Does anyone on the forum have experience with the AntiGravity line of lithium batteries? I saw that Aircraft Spruce starting carrying them and found their website here http://antigravitybatteries.com/our-batteries/


The advertising claims seem spectacular and the YouTube video of starting a large motorcycle engine with a battery the size of your hand was impressive. Their 25AH battery claims a massive 720 cranking amps capacity in a package size about 1/2 the width of an equivalent Concord 25AH battery ... and the AntiGravity battery weighs under 5 lbs. Can anyone see any drawbacks to this battery, other than the price? How does it compare to other lithium batteries on the market?


All the best,
Reggie