Question can i replace my 4450 mAh (51 Wh) laptop battery with 8950 mAh(68 Wh)?

[MathReif]

hello i have my dell latitude 5490 notebook with old battery with half battery life. can i use battery with lover voltage? thanks for answer!

 

[COLGeek]

You must use a battery compatible with the laptop itself. What specific battery are you asking about (link please)?

 

[MathReif]

i have this one:
https://www.dell.com/en-us/shop/del...or-select-laptops/apd/451-bbzt/pc-accessories

and if i can replace it with this one:
https://www.dell.com/en-us/shop/del...or-select-laptops/apd/451-bbzg/pc-accessories

its says its compatible and there is space for it, but it have different voltage

 

[COLGeek]

Should be fine and have better battery life than the first one.

 

[MathReif]

so the difference in voltages its not a problem?

 

[COLGeek]

Not a problem. You'll get a compatible battery with more useful life than the original battery.

What are you comparing in terms of voltage differences?

 

[MathReif]

bcs from this official dell site https://www.dell.com/support/manual...c673cd-f09c-45d0-84ec-e985cd3a8f1b&lang=en-us and other shop sites it says that 51 wh battery have highter voltage than 68 wh and i thought its problem

 

[COLGeek]

You'll be fine. The larger capacity battery is fully compatible.

 

[Etrius vanRandr]

hello i have my dell latitude 5490 notebook with old battery with half battery life. can i use battery with lover voltage? thanks for answer!

No, you cannot. You must use the same battery model.

 

[COLGeek]

No, you cannot. You must use the same battery model.

The desired battery is clearly listed as compatible with the OP's stated model:

https://www.dell.com/en-us/shop/del...or-select-laptops/apd/451-bbzg/pc-accessories

Are you aware of some info to dispute what Dell listed for the battery?