This was not fun

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LiquidDave

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I heard a noise, looked over and was greeted with this




b2oPHK8.jpg
 

dbrandt01

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Ouch, exactly why people are told not to leave batteries charging unattended. Good thing you were close to hear it.

Question though, is the bottom of the battery all destroyed looking too? Because that looks like the positive end of the battery is all rusted looking, but the negative end of the charger looks like it too. I don't see it on the positive end of the charger. Sort of makes me think you put the battery in backwards.
 

Baditude

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This goes to show that electronic devices can fail, including protection circuitry in smart chargers. Also, any battery can vent, whether safe chemistry or not. Statistically, most battery incidents occur while or just after charging.

I always recommend that people charge their batteries on a flame-resistant surface: stove top, marble countertop, metal baking pan, pyrex dish, et al. I also always recommend to don't charge batteries when not physically present to monitor them.

I'm undecided about battery charging bags. These were designed for use with LiPo batteries/chargers for the remote control crowd. The LiPo batteries are not placed in a box charger like Lithium batteries are; the batteries are connected via wire connectors and placed in the charging bag, and the charger (the heat producing item) remains outside the bag. The negative thought is that placing a Lithium battery charger in a bag which is unventilated can cause heat and inadvertantly cause the charger or battery to catch fire or explode -- defeating the purpose of using the bag.
 
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stevegmu

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This goes to show that electronic devices can fail, including protection circuitry in smart chargers. Also, any battery can vent, whether safe chemistry or not. Statistically, most battery incidents occur while or just after charging.

I always recommend that people charge their batteries on a flame-resistant surface: stove top, marble countertop, metal baking pan, pyrex dish, et al. I also always recommend to don't charge batteries when not physically present to monitor them.

I'm undecided about battery charging bags. These were designed for use with LiPo batteries/chargers for the remote control crowd. The batteries are not placed in a box charger like Lithium batteries are; the batteries are connected via wire connectors and placed in the charging bag, and the charger (the heat producing item) remains outside the bag. The negative thought is that placing a Lithium battery charger in a bag which is unventilated can cause heat and inadvertantly cause the charger or battery to catch fire or explode -- defeating the purpose of using the bag.

What about an ammo box? I think those who use mechs should probably have one around just in case. Maybe a hole can be cut in one for the cord and place the charger in the ammo box...
 
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dbrandt01

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I don't think so Steve. To prove a point, I took pictures. I trust VaporDNA where I got these batteries, which are samsung 25r. If you look at the label on his picture compared to mine the area in the picture shows the positive end of the battery. If you also notice in the OPs picture, the messed up part on the positive end is the same type pattern on the negative end of the charger. I would assume if you put that battery back in the charger with the positive end down, it would line up perfectly.

 
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