Inspiron 7559 battery drains in 2 hrs.

Hi,
I have the following laptop.
Problem is that on a full charge battery lasts less than 2 hrs.

Inspiron 7559 i7-6700HQ CPU 2.6 GHz.
It has NVidia GTX 960M graphics card along with Intel graphics card.

16 GB memory.
all SSD drives.

BatteryviewInfo shows following....

Description Value
Battery Name Dell
Manufacture Name SDI
Serial Number 37133
Manufacture Date
Power State Discharging
Current Capacity (in %) 35.1%
Current Capacity Value 18,803 mWh
Full Charged Capacity 53,591 mWh
Designed Capacity 73,993 mWh
Battery Health 72.4%
Voltage 10,512 millivolts
Charge/Discharge Rate -64,313 milliwatts
Chemistry Lithium Ion
Low Battery Capacity (1)
Low Battery Capacity (2) 5,350 mWh
Critical Bias
Number of charge/discharge cycles 0
Battery Temperature
Remaining battery time for the current activity (Estimated) 00:20:57
Full battery time for the current activity (Estimated) 00:58:33
Remaining time for charging the battery (Estimated)
Total time for charging the battery (Estimated)

 

Your power drain is rather high. What power plan do you have your machine set to? Also check for any applications putting unnecessary load on the CPU. You're at 30% wear, too, so that also plays a role. You only have about 70% of the original capabilities of the battery at your disposal.

 

I don't know why battery only charges to 70% or so.
It's still under warranty, does Dell cover that?

I just now changed to on battery = Better Battery mode.
I also played with ThrottleStop and now BatteryInfo shows 2.5-3.5 hrs.
My normal mode of usage is browsing and some streaming and watching downloaded movies.

 

Battery warranties are usually only 6-12 months.

Make sure there's no Virus or mining malware.

 

Some Windows update failed to install properly on mine late last fall and my machine has been a mess ever since. If the new spring creators update doesnt fix it i will havevto do a clean instal. Mynissue iscwell known andvtge fix from microsoft didnt fix it.
Mine is always plugged in so i cant speak for battery, but my o/s has gone buggy

 

Considering you only have approximately 53.5Wh when fully charged and your CPU TDP is likely throttled at 15W on battery power, your theoretical runntime (at 15W load) would be 3.567 hours BEFORE considering all other power drawing components such as LCD panel and backlight, hard drives, and keyboard backlight (if applicable), RAM, dGPU, etc.

I would recommend firing up Throttle Stop and checking your power draw in watts doing various tasks to get a better idea of what's going on.

Also examine your C states. It sounds like your machine is not going deeper than C2 or C3.

You may also have too many things running in background processes not allowing your machine to enter lower power levels.