What are your top tips for maximising the life of rechargeable batteries? I've got lots and they don't seem to last as long as they used to. Richard Brown
Different kinds of battery require different approaches, so it's a bigger topic than it sounds. However, BatteryUniversity.com provides comprehensive coverage and a handy summary in table form.
With the increasingly common Lithium-ion (Li-ion) types, the main advice is not to discharge them more than once a month: try to recharge them when they are on 20% or so. Alas, they are only good for a limited number of cycles and age even if not used. They may need replacing after 18-24 months or 350-500 cycles, but can last longer. It's always worth checking the device's manual for information and advice.
