The guy that had his house burn down charged at the lower amps . That was 3 weeks ago Since then the hobbyshop (he works for) now charges and discharges batteries in the hobby king lipo safe and sell them! There was a lipo bag for 18.00 on amazon that was also very good. I saw the video and have one for a spare. They set 3 batteries on fire in the bag and it held up-The rest are garbage!!!!