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Old 05-21-2021, 04:50 PM   #8 (permalink)
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A non-lithium option I've considered is, 12V battery booster/ power supplies, on sale periodically at Harbor Freight. For the price of one Razor replacement battery at WalMart, I can get a 12-V booster of twice the amp-hours. Two in series gets the required 24-VDC @ twice the capacity of the original at same cost. I'll pull mine behind in a 'tender' trailer. I've got a PV array to go on top, and can wire the modules series-parallel, along with a charge controller.
I'll try and find a use for the orphaned 80-V lithium-ions and charger from the dead Kobalt mower.
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