No, you can always go higher. Just like PC computer components and PC power supplies, the components will only demand what they need, not what the PSU can deliver.
The voltage is most important and you are ensuring that. The other concern is the physical compatibility. The battery must fit in the battery compartment - but the electrical connections must match too.
The downside to buying bigger is charging to full capacity may take a little longer.
BTW, you twice said "netbook" but when I look up the V5, it clearly is a notebook. Netbooks are smaller, less powerful, no optical drives and often do not have user-replaceable batteries.