You can try a reset. Unplug the charger, disconnect the battery, press and hold the power button 30 seconds. Then reconnect the battery to see if anything has changed. If this is the original battery, it's about four years old and likely failing. Open an Administrator CMD prompt (CMD, run as Administrator).Paste this command, and then press Enter:powercfg /batteryreport That will show a figure for the designed battery capacity (when new) and the current capacity. How to Generate a Battery Report in Windows 10[URL] You can also run Dell Diagnostics:Immediately after pressing the power button to turn on the laptop (or after clicking the Reboot command), press F12 repeatedly to enter the One Time Boot Menu, select Diagnostics and press Enter. The Dell Diagnostics will test all your hardware. I checked and Dell Battery & Adapter shop has OEM batteries for your laptop. Another reliable source is Parts-People, who also has OEM batteries in stock for your laptop.
Hello, Recently I bought used Dell Precision 5530 and I'm having plenty problems with battery behavior. To the point, when laptop is being turned on without a charger then either it cannot be turned on or it's being turned on correctly but then immediately after the start battery is equal to 1% and "dies". When for example laptop is being plugged to charger correctly and power status is equal to eg. 45%. Then, when I'm unplugging it, turning off the laptop and running again (without charger plugged) then battery level is set to 1% but when I will plug it to charger (before it dies) then battery is suddenly changed to 45% what is ultra strange.  Additionally, when laptop was charged to 100% then unplugged from the charger it was able to run only to like ~70% on battery and when it hits that's point then it automatically was set to 1%... Battery was changed to new one and unfortunately the story appears again in case of turning on "charged" battery and laptop shows it's equal to 1% - I'm plugging it to the charger - it's immediately changed to correct battery status... Any hints & tips for me?  Thanks! 
Full baterry fully "drained" after running laptop without charger