Replacement battery help

[Majestic_Koala]

So i need a replacement battery for my TOSHIBA SATELLITE  C55 A 1N1  Laptop, it has ran from 5 hours of battery life to just a weak 30 minutes. So i found this:

https://www.amazon.co.uk/Green-Standard-Battery-Toshiba-Satellite/dp/B01M11ARUC/ref=sr_1_1?s=computers&ie=UTF8&qid=1478869021&sr=1-1&keywords=battery+C55+A+1N1

 

It says it's for this design however i noticed on the original battery it has "DC 10.8V/10.8 V 48Wh/4200mAh" 

 

On the new one it says "11.1V 4400mAh(48Wh)"

 

Now since the two batteries have a storage increase i am fine with but the voltage is 0.3 greater.

 

Will this be an issue? Will it cause my computer to fry?

[samcool55]

Nope, won't be an issue.

My battery for example is constantly going between 12V and 10V depending on the charge and how long it has been sitting there.

 

Your notebook can handle such voltage differences without any issues

 

Btw, just to be sure, you should install HWMonitor, it should be able to figure out what's going on with the battery (capacity, voltage, wear level)