How to check the battery health status of apple battery case?

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Bought a used apple battery case for iPhone XS Max over eBay in order to extend the battery life on my iPhone. It does charge the built-in battery and extent the battery life a bit, however, I can’t see its status from my iPhone at all(only the built-in battery shown up) though I see people demoed theirs on YouTube which does have its charging status shown on their iPhone screen (it shows two batteries, one from the case and one from the built-in). The iOS on my phone is: 14.4.2, does anyone know how to have it shown on the phone or did I miss anything here?

Thanks,

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

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crwdns2944067:05crwdne2944067:0:

Sounds like you got a knockoff unit. Can you post some pics so we can check what you have. Make sure they are detailed and in focus Adding images to an existing question

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Hi Dan,

Just uploaded some, any thoughts?

Thanks,

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

I'm also wondering if it's a knockoff. How does the box look? Did it come in an official apple box?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

It does come with the Apple box. Upon further checking its serial number from the case, I noticed it is different from the one printed on the box. I will initiate return process on Ebay now. By the way, is there a circumstance that Apple smart battery case failed or to be recognized on IOS even it is authentic?

@hootonberg

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

@lovecd considering you bought it from eBay and the serial number don't match, I would assume you either bought a knockoff or a bad case. Hence why I tell customers to not buy accessories or apple parts from them. They may say "genuine" in the description but more often than not, they're either broken or knockoffs.

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