Chosen Solution
original battery needed replacing in wifes phone, but several ebay bought batteries not good -all had small charge level in them and phone would start up, but quickly failed. messed up original battery having to pry it out since sticky tape broke in phone, but it still worked for a while longer. . Found IbackupBot.com and downloaded to check battery cycle count (suspecting batteries were junk)- reported all have ZERo cycles; system log reports shown in same program all show every 5 secs two errors - something like (these are not my exact log file lines)
iPhone CLTM[14] 
Sounds like you damaged the filter and/or capacitor in the gas gauge circuit on the logic board. Fairly common issue when replacing batteries. These are very very small 01005 packages with tight clearance… It will require specialty equipment to repair. If you don’t feel up to it/don’t want to invest in the equipment/value the phone a lot, I’m willing to take it and I’m sure Jessa is too.
I had the same issue with a battery replacements, BSOD, reboots (thought it was long screw damage on LCD plate) I thought the gas gauge was on the circuit board in the battery ? Put battery in another phone, did the same thing stuck gauge, Reset, restored ran up and down charge, eventually the battery started doing all the right things % wise Put another of these darn batteries in other phone and is now stable but cant get gauge to work. Most IP5 batteries are USED, 5S because they are hard t o remove are new 3rd party and shonky