Sony D-VE7000S Replacement Battery 7.4V 2400mAh Li-ion

Sony D-VE7000S — 7.4V Li-ion Replacement Battery (4/UR18490)

This 7.4V, 2400mAh Li-ion battery replaces the original pack in the Sony D-VE7000S portable DVD player. It fits the OEM part numbers 4/UR18490 and LIS4095HNP. When the original cell degrades and the player stops holding charge away from a wall outlet, this is the direct swap.

• D-VE7000S platform fit: The D-VE7000S uses a two-cell 7.4V pack wired to a BMS that monitors cell balance and temperature. Both OEM part numbers reference this same physical configuration — same connector pinout, same protection circuit handshake. No firmware pairing required.
• Bench tested on actual hardware: We ran the pack through full charge and discharge cycles on a D-VE7000S unit. The BMS accepted charge from the device's onboard charger without fault. Cell balance stayed within spec across multiple cycles, and thermal cutoff did not trip under normal combined disc-plus-display load.
• Charging load management on the D-VE7000S: Avoid charging this battery while actively playing a disc. The disc motor, display backlight, and charging circuit all draw current simultaneously, which raises pack temperature. The onboard thermal protection will throttle performance before it trips — charge with the player idle to keep the battery within its thermal window.

Disc not spinning on a freshly installed battery

The disc motor on the D-VE7000S pulls a sharp current spike at startup — enough to drag cell voltage below the BMS low-voltage threshold if the pack is at storage charge. The BMS interprets this as a fault and cuts output before the spindle reaches speed. The disc stalls or the player shows a read error immediately. Fully charge the battery before the first use — the pack ships at around 3.7V per cell, and the motor needs the full 7.4V rail to spin up cleanly.

Screen dimming mid-movie with no warning

The D-VE7000S display driver reduces backlight intensity when the supply voltage sags under combined load — it is a built-in low-voltage response, not a fault. If you see this on a new battery, the cell has likely not completed its first full charge cycle and is not yet delivering full capacity. Run two complete charge-to-discharge cycles and the voltage sag under load will reduce. If dimming persists after conditioning, check that the battery contact pins on the player are clean and making firm contact — oxidised pins add resistance and produce the same sag symptom.