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Hi Guys, I have acquired a collection of batteries over the last year. Some early Purus car batteries. From what I have read somewhat useless. But two LARGE EV Buss batteries. Looking for more information on the cells to see if I should build them into something or sell them. I searched on all...

Hi Guys, I just picked up a new-looking used local Renogy 60 amp DC/DC Charger (none of my friends said I shouldn't :) ) and I would like to bench test it. I have a large HP bench power supply with adjustable volts and amps. Cables, meters, and a lead acid flooded battery. My thinking was to...

Ok, I ripped apart (very carefully) one of my bus batteries. It has 6 banks, each holding 40 of these cells. If they are around 3 volts (the cell has no voltage) it would be 120 volts. With the 6 packs, it could make three phases of 240 volts. The bus is three phase. Just guessing. Want to...

Hello All, Looking for a smart battery charger 12 volt. 20 Amp or (??) I have: Lead acid - motorcycle to Ford backhoe AMG - cars and trucks Gel - small to medium (UPS) Lithium - eBike to 100AH in camper I have read a review once here, but I can not find it, that talked about good ones around...

Hello Everyone, I am starting a small SpaceKap RV build and will need some advice on the 12 VDC solar setup. I have a collection of parts and pieces to make into a system. I am a safety conscience person and generally over engineer all my projects. I have a full home shop to build and make...