i have a habit of sleeping in a power recliner... which is great except when the power goes out.  The built in (2) 9v transistor radio batteries really don't cut it... so I sliced in (2) 6 in series AA battery holders which is better.  The motor is rated 30 volts so I decided to up the power by swappng the 6 series for 8 series AA battery holders (24vdc).  I needed 2, so I ordered 3.  I swapped my nearly new AA cells in & added new to make my 8 cells in each.  Glad I was working on my desk. One of the holders shorted ONE AA cell.  The coil spring on the negative was off center & somehow got in contact with the cell case which is positive.  Dead short!  So the cell quickly became too hot to touch...  just that one cell.  The battery holder wasn't connected to anything... no other shorts. Somehow I pried the smoking little battery out before anything melted.  Yeah, that was fun.   

Edited October 8, 20177 yr by flagmanruss

Here you go...

 

Edited October 8, 20177 yr by Mopar1973Man

What's scary is the transformer it's connect to is supposed hide under the chair.  Because the 9V cells were prone to fail when needed most, I'd put the transformer on a shelf at arm rest height... but on my weak side is all that's available. 

But if this had melted down when I was asleep... it could have caused a FIRE way too close to my body.  I really don't want to go out that way. 

 

I wonder of the outfit selling these components will replace it on my say so?  Glad I bought a spare... I usually do... because you never know about these cheap widgets.