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Thanks for this. I was beginning to feel that accurate measuring was a dark art. I know the theory but whenever I try to put it into practice, the results are worse than dead-reckoning. I just had to cut down plastic blocks by eye because the guide on the circular saw somehow didn't kept producing different results.
A question from a tinkering maniac: I want create a new, switchable 200A circuit to drive a welder but which leaves the cells isolated otherwise. If I link the cells together with a 600A BUK454 (http://pdf.datasheetcatalog.com/datasheet/philips/BUK454-200A.pdf). Am I right in thinking that simply connecting them across all of the positive terminals and applying 3V to all of the collectors will create a continuous series connection that can handle this current?I'd kind of like to find out before I try welding with my battery pack!
Okay, I'm getting kind of interested. I'm turning my van into a full time travel home which means I have 180AH of battery storage and, more importantly, 50A of solar panels on the roof. Now, assuming I'm driving in daylight, I can bypass the batteries completely (with their associated power loss) and dump the entire solar array into one of these and feed it directly into the diesel engine!It's not that high on my priorities right now but since I can get a 25 plate setup for £85 on eBay, it might be tempting in the near future.
Am I right in thinking that if I have 3 x 12V batteries connected in parallel and then I switch the polarity of the middle one then they'll now be connected in series and give me 36V?
I'm doing a self-conversion of a van into a full-time camper, fixing all of the annoying things I've put up with in pre-built ones. As well as networking the entire system to simplify wiring and modularise the system, I'm correcting the damned water gauges.Normally, these have three electrodes up the side of the tank to show which third the fresh/gray water is currently covered. For my version, I have two 40L detachable tanks and I'm going to use the weight (1L of water weighs 1Kg) to more accurately indicate the state of water, broadcasting the result across the internal network.Just another possible use for this.
Convert a Grindstone to Treadle Power
Homemade liquid nitrogen generator