Kyle should be ignored at all chances, but XS is the best company i've used thus far. I've had a few of them be 100% flat on voltage where i thought they wouldn't come back, put them on an XS charger and 2 days later holding voltage and starting my vehicle every time. Great customer service too. Had a 3100 arrive with a hairline crack in it, called and they sent me a new one after i sent in the cracked one. They even made a video after they cut the side off of it and load tested it which showed even damaged they'll still kick ass! Whatever they're doing, I hope they don't sacrifice quality for anything! XSPOWER FTMFW!!!