I have replaced iPhone 4S batteries in the past but these were all official replacement parts. Right now I'm looking for a higher capacity battery. I ran into this battery (also on other websites), but I'd like to know if this is trustworthy and safe. I quickly googled and don't see anything bad other than "Fake higher capacity battery for 3GS".
Has anyone got experience with these batteries and are they safe to use / of enough quality?
Look on eBay. Check the seller's rating before purchasing.
I've bought other batteries and if you don't look at real bottom end prices you can get a good quality replacement battery for about half price.
Thanks, well, it's a shop that sells more than just those batteries, so that's why I asked. It can be a legitimate product but it can still be "a bad battery", which wouldn't be the seller's fault. However, I'll just order it and see where it goes. It's just a few dollars so if it goes to waste I won't really mind.