Wattage calculation to charge bikes from a gas/petrol powered generator

Tidy Darts

New Member
Sep 1, 2020
2
0
Rossland, BC
An electrical charging question if I may for all the electrical experts / boffins out there.

I'm in Canada using 110V.

I've done a search and I can't find this specific topic being previously discussed.

My wife has a Turbo Levo and I've just ordered an SL (based on Rob's videos and my local bike shop having one in to demo). I'm trying to do the calculations to work out whether a small gas powered inverter generator such as a Honda 1000i which produces 900W would be big enough to charge both bikes at the same time when we go off grid.

The Turbo battery charger is 42V4A, so if I multiply Volts x Amps then I get the Wattage of 168W

The SL charger is 54.6v x 3A = 163.8W.

Combined draw of 332W.

So I should be able to charge both batteries at the same time at their maximum charging rate?

Or have i fundamentally misunderstood this (this is quite possible as I'm a carpenter!)

Many thanks.
 

Flatslide

E*POWAH Master
Jul 14, 2019
265
250
Dunedin NZ
Yeah, a 900W generator will charge both simultaneously with ease. 332W is under half of its max output. Your maths is correct :geek:
 

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