[rej696]

I had a terrible experience trying to replace failed battery packs for a family member's dyson handheld hoover. They seem to fail every 2 years or so, and the first time around we ordered the wrong part (all the different models seem to have slightly different interfaces). Dyson wouldn't allow us to return either the failed or functional but incorrect batteries, so now we have a pile of 3 or 4 hoover batteries in the cupboard!