CharliesTheMan
Gone - bye bye.
This is why you should never leave your batteries unattended. I'm always VERY careful with my LiPo batteries. I always charge them in a LiPo sack to contain the blast and fire if the explode, always monitor them constantly, check temps, etc... Well this was caused by a NIMH battery. You can tell which cell went first just going by the burn mark analysis lol. Thank goodness I wasn't in the hobby room when it happened. There had just been two young children at the house, which is why I was charging the battery, and they could have been seriously injured. The Lord takes care of us, that's for sure. Just from the "BOOM" I heard from the other end of the house, it was a pretty good explosion. When I got in the room there were pieces of black plastic shrink wrap particles and soot filling the air, with a funny smell. I grapped all the battery pieces that I could find and took them outside. I started to clean up and heard a hissing... I had miss the bad cell, it had shot across the room apparently. There wasn't too much of a mess, mostly this black powder and soot covering everything on about 1/3 of the room. I have a full day ahead of me just taking all that stuff out and cleaning it, then cleaning the carpet and shelves, then putting it back. I might just have to take off work tomorrow, but I kinda want to be at the office in case the DX3R comes in the mail. I'll save my day off for when I have my radio and motor so I can go crawling.
This picture is after I vacuumed the area. There was about a 3 x 3 foot area that looked exactly the same, but all the rest of it vacuumed right up. I was looking at most of this and it looks stained rather than burned,so I really hope that it will shampoo out.
Now here's what caused the boom. I was using a cheapo $30 to $40 charger and I should have known better, and it was quite a few years old. I have used it quite a few times before and it worked fine. I had a LiPo charging on the hyperion (thank goodness the LiPo sack shielded it from the explosion) and I needed to charge the battery so the kids that were over here could run one of the Rustys. Unfortunately, this time when I used it, the peak detection never activated and shut the charger down. I had been checking on the battery, and I just planned my check in times wrong I guess. I checked on it twice, and it wasn't getting hot or anything. It was warm on the second time I checked, but didn't feel anywhere near as warm as it is when it would have gotten done charging. About 10 minutes later, KA-BOOOOOM was heard throughout the house. It sounded exactly like when it's storming and you here a transformer blow, only it sounded like the transformer was on a pole IN my hobby room.
This picture is after I vacuumed the area. There was about a 3 x 3 foot area that looked exactly the same, but all the rest of it vacuumed right up. I was looking at most of this and it looks stained rather than burned,so I really hope that it will shampoo out.
Now here's what caused the boom. I was using a cheapo $30 to $40 charger and I should have known better, and it was quite a few years old. I have used it quite a few times before and it worked fine. I had a LiPo charging on the hyperion (thank goodness the LiPo sack shielded it from the explosion) and I needed to charge the battery so the kids that were over here could run one of the Rustys. Unfortunately, this time when I used it, the peak detection never activated and shut the charger down. I had been checking on the battery, and I just planned my check in times wrong I guess. I checked on it twice, and it wasn't getting hot or anything. It was warm on the second time I checked, but didn't feel anywhere near as warm as it is when it would have gotten done charging. About 10 minutes later, KA-BOOOOOM was heard throughout the house. It sounded exactly like when it's storming and you here a transformer blow, only it sounded like the transformer was on a pole IN my hobby room.