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Batteries advice guides

4 articles
Which batteries last the longest? And how much do you need to spend to get the best batteries? Our guides reveal what you need to know about disposable batteries.

Best AAA batteries

By Which?
The best AAA batteries last hours longer than the worst. Here we round up the batteries' test results to help you find the best AAA batteries for your gadgets.
6 August 2021

Best AA batteries

By Which?
The best AA batteries last around three hours longer than the worst in your most power-hungry devices. We compare the best and worst directly to help you find your ideal AA battery.
3 September 2021

How to buy the best batteries

By Which?
Looking for the batteries that will last the longest? We’ll help you choose the best batteries for your gadgets and budget.
29 June 2021

How we test batteries

By Sarah Ingrams

Find out how we test batteries to find the best and longest-lasting ones for your devices. Only the best batteries become Best Buys.

12 July 2021