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Will just did a video featuring their 24V Powerwall model https://bigbattery.com

Yes

The epsom salt comes after the baking soda, near as I can figure it was someone's idea of changing the battery chemistry, works for some, I didn't have any luck. After flushing the cells of my second battery with warm distilled water a couple times, I filled it with straight distilled water and...

Here's the process I used for the battery restoration and a small correction it was 7-10 ounces of baking soda not 70...damn those decimal points. Of the three 30 year old batteries cleaned I got one to work, the only one I didn't use Epsom salts on after de-sulfating with baking soda. Of the...

Modified one of Wills designs to accommodate the HQST 100 Watt panel kit, which I've mounted using spacers so that the wires can go behind the base board and insure better ventilation. Installed in a scrap built power shack attached to an old swing set, framed up and insulated into a greenhouse...