I would like to buy a spare battery for my Lenovo Ideapad Z575. The part numbers on the original battery appear to be: L09M6Y02 and 3ICR1/65-2.
Lenovo's price is over £100 but there are several APPARENTLY compatible alternatives (quoting same L09 number and model range) on Amazon and various other online retail sites, in the £25-£50 range.
BUT... they all appear to be Nom 10.6v or 10.8v ...whereas the original says it is Nom 11.1v 48Wh.
Is this just a power/performance difference, or would using a different voltage be "A Bad Thing" ?
Basically I am a bear with very little tech savvy, and do not want to smoke my laptop, so any advice would be gratefully received!
Many thanks guys.

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