Insignia NS-NCV20 Compatible Battery 3.7V 1400mAh

Insignia NS-NCV20 — 3.7V Li-Polymer Replacement Battery (604060(140))

This 3.7V, 1400mAh lithium-polymer cell replaces the original battery in the Insignia NS-NCV20 portable GPS navigator. It matches the OEM part number 604060(140) and fits the physical bay without modification. Capacity figures are taken directly from the product specification — 5.18Wh total energy.

• NS-NCV20 fit: The NS-NCV20 uses a single-cell Li-Polymer pack at 3.7V nominal. This cell matches that voltage rail and the 60.75 × 36.26 × 5.30mm footprint, so the connector seats correctly and the BMS reads state-of-charge without calibration errors.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on GPS navigator hardware. The BMS reported accurate state-of-charge from the first cycle and did not trigger false low-voltage cutoffs during active navigation sessions.
• Cold-start tip for the NS-NCV20: After fitting this cell, power the unit on outdoors and let it acquire a satellite fix before driving. The NS-NCV20 performs a cold start after any full power interruption — first fix can take 5–10 minutes, while subsequent warm starts lock in under a minute.

GPS accuracy reduced at low battery on the NS-NCV20

When cell voltage drops toward 3.4V, some GPS navigator units reduce RF receiver sensitivity to cut current draw. On the NS-NCV20 this shows up as position drift or a wider accuracy circle on-screen. It is not a satellite signal issue — it is a deliberate power-saving response in the receiver firmware. Keeping the battery above 3.6V during active navigation avoids the sensitivity reduction entirely.

NS-NCV20 shutting off without warning before the battery indicator empties

A degraded or freshly swapped cell can cause the NS-NCV20 to cut power abruptly while the on-screen indicator still shows one or two bars. The fuel gauge in this unit is voltage-based, not coulomb-counted, so the indicator loses accuracy when cell internal resistance changes. A new cell recalibrates over two to three full charge-discharge cycles. Run two complete cycles — charge to 4.2V, use until auto-shutdown — and the indicator will track remaining capacity correctly.