Dell Adamo vs. MacBook Air

Battery Life

Both machines use lightweight lithium-polymer batteries – the same kind used in electric radio-controlled helicopters – rather than the more conventional lithium-ion batteries you may be used to. Apple claims 4.5 hours of runtime for its 37 watt-hour battery, and Dell claims 5 hours from its 40-watt-hours model. In reality, neither really approaches those numbers without some seriously conservative usage, but the Dell really will outlast the Air by 20 to 30 minutes with its extra capacity, which makes it the clear winner here.

Winner: Dell Adamo

Left: Dell Adamo; Right: MacBook Air