SCANGRIP NOVA 20 C+R Compatible Battery 11.1V 5200mAh 03.5078

SCANGRIP NOVA 20 C+R — 11.1V Li-ion Replacement Battery (03.5078)

This is an 11.1V 5200mAh (57.72Wh) lithium-ion battery for the SCANGRIP NOVA 20 C+R work flashlight. It fits the NOVA 20 C+R (03.5056) and the Multimatch C+R (03.5415). All three share the same battery bay geometry, voltage rail, and connector configuration.

• NOVA 20 C+R and Multimatch C+R compatibility: Both lights run the same 11.1V three-cell pack and use the same mechanical locking interface. The driver boards in each model are calibrated to the same voltage floor, so one battery services both tools without modification.
• Bench tested on actual hardware: We ran this pack through a full charge and discharge cycle on the NOVA 20 C+R. The BMS held cell balance through turbo mode and stepped down cleanly at the low-voltage cutoff without tripping the driver into a fault state.
• Multi-cell replacement tip: The 03.5078 is a sealed three-cell assembly. Never mix this replacement pack with a partially depleted original in a dual-battery setup — mismatched state-of-charge causes the weaker pack to discharge first, which can push individual cells below safe voltage under high-current turbo draw.

Why the NOVA 20 C+R steps down brightness before the battery indicator reads low

The NOVA 20 C+R driver monitors cell voltage directly, not pack percentage. When turbo mode pulls high current, internal resistance causes a temporary voltage sag below the driver's brownout threshold — even if the cells still hold significant charge. The driver steps down output to protect the cells, which looks like early dimming. This is normal behaviour, not a fault. Switching to standard or medium mode lets the voltage recover and restores full output.

Battery charges fully but turbo mode runtime is significantly shorter than expected

Turbo mode on the NOVA 20 C+R draws five to ten times more current than standard mode. That high draw accelerates heat buildup inside the cell stack, which can trigger the BMS thermal limiter and reduce available capacity per cycle. If this pattern repeats on a new pack, check that the battery contacts are clean and making full surface contact — partial contact raises resistance and worsens the voltage sag under load. A full charge to 12.6V confirmed at the terminals rules out a charging fault.