[SOLVED] Is it safe to replace laptop battery with lower Wh one?

[Liutauras]

My laptop battery died which was 15.4V 70.07 Wh(Nom:4550mAh). Is it safe to replace it with a 15.4V 67.76Wh 4400mAh battery?

 

[geofelt]

Laptop batteries often contain proprietary circuitry for compatible and proper operation.
Best to replace with a genuine oem(not just "compatible") replacement.
Yes, it will cost more, but original will save you a bunch of trouble.

 

[ilian359]

My laptop battery died which was 15.4V 70.07 Wh(Nom:4550mAh). Is it safe to replace it with a 15.4V 67.76Wh 4400mAh battery?

Definitely yes! It has a little less capacity: holding a few minutes less charge.
If you are accustomed to drinking beer in 500ml bottles, you won't get poisoned if you drink a 330ml bottle of beer, right?

 

[TerryLaze]

Definitely yes! It has a little less capacity: holding a few minutes less charge.
If you are accustomed to drinking beer in 500ml bottles, you won't get poisoned if you drink a 330ml bottle of beer, right?

The danger is that third part batteries seldomly are the Wh they advertise, they often are way below and don't keep the charge for long.

 

[ilian359]

You are right. But we do not know if Liutauras has been offered a genuine or a 3rd party battery. Genuine batteries also come in different capacities.