I believe that I can say with high confidence that I now have the first solar powered weed wacker on the block. It's of the EGO brand featuring a 56 volt 2.5 amp-hour battery. As of last weekend it is being charged using a 90 watt solar panel that charges a 1 KWH LiFePO4 battery via a pure sinewave inverter. The charger is supposed to consume 210 watts. I noted a peak draw of 18 amps off the battery or 240 watts when charging after cleaning up the lawn.
Just to be clear, this outcome was never the intent of the solar installation. My Stihl weed wacker gave up the ghost and I thought of trying a battery powered option. The garden shed where all of my OPE is stored has this off-grid solar setup with excess capacity. I doubt that I've used more than 1/2 gallon of gas in the weed wacker per year in the past, but it will be zero gallons going forward.
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