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  • Post in thread: How much can 4x 100a BMS draw in series?

    It's for an electric tractor conversion, so it's got a drive motor + the power take-off for mower deck, snow blower etc. I probably wouldn't ever run both motors full power during normal operation, but it would be possible, so before dropping $$$$ on batteries I would want to make sure I am not...
  • Post in thread: How much can 4x 100a BMS draw in series?

    It's a 1980s garden tractor. Originally 16hp kohler engine on a hydrostatic transmission. Mostly for mowing and snow blowing, but I also have a wood chipper, 48" tiller, and several ground-engaging tools. The drive motor is 48v 1800w, mated to the original 30:1 gear reduction, which is more...
  • Post in thread: How much can 4x 100a BMS draw in series?

    Pardon the newbie question, I tried searching the forum and couldn't find an answer. I am currently looking to buy 48v 100ah of Lifepo4 batteries for a project, and I expect my maximum constant drain will be around 70 amps. The 12v 100ah batteries all come with 100a BMS (with 200a surge), but...
  • Post in thread: How much can 4x 100a BMS draw in series?

    All the 48v 100ah Lifepo4 batteries I am finding are for golf carts, and they are double the cost of buying 4x 12v. But Google has been getting basically useless lately, so maybe it's just not showing me other options. Are there 48v 20ah batteries I can run in parallel, or something like that?
  • Post in thread: How much can 4x 100a BMS draw in series?

    The original hydrostat was shredded. The entire tractor was junk, I only got it because it came with a front end loader attached to it that's going on my other tractor (22hp v-twin). So I am deleting the hydro and direct-driving the 30:1 gearbox. Top speed at 3250RPMs was originally 7.2mph. The...
  • Post in thread: How much can 4x 100a BMS draw in series?

    For comparison, I looked up the numbers and the GE Elek-trak tractor had a 1hp drive motor and their largest accessory motor was 2.5hp for the snow blower. This was considered comparable to a 16-18hp gas tractor. The 36" tiller used a 2hp motor.
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