I had a braille battery and it worked great until I let it go dead once and then It lost some juice because in cold weather at Johnson Creek I barely got it started with a jump. Lesson learned don't leave on your master switch. I'm trying the EarthX now because it has low-voltage and High voltage protection. I don't believe there's any kind of danger with these iron phosphate lithium batteries. EarthX hasn't had any problems with them in the past. Only Lithium ion batteries have their problems with overheating .