SCANGRIP NOVA 3 Replacement Battery 11.1V 5200mAh Li-ion

SCANGRIP Nova 3 / Nova 4 K C+R — 11.1V Li-ion Replacement Battery (03.5349)

This 11.1V, 5200mAh Li-ion battery pack replaces the original power source in the SCANGRIP Nova 3 and Nova 4 K C+R inspection lights. Both models share the same battery housing, connector, and BMS handshake, so one part covers both. Capacity is drawn from the product data: 5200mAh / 57.72Wh.

• Nova 3 and Nova 4 K C+R compatibility: Both lights run the same 11.1V three-cell architecture, identical connector pinout, and the same BMS communication protocol — so a single battery revision covers both platforms without modification.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on a Nova 3 unit. The BMS held cell balance across all three cells throughout, and the protection circuit tripped correctly at the low-voltage cutoff threshold without false trips at mid-discharge.
• Multi-cell replacement rule for the Nova series: The Nova 3 and Nova 4 K C+R use a three-cell series pack. If you are replacing cells inside a pack rather than swapping the full unit, all three cells must come from the same production batch. Mixing an aged cell with new ones forces the weaker cell to absorb the highest discharge burden under turbo-mode current draw, accelerating failure in that cell.

Nova 3 output stepping down before the battery indicator hits red

The Nova 3 driver monitors pack voltage continuously. When any single cell in the three-cell series pack drops below the driver's brownout threshold — typically around 3.0V per cell, or roughly 9.0V pack voltage — the driver steps output down to protect the LEDs and the cells simultaneously. This happens before the fuel gauge indicator registers low because the indicator averages pack voltage, while the driver reacts to instantaneous sag under load. You will see output drop one mode before you expect it. This is normal driver behaviour, not a fault with the battery.

Turbo mode runtime noticeably shorter than standard mode

Turbo mode on the Nova 3 draws significantly more current than standard or low modes — often five to ten times the standard-mode draw depending on the LED driver configuration. Higher current draw means the pack voltage sags faster under load, hitting the driver's cutoff point sooner in the discharge curve. The battery itself is not faulty; the cell capacity is the same. To extend working time on a single charge, switch to standard mode for general inspection and reserve turbo for short bursts when you need maximum output on a specific area.