Which?:

When it comes to laptops, battery life can be a key buying decision. But Which? has discovered that the battery life claimed by laptop manufacturers rarely lives up to reality, with our tests finding it often falls drastically short. Which? testing has shown that almost all laptop manufacturers overstate their battery claims. In some cases, the battery life estimates were double what we achieved in our lab testing.

It’s not all bad news, however – our tests found that with Apple MacBooks, you could meet or even exceed the claimed battery life, according to Apple.

Good news for Apple but shameful that other manufacturers’ stated claims fall so far short.