I travel 8 months of the year around the world with my 2017 MacBook. I also have my late 2009 MacBook which I take with me at times when I prefer to leave my new one at home. The original Apple battery lasted an amazing 6 years with 2500 cycle counts on it! It kind of made me realise the quality that Apple demands from its component suppliers. Sadly, Apple could not supply a replacement battery due to my MacBook being 6 years old and I was forced here in the UK to buy from Amazon. I bought a SLODA battery due to its decent reviews at £45. At first the battery lasted for 4 hours on a charge - slightly less than the original. At 12 months old, it dropped to less than 2 hours and then fell to 25 minutes. At 23 months old, it is now completely useless. It's warped and have pushed out my lower case panel etc. I messaged the company vis Amazon and today this is the message that I received... "Deeply sorry for the inconvenience, we sincerely apologize. But as you can see we offer replacement batteries at a price much lower than original ones, and the battery life is shorter than Apple battery too, that's the maximum we can offer, hope for your kind understanding. Wish you a nice day! SLODA Power Service" This has got to be the most non existent customer service ever. I guess that i'm lucky that the battery did not explode. Does ANYONE know of a decent battery that I can buy here in the UK please? Does Amazon really allow its sellers to behave like this?