Our latest tests reveal which are the best AA and AAA batteries to buy this Christmas, from powering your kids' toys to fairy lights and remote controls.
Which? uncovers six new Best Buys in our latest test of AA and AAA rechargeable batteries, but we also found the worst battery we’ve seen in years.
Which? reveals how to spot a bargain on batteries for Christmas from more than 50 battery types tested in 2017.
We compare the best and worst AA disposable batteries to identify which type works best for a range of devices.