Traveler NP-900 Replacement Battery 3.7V 600mAh Li-ion

Traveler Super Slim XS7 / Slimline Series — 3.7V Li-ion Replacement Battery (NP-900)

This is a 3.7V, 600mAh Li-ion cell for Traveler compact digital cameras — specifically the Super Slim XS7, Slimline X4, Slimline X6, and DC-5080. It replaces OEM part numbers NP-900, 02491-0015-00, BATS4, and 02491-0037-00. The cell measures 43.70 × 31.30 × 7.00mm and slots into the same battery compartment as the original.

• Shared platform across Slimline models: The Super Slim XS7, Slimline X4, and Slimline X6 all use the same compact battery bay and 3.7V voltage rail. One cell covers all three bodies because the BMS threshold and connector pinout are identical across this Traveler line.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles and confirmed the BMS accepted the cell without a protection-circuit trip. Voltage under load held within expected range for a 600mAh Li-ion at 3.7V nominal.
• First-install charge cycle on these camera bodies: Insert the cell and run a full charge inside the camera body or OEM charger before shooting. Some Traveler BMS firmware maps the battery-remaining indicator to the new cell's discharge curve only after that first in-body charge cycle completes.

Dead battery indicator on the XS7 display with a partially charged replacement cell

The Super Slim XS7 battery indicator reads voltage at rest against a fixed threshold table calibrated to the original cell's discharge curve. A new third-party cell may sit at 3.6V resting — technically partial charge — but still trigger the low-battery icon if the camera's threshold table expects a higher resting voltage at that state of charge. This is a calibration mismatch, not a dead cell. Run one complete charge cycle in the camera body or OEM charger. After that cycle the display typically re-maps and shows an accurate level.

Flash taking longer to recycle between shots after switching to a new cell

Flash recycling speed depends on how fast the capacitor can draw recharge current from the cell. A new Li-ion cell at less than full charge has higher internal resistance, which limits that current draw and slows the recycle. This effect is most noticeable in the first few cycles of a fresh cell before the electrolyte is fully conditioned. Charge the battery to 100% before a flash-heavy shoot and the recycle lag drops back to normal.