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Thinking abut a cordless hedgetrimmer
On 01/05/2021 19:32, williamwright wrote:
On 01/05/2021 19:00, The Natural Philosopher wrote: What enormous strides? The energy/weight figure for battery is still light years behind petrol. Bill No, not light years, about 50%, That doesn't equate with a vehicle's range with a tankful of petrol compared to a battery full of leccy. And the battery weighs a lot more than the petrol. Bill no, its fairly close - leccy cars have about 200 miles range and petrol ones 400 - 600. But its oranges and apples, What counts is the total package, and an electric power train weighs way less than a petrol or diesel one *if you exclude the battery*. Mains powered hedgetrimmers ought to be the lightest per unit power, of all. But the actual stats that I looked up on a Stihl,. showed that the battery equivalent to my baby Stihl was more expensive, of similar power, slightly less weight but only half an hour cutting time. Operationally as with a car what counts is the recharge time - seldom less than an hour if you want the battery to last. It takes me less than a minute to refill oil and petrol... -- “Progress is precisely that which rules and regulations did not foresee,” – Ludwig von Mises |
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