Nova SmartNOVA Replacement Battery 3.7V 1000mAh Li-ion

Nova SmartNOVA — 3.7V Li-ion Replacement Battery

This is a 3.7V, 1000mAh Li-ion replacement battery for the Nova SmartNOVA smartphone. It fits directly into the SmartNOVA and replaces the original cell when the phone no longer holds a charge or fails to power on. Capacity is 3.7Wh, matching the original specification.

• SmartNOVA platform fit: The SmartNOVA uses a compact single-cell Li-ion configuration at 3.7V nominal. This replacement matches that voltage rail and the physical dimensions of the original cell — 53.00 × 33.90 × 5.70mm — so the connector and seating align without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench. The BMS held charge termination correctly at 4.2V and did not trigger false cutoff during low-current drain. Cell voltage at rest after a full charge sat within 0.05V of rated nominal.
• Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle at standard current. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging begins on an uncalibrated reference.

Sudden shutdown at 20–30% on the SmartNOVA after a cell swap

This happens because the fuel gauge IC is still running the discharge curve it learned from the old, degraded cell. The new cell has a steeper voltage cliff under modem and screen load than the old reference expected. When the phone pulls current for a network burst or screen wake, voltage drops below the system cutoff threshold even though the reported percentage looks safe. Run one full discharge to near 0% and a complete charge to 100% without interruption — this resets the coulomb counter and recalibrates the curve against the new cell.

Phone warm near the battery during first charge after replacement

A new cell typically has higher internal impedance than one that has completed several cycles. The charge IC pushes current into a cell with more resistance, and that resistance converts some energy to heat. This is normal for the first two or three charge cycles and settles as the cell's impedance drops with use. If the phone remains warm beyond the third full charge, check that charge current is not locked to a fast-charge profile — drop to standard 5V/1A charging and monitor temperature at the back cover near the battery.