the battery running the electrics started life about 4 years ago as a winch battery on my offroader. it did sterling duty for a year then i scrapped the land rover and moved on. it sat around for a year or so then did its duty as a electric fencer battery. unfortunately for me, despite repeated warnings to do so, the electrolyte level wasn't monitored. so when i got it back last year for lorry use it was boiled dry. which narked me off somewhat. especially as it was 'just' out of warranty. so i topped the electrolyte up, charged it (and this time it took a charge!) and tried to use it. it seemed ok, but well, it died on its ass the first time i used it in ernest (inconvenient!) so i decided to do something about it.
first was a generator so i had power for my tools and didn't need to run the batteries down during the day. that has been shown up there^^^ so no need to dwell on that.
second is to replace the leisure batteries (yes, plural now!) with proper leisure batteries and obviously new. and as i have a halfords trade card, i found them to be the cheapest supplier. and convenient for warranty, too.
so out with the old
and in with the new.
next was adding a snatch block to the winch so it has less of a hard time pulling round a corner..
i modified this by using a hole saw to cut out 2 circles from some plate, welding them into the massive holes in the snatch block and re drilling the hole at 22mm for a m20 bolt. much better.
last but not least the last two fans arrived. i got fed up with waiting for them from ebay, so i bought a pair on amazon.
put them in the box, and finished the assembly, all tested and ok.
i used usb fans because i want the fans to only run when the generator is running. if i used 12v fans and connected them to the 12v out on the generator then when the generator is off it would backfeed to the fans from the batteries, not what i wanted. but if i use usb i can just power them off the usb port on the generator, and when i kill the gene, they'll go off too!