HP Envy 15t K000 CTO laptop Battery Life

Recently, I purchased HP Envy 15t K000 CTO laptop through Costco.
Intel i7-4710HQ, 16GB, Crucial MX100 512GB SSD (I replaced)
Everything is OK but battery life.
It stands 2h 30m as 50% brightness, Wifi connect and lite surfing.
and 3h 30m stands as Power Save Mode with 30% brigtness, wifi connect and idle.
HP said 6h 15m in their website and too much different.
is this ordinary battery life or mine has problem ?
Anyone has same laptop, let me know your battery life.
Thanks

 

I have the same laptop only difference is that mine has 12GB of ram but the battery life is about the same as yours. I'm guessing the battery is the problem, and I've been looking for other batteries with a bigger charge but have not found any.

 

I've noted before about similar problem, just copy-paste it here:
Before consider replacing battery you should check what exactly "eat" your battery.
To do so - just open "task manager" and check average CPU load within 1-2 minutes.
In normal circumstances average CPU load is bellow 1%
When playing music: 1..2% (can peak to 4%)
Browsing internet e.t.c. can eat little more, but actually not much (only during page load/parsing)
During these scenarios you can stay about 4h on battery.
If your measurements significantly lower - consider replace your battery.

If you going to use this laptop for gaming - consider plug in power supply.
battery is not for gaming ... smoother playing experience drain more power.
even little games can draw 100% CPU/GPU drawing 150 or even more FPS ...
and eat your battery as fast as very heavy games running 15 FPS

One good advice:
To get some extra battery life (and make it cooler) use Intel XTU utility for undervolting purposes.
You can easily undervolt your CPU by ~0.1 V (around from 1.1 V to 1.0 V)

According heat generation formula: Q = I^2 * R, U = I * R, R - assume constant, and U is 10% less than before => I is 10% less too.
=> you'll get around: 0.9 ^ 2 = 0.81 power consumption. that means your CPU eat 19% less energy than before undervolting.



Regarding 6+ hours on battery - absolute nonsense IMHO. This laptop unable to beat this mark.
Absolute maximum I've been able to get from it - just little more than 5h in "reading scenario" (no WiFi e.t.c. and low brightness, in addition XTU set to 0.8GHz max and -210mV CPU undervolt)