The CoconutBattery output looks good!
Its what I would expect. How about cleaning the MagSafe connections in case your one-wire sense line was not making good contact. Review this Apple T/N [https://support.apple.com/en-us/HT203207|Apple Portables: Troubleshooting MagSafe adapters]. Make sure the cable is not damaged in any way, also make sure you have a real Apple charger! There are many fakes out there that will damage your system [https://beetstech.com/blog/oem-magsafe-chargers-vs-counterfeits-teardown-for-truth|OEM MagSafe Chargers vs Cheap Imposters: Teardown for Truth].
See if after cleaning the connections and if needed a replacement charger fixes things.