What type of battery should I buy?

Shop around for AA and AAA batteries and the main types you’ll find are alkaline and lithium disposable batteries. Lithium batteries last a lot longer in more energy intensive devices. We've found that they can give you 2-3 hours more power than an alkaline battery. But they're also much more expensive.

Do batteries rank better than other brands?

Ranking brands is different from ranking batteries, of course, and it turns out to be a lot more complicated. You cannot necessarily trust that every battery made by one brand is automatically better than every comparable battery from any other given brand.

Which battery is best for a car?

Absorbent Glass Mat (AGM) batteries are the most advanced batteries you’ll find in a car right now, unless you’re driving a plug-in hybrid or a fully electric vehicle. AGM batteries are also suitable for cars with start-stop systems, but they offer the potential for many more starts than an EFB battery and will have a longer service life.

Are best buy batteries any good?

Typically, the Best Buys are also some of the priciest batteries. However, you can save money by opting for high scoring own-brand batteries, where a pack of eight is just a fraction of the price of other Best Buys. Log in to reveal our pick of the best batteries in our tests. Not a member? Join Which? today. Last updated June 2024.

Which AA battery has the longest life?

Duracell and Energizer AA batteries often lead the market in longevity. Both brands are frequently cited for their long-lasting power. Which lithium-ion battery brands are known for their longevity? For lithium-ion batteries, brands like Panasonic, Sony, and Samsung are recognized for their long-lasting charge cycles.

Which AA batteries are best?

We’ve compared Energizer, Duracell and Panasonic batteries with supermarket own-brand batteries, such as Aldi, Morrisons, Lidl and Sainsbury's, to find the very best. Put a set of one of our Best Buy AA disposable batteries in your most power-hungry devices, such as a camera or torch, and they will last over three hours longer than the worst.