Refreshing a dead LP-E4 with new Cells

[Botts]

Darwin Award ( I love this therm!) I use Lipo Packs for my Quadrocopters and know how to handle these Lithium stuffed things. Don´t worry about me, it will sleep in the battery bunker with the other ones.
But speaking of that, don´t try to do things like this without knowing what you are doing!!!
(These Cells with CIDs and good protection circuitry on the board are quite save, but better save than sorry)

That's good, Li-Po cells can be scary. Any DIY'd ones are good to keep in a battery bunker when not supervised.

So, not for the typical do-it-yourselfer or first timer... prior experience with Li-Ion cells and electronics recommended.

Definitely not worth playing with without experience with LiPo cells, and appropriate safety equipment. A battery safe / battery bunker is important, as is a CO2 fire extinguisher.

An angry LiPo cell started a pretty significant fire in our local Samsung store. I'll try and find the news article.

To put it bluntly, when I worked for Apple there were only two tests that you HAD to pass:

#1: Electrical and CRT safety. CRTs killed a lot of computer and TV techs in the olden days.
#2: Lithium battery safety. This is crucial as Apple doesn't use plastic shielding on most of the new batteries to safe space. It's fine if you are careful and know what you are doing, but even still, some packs get punctured or shorted, and then that's where the battery safe / fire extinguisher can come into play.

Don't mess around with lithium cells if you aren't sure of what you're doing.