With a 1300mAh battery driving everything forward, you can't expect the Acer Liquid Mini to last for ever. On standby, with almost no use being made of it, it went for days without seeming to lose any battery charge at all.
But start asking it to do things and it's a different story. We went from a nearly full charge to needing to recharge in six hours after thrashing the 3G, Wi-Fi and music player.
We reckon you'll probably need to recharge daily, as with any other smartphone, and if you're a power user – by which we mean you actually use features like GPS and 3G data a lot – and don't have ready access to mains power, then you may need to look elsewhere for a smartphone with better battery life.
For the record, Acer gives a quotation of 6.5 hours 3G talk, 8 hours on 2G, and 480 hours of standby on 3G, 400 hours on 2G.
We've mentioned already that the Acer Liquid Mini has all the necessary connectivity accoutrements to count as a smartphone. GPS, HSDPA, Wi-Fi, Bluetooth and even DLNA.