![]() This puts the battery in a different state - one that will enable it to recharge properly when next winter inevitably arrives. Most of them will have special procedures for you to 'tell' the light that you are shutting it down for more than a month. When the winter is over and your lights are put away for the summer, you should take note of the manufacturer's instructions for what to do to preserve battery life. Previously available rechargeable batteries were the NiCad or NiMH types which looked like the batteries of old but could be recharged the problem with these being that if not used they would self-discharge quite quickly.Ī note of caution with lithium ion batteries, however. These batteries can be made small enough and light enough to hold enough charge to give acceptably long burn times for most riders and can be easily charged by USB cable from the computer on your desk. ![]() The vast majority of bike lights on sale now contain lithium ion/polymer batteries similar to those powering our mobile phones. These lights run on watch-type batteries (CR2032 are the most common size), and they can run for many hundreds of hours with acceptable levels of light for such tiny units. The one exception to this is the tiny blinky lights that can be used as a back-up to your main system. The days of disposable battery bike lights are now nearly gone….there are a few cheap versions still available but they’re really not worth it. In addition, the hostile environment we expect our lights to operate in is tough enough for any electrical item, so don't expect too much from them. Keeping warm and dry is hard enough, but keeping up with adequate lighting requires a proper test and review every year. The autumn and winter period in the UK is never the easiest time for bicycle commuters who invariably have to contend with colder temperatures, increased rain and longer hours of darkness.
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