FreeLynx batteries are rechargeable and may be quickly swapped.
Small: 240 mAh, 6.8 grams, approx. 0.5 hours
Medium: 650 mAh, 15 grams, approx. 1.5 hours
Large: 1300 mAh, 30 grams, approx. 3 hours
Custom battery options available for longer experiments.