it's not off-topic as far as I'm concerned. How's your MX-5 beast coming on Steve?
Laaaaathe, Been on me shopping list, since I was twelve. Envy you.so I bought a small lathe
Thanks Adam. I get loads of inspiration from everyone else's projects – but the mistakes are all my own.Well done, very cool!!!
Thanks. The 32157's are pretty awesome. I tested them to 550 amps, 70 to 75C. I wish there were more of them. There are none to be had with screw terminals. I took some risk getting these from China. My packs have room for 4 parallel but I only have enough for 3 parallel at the moment.DIYguy: Those A123 packs look great. I've not seen the large cylindrical A123s in a DIY project before. How did you get hold them?
Thanks for the info about the Vicor modules. The micro converters I'm using do current limit at 20–25A, though I wouldn't want to use them this way as they get very hot and fizz quietly. I've charged a 5p block of almost empty LifeBatt cells with a single DC converter, but it takes a lot of cooling as they're only 80% efficient. I can dig out the datasheet if you like. One useful feature is that you can parallel up to three of the converters and designate one of them as the master by adding a single resistor. This gives you a 60A single cell charger.