Bulging Lion Battery - Tesco Hudl 2

They may be connected to the PSU 24/7, but the charge controller will only charge the battery when it requires it.

Sometime ago I put a 18650 cell into the wrong charger (7.2v), it swelled a little , but I was still able get it into the torch. Interestingly it has worked perfectly ever since.

ITYM a correctly designed charge controller would

Owain

Yes unfortunately this is what many battery types end life experience is, sadly. Of course if you want a bit of fun then rig up a remote controlled nail gun and fire a nail through the battery in an open space. grin. Brian

Or, as in the case of my Kobo Touch eReader, if left in a drawer and not used at all for a couple of years ... as I discovered when I wanted to take it on holiday :-(

Fortunately, I was able to source a new battery with the correct connections, and the reader is working as happily as ever.

Unfortunately, the replacement didn't arrive until after I'd left for the holiday ... but I ended up not having time/energy to read the dead trees I'd taken with me anyway.

Be interesting to know what sort of internal charge controller my vaping device has. It takes a single 18650 cell, and the power is set at 15w. Charged every night from a USB 5v source, and the same cell has lasted over 2 years. Not bad considering the low price of those cells.

If you're lucky. Have a laptop which fries the battery if left plugged in even if the laptop is switched off. Removing the battery and only fitting it when needed extends its life several times.

I always buy "brand new" batteries, never old or original stock