just bought a laptop battery from ifixit , is the temp normal?

Sounds like you hadn’t fully cleared SMC settings so your older batteries data is still being held. Lets do this carefully disconnect your battery following the guide to Step 4 MacBook Pro 15英寸 视网膜显示屏 2014年年中 电池更换. Now with nothing else connected, press and hold the power button for a good 15 secs so the logic board is fully discharged. Now plug-in your MagSafe charger and restart your system so it gets to the desktop give is a few minutes and launch CoconutBattery again give it a bit more time it should now show the batteries correct manufacturing date. Now shut down the system and reconnect the battery. That should resolve things.

As far as temp 101℉ is not anything to worry about. If on the other hand that was 101℃ then we would have an issue!

Your battery is under charge and the lower half the discharge will have a higher temp and then it levels off and as it get near full charge it will be less. The trick is not to let your battery get too low as that ticks off a cycle count and you have a limited amount of cycles within the battery.