This featherweight hits hard. How hard? Well, it generates run times comparable to our NiMH battery, but the Li-Ion Cub weighs less than half as much. Its lightweight makes it the perfect upgrade for 24 Hour racers. Buy it as a spare or use it as an upgrade. The Li-Ion battery is cross-compatible with all of our Seca, ARC, Solo Logic (MV), and Stella LED light heads. Includes mounting strap. Charger not included