Mechanics and Fixing Any Questions Answered

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Not/random-user

OK, bare with me…

I run an exposure toro light and my mum wants the ebike version fitted to her bike. I’m not good with electrical theory so can someone look at my working out?

If the ebike like is the same brightness as mine on max (which it is) then it will consume 10,8000mah for running at max for two hours. If this is watt hr it would be 64.5? Her battery is 460whr so would the light use 14% of her battery over two hours?

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grams in reply to @Not/random-user

You can assume a rechargeable is 3.7 V unless otherwise stated, so your light is likely 3.7 x 10.8 = 40 Wh. That would correlate with it containing three 18650 cells, which other big Exposures do.

So your light consumes 20W of power, or 20/460 = 4.3% of her eBike battery per hour of runtime.

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Not/random-user in reply to @grams

Thank you!

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