Question for Electrical Gurus

[Mikerb]

Yep I was thinking about his specific circustance and since there is no simple solution why not take completely different approach. Go out in the car with bike and genny an hour early for a ride. Park up at a trail head....fire up the genny...get a flask out and have some lunch etc...maybe lube up the bike....then go ride!

 

[S D]

How about lube up Genny then go ride?
Whoops

 

[Mikerb]

Behave or Ill get my dad onto you

 

[Russell]

Neither option is feasible unfortunately as the garage in question is a communal one underground an apartment block .
We do keep a car in there hence the thought of an invertor from the battery.
I didn’t realise charging a 378w ebike Battery would be so demanding power wise.

Keep it in your flat or sell it and get one with a removable battery.

 

[sam.spoons]

375 'watts' (presumably you mean watt/hours) is just under 32Ah at 12VDC, you'll lose a bit as no system is 100% efficient so I'd estimate you'll use about 40Ah from your car battery so roughly half it's capacity.

 

[Zimmerframe]

This thread came back to life yesterday.

At the time we mocked energy recovery systems because generally on an EMTB there isn't the mass to recover the energy efficiently as there is with a car.

However, for the last 7 years a French company has been working on this and combining it with super capacitors.

Their first bike, available next year, has a small - approximately 50wh battery (650g), which can be charged with USB C in 1.5 hours. This is combined with the Super Capacitor and will theoretically give you a range of 30-70km's. Their bike is hub motored, but also has conventional SRAM brakes so I'm not sure how the energy recovery is working, presumably there's some sensors on the brake levers and the energy recovery kicks in first.

"The other advantage of supercapacitors is ecological. Durable, they are capable of lasting at least 15 years according to Anod. They also do not use rare earths or lithium and are only made of aluminum (100% recyclable) and coal. An appreciable environmental impact."

"However, this technology cannot store energy for a long time, and finds its limits at the start of a journey or on terrain with very low elevation."

anod hybrid

Votre prochain vélo sera hybride : un moteur qui recharge votre vélo à chaque freinage, et une batterie miniature qui tient dans votre poche, et des supercondensateurs qui permettent de toujours avoir une assistance, même sans batterie.

anod.com