Nevo UEI-NEVO C3 Replacement Battery 3.7V 1000mAh Li-ion

Nevo UEI-NEVO C3 — 3.7V Li-ion Replacement Battery (HK-NP60-850)

This is a 3.7V Li-ion battery rated at 1000mAh (3.7Wh), built to the HK-NP60-850 specification. It fits the Nevo UEI-NEVO C3 universal remote control. When the original cell depletes or fails, this replacement restores full control of your home entertainment setup without buying a new remote.

• UEI-NEVO C3 fit: The C3 remote uses a single Li-ion cell at 3.7V nominal to power its IR transmitter, processor, and onboard memory. This battery matches the OEM voltage and connector footprint so the BMS handshake completes on first install.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench to confirm BMS communication, full charge acceptance to 4.2V, and clean cutoff at the low-voltage threshold without false trips.
• Single-cell Li-ion install tip: Unlike AA-powered remotes, the C3 runs one Li-ion cell — there is no second cell to worry about. Verify polarity orientation against the markings inside the battery compartment before closing the cover, as a reversed cell registers zero voltage and the remote will not power on.

Why the C3 remote stops responding even with charge remaining

The IR LED in the C3 requires a stable voltage above roughly 3.2V to fire a signal strong enough for most AV receivers and TVs to register. As a Li-ion cell ages, its internal resistance rises — voltage sags under load even if resting voltage looks acceptable. The remote may appear to have charge, but under the burst draw of an IR pulse the cell voltage drops below the LED threshold. Replacing the cell at this point restores full IR output immediately.

Remote has to be pointed directly at the device and held closer than before

This is a classic sign of reduced IR LED drive current — not a pairing or programming issue. When battery voltage sits between 3.2V and 3.5V on a degraded cell, the IR burst is weaker and the beam angle narrows. Devices that once responded at five metres across the room may only respond at one metre with the remote aimed dead-on. Fit a fresh cell and test at normal operating distance — if range returns, the battery was the cause.