Second one worked,
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This review is from: iGloo Micro USB Mains Charger For Amazon Kindle Fire, Fire HD and Kindle Paperwhite Tablet - Black
The product is as described, and does its job perfectly well. Charges the Kindle much faster than leaving it plugged in via USB.
It's a one-piece, so that makes the plug a little bulky if you want to take it out with your Kindle.
My only concern was that my 8-y.o. broke the first one we ordered on only the second time she plugged it in.
She irreparably bent the connector pushing the charger into the slot on the Kindle, but as I wasn't watching her at the time, I'm not sure whether that was flimsy product or over-enthusiastic use.
Either way, the first one eventually went in the bin, and a second one was ordered.
There was a bit of email to-&-froing with the seller, but at this (very reasonable) price, and given I don't know if it was actually my daughter's fault it broke, I didn't get a refund on the first one.