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User Info Yellen Is Wrong AGAIN; entered at 2022-06-20 09:25:49
Elkad
Posts: 2809
Registered: 2009-09-04
Used nickel-iron batteries from a phone substation.
Last forever (I'd have no fear of installing 40 year old ones), handle deep cycles effortlessly.

Warning, they are MASSIVE.
Warning, they vent hydrogen heavily while charging.
Warning, you have to add water regularly.
2022-06-20 09:25:49