iPhone 6 Plus Charging Issue After Battery Replacement

[hammy1924]

My battery was draining incredibly fast so I replaced it with an aftermarket battery kit from amazon, following a youtube video. However, with the replacement battery, I could not turn on the phone, so I switched it back to the original battery. After closing up the phone, I can't charge the phone anymore or connect to a pc. The phone turns on but it gets really hot and shuts off after a few minutes max and then turns on again by itself. On each reboot, the battery shows 1% initially and then randomly increases to 79% each time but nothing in between. For some reason, although the phone doesn't charge, when it is powered down completely, plugging it into an outlet doesn't charge the phone but causes it to boot on its own. What can I do to fix the issue?

 

[JPack]

Besides checking your own work, another option might be getting the $200 trade-in value from Apple.