Forbes Contributor Tim Worstall says that Apple’s new OS, Mountain Lion, seems alas to be causing similar problems with battery life that its predecessor OS X 10.7 Lion did. Its just that its hitting a different set of users now.
Worstall observes that this is rather more than just a few people whinging about a small decline in battery life – the actual loss seems to be some 50% of previous life (eg: under OS X 10.6 Snow Leopard) which is a seriously significant factor for laptop users.
Even more troubling, Worstall says is that Apple doesn’t seem to really know why the move from Snow Leopard to Lion caused such a diminishment of battery life. and they’ve not been able to issue a fix, but whatever, the move from Lion to Mountain Lion hasn’t fixed the problem for those who were so affected, amd moreover has started to cause the same problems for users whoi hadn’t been affected under Lion.
Something to consider before making the leap, if you haven’t already. Personally, having skipped Lion entirely, your editor is going to install Mountain Lion on a separate hard drive partition and keep the existing Snow Leopard install intact for now.