![]() rechargeables don’t deliver as much voltage as disposables (typically 1.25V rather than 1.5V), but they normally maintain the same level for longer and can just be recharged when they run dry. Generally speaking, you should go for alkalines for most of your battery needs but opt for lithiums for digital cameras or other high-drain products where you need a reliable high charge for as long as possible. The only negative? They’re significantly more expensive. They can also be up to 9g lighter than the equivalent alkaline AA battery, which counts when you have something powered by four AAs. ![]() While normal alkaline AAs struggle below 0☌, lithium batteries will operate down to -40☌. They last much longer, have an epic shelf life, don’t discharge as much power when not in use and can cope with extreme temperatures. ![]() Lithium : Lithium batteries work even better than alkalines. Technical advances have also seen the major problems – a short shelf life and a propensity to leak – reduced or even fixed. They’re cheap and very easy to find, and last much longer than the old zinc chloride batteries. They’re cheap as chips when bought in bulk and fine for low-drain gadgets such as a remote control, but you’ll go through them quickly on anything more demanding.Īlkaline : The mainstream battery technology for high-drain devices. Zinc chloride : This used to be the general-purpose battery of choice, but alkaline batteries are now so cheap that you don’t often see them. Today’s disposable batteries break down into three basic types: For some purposes – when you’re powering low-drain devices such as a clock or remote control – the differences aren’t that important, but with high-drain devices like a camera, game controller or anything with a lamp, screen or motor, you could see huge differences in lifespan and reliability. Different manufacturers use different chemistries and processes to make them, and there are big differences in terms of how much power the battery can supply, how long it lasts and how fast the battery loses energy while not in active use. How to choose the best AA batteries for youĪA batteries might be cheap and cheerful, but that doesn’t mean they’re all the same.
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