iPhone 6 Plus NOT Charging

Hello, Happy New Year!!!!

I have a iPhone 6 Plus which doesn’t charge. When I removed the battery and checked voltage at battery connector it shows very low voltage (0.02v or something) when connected to charger.

But once I install a charged battery from my other iPhone 6 Plus it works perfectly but won’t charge even when the phone is turned on. It shows Charging symbol but battery percentage stuck at same level.

Any help appreciated.