I have Dell Precision 3510 with Ubuntu, its relatively new, buy it in last august. Battery works fine before, but in one day it doesnt start without ac adapter plugged in and turns off if I unplugged.
I am not very experience linux user. I use this command "upower -i /org/freedesktop/UPower/devices/battery_BAT0" to check the battery. It seems battery is ok.
native-path: BAT0 vendor: LGC-LGC3.67 model: DELL G9G1H67 serial: 41793 power supply: yes updated: Сб. 28 янв. 2017 00:24:55 (1065 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: fully-charged energy: 83,9952 Wh energy-empty: 0 Wh energy-full: 83,9952 Wh energy-full-design: 83,9952 Wh energy-rate: 0,0114 W voltage: 13,011 V percentage: 100% capacity: 98,6428% technology: lithium-ion
Wait for your advice