I need a 36V battery for a project of mine. Eventually I will buy a li-ion pack but now when prototyping and testing I don't want to spend a lot of money so I'm looking at cheap alternatives.
I'm considering making a 36V battery from 3 12V lead acid batteries. I found 9Ah ones that would cost me about $30 total but I don't also want to spend that much on a charger. I have a car battery charger for batteries up to 65Ah (6A max). I'm thinking if I put my 9Ah batteries in parallel that would draw around 3A I suppose which should be fine for the charger but I'm afraid if it's going to be able to maintain the proper CVCC modes because it wouldn't know it's charging 3 batteries and it most certainly wasn't designed for this.