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Found 4 results

  1. Skxawng

    DIY Lithium battery

    My 110ah leisure battery has died and looking at replacements. I was thinking, lithium technology is far better suited to our application than lead acid: -You can use 80% of the charge without affecting the lifespan as opposed to 50% with lead acid. -Lithium has much longer lifespan (around 3x more charge cycles) making it a better investment. -It has a much higher energy density so will take up less weight/space for the same capacity. -Charge times are much faster. -Lower self discharge. -Orientation doesn't matter. So why do we all use lead acid? I looked for an equivalent 12v 110ah battery on ebay. Same form factor as mine but lithium and 1/3 of the weight. £800!... So I thought about building one. Electric cars like Tesla and nissan leaf, laptop batteries (as well as solar power walls) use an array of 18650 Lithium cells. They look like AA batteries but a bit bigger. They typically have about 3Ah capacity and cost a few quid each. You can buy grids that they fit in, build it to your own specifications of volts and capacity by the number of cells in series and parallel then a £3 BMS board controls the charge/discharge and monitors the cells. There's plenty of vids on utube and it's easier than it sounds to build with very little electronics knowledge. I'm going to have a go building one. Just wondering if anyone else has thought about using these 18650 cells?
  2. Green Pro Clean Ltd

    Hot water FIT conversion

    So the van I am currently using is a cold one man system. Two things are in my mind. 1: winter's coming 2: I have some schools over half term that are minging and hot will be a big advantage. Now I know nothing about diesel or LPG conversions so please don't ask. What I do know is that cheap portable Propane shower heaters work really well. So that's the plan. Fit a DIY unit. Now this will be the 3rd one of these I have done so when all the parts arrive in the next few days i will do a real time video to show how simple it is to do in 30 min or less. For now here's the shopping list. Heater Hose. Regulator (this time I went with one with a guage to make any potential trouble shooting easier. Big azz spanner - you need this size to fit the regulator. With the exception of some PTFE tape and a couple of jubilee clips that's pretty much it. Including the propane bottle all in under £150. Video to follow as soon as parts are in stock.
  3. Kasper Sjostrand

    My way of getting (almost) free water

    Hello, there. Here's some inspirational pics/descriptions to the wfp-people, feel free to comment, what's good n what's bad, suggestions etc. This particular page is in English WF, Water fed pole systems, rainwater tank, water harvesting, cleaning windows
  4. My second DIY trolley copied from Mark Munro. [media]http://www.youtube.com/watch?v=1V6geAu43Ss[/media]
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