After discussing some properties of electricity and common methods to generate it, it is time to talk about how it can be stored. There are different types and designs of rechargeable batteries. This article is about deep cycle lead acid batteries. The principle difference between deep cycle lead acid batteries and those that are used in almost every car is the geometry of the electrodes. The former is designed to provide a small current over a long period (hours), while the latter to provide a large current for a short period (seconds). Continue reading Off Grid Power Systems III – Lead Acid Batteries
If you are interested in off grid power systems and/or already rely on them – as we all do more or less here on Great Barrier Island – you may ask: ‘How much do I need to know about things like photovoltaics, wind-power, batteries and electricity?’
The answers are straight-forward. You don’t need to know anything, a tradesman/-woman will sort you out and you can know as much as you want about these topics. It is 2013 folks, just type what you don’t know into a search engine and you will be presented with brief and exhaustive explanations.
My intention here is to provide you with a conceptual understanding – if you will a foundation or framework that allows you to build up further knowledge – and to also give you some rudimentary examples and calculations. I’m not an electrician and am also not in the business of providing off grid power solutions. My motivation is to share with you what I know and obviously also to continue learning via this process. Continue reading Off Grid Power Systems I – Electricity