Quote:
Originally Posted by CosmicTrucker
I'm also doing this to my electric carts. I've swapped the motor and controller in my 2019 ClubCar Onward lifted to a SilverWolf A/C motor and controller along with a Dakota lithium 48v battery.
I'm very interested in building my own battery for a future swap. The scary part about how these lithium batteries work is how they give little to no warning before the low voltage cutoff leaves you dead on the road. I have a 48v server rack battery that I'm considering installing along with the Dakota as an emergency backup to get you back home or to the next electrical outlet.
I would be interested in joining a club if we can get one set up.
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Far as lithium ion batteries and little or no warning. I used to sell flash units with different battery options. There is no such thing as a perfect answer yet we demand one. Lead acid batteries the voltage falls off gradually as the battery, or pile of batteries, pile of cells runs down. That makes it easy to measure voltage and get a guess as to remaining charge. Lithium ion batteries have first of all dropped in price, compared to what they used to cost.
For their weight, compared to LEAD acid, they can store far more electricity. They have a flat voltage curve, the reason why a lithium ion cart does not slow down as the charge is withdrawn. A proper battery pile should prevent total discharge. In a pile of cells, they are not all perfectly matched. If, you run the battery too far down the stronger cells will reverse the polarity, destroy, the weakest cells.
An old yet modern electric car, truck system. Same as a rechargeable drill, you own more than one battery pack and trade a charged one for a discharged one. The design calls for easy to switch batteries-perhaps an assembly under the cart as it was done with electric trucks.