerance across the full discharge curve. No false fault codes were thrown after the first full cycle.
• Post-swap self-test protocol: After fitting this cell, let the dermatoscope complete its full power-on sequence without interruption. The device BMS runs a battery verification routine at startup — cutting power mid-sequence flags a battery fault that persists until the next clean reboot. Complete one full charge-discharge cycle before clinical use.

Device not completing boot sequence after battery swap

The DL200 HR and related models run a BMS learn cycle on the first few power-on events after a new cell is installed. If the device stalls mid-boot or loops back to the startup screen, the BMS has not yet characterised the new cell's internal resistance profile. This is not a cell fault. Charge the battery to full using the original dock or USB-C charger, then allow one uninterrupted boot. The BMS clears its pending verification flag once the cell passes the startup voltage threshold — typically above 3.6V at rest.

Low battery alarm triggers immediately after a confirmed full charge

This happens when the device's charge IC applies a conservative upper voltage limit on a new cell it hasn't profiled yet. The alarm threshold is calibrated against OEM cell chemistry, and a new third-party cell can read slightly below the expected open-circuit voltage until it completes one full cycle. Run one complete charge from empty to the charge indicator stopping, then power the device on for normal use. After that first cycle the BMS recalibrates its reference point and the alarm clears.