battery for distance for new kit 1000w 48v ebike kit from ye

mrdc

1 mW
Joined
Jan 11, 2014
Messages
13
what would be a good choice for a cruiser bike
city ride
flats and small inclines
want lots and lots of distance 80=100 kms
thanks
 
Hey Mrdc...

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80 to 120 kilometers is a long way for an e-bike. You will need a 45 to 55 amp hour battery pack for that long a distance. That is a huge battery pack for a bike. You would probably need to put some of your pack in the triangle of your bike and some more in panniers over the rear wheel. I always recommend, if at all possible, putting the battery pack in the triangle of the bike for the best balance and handling. Too much weight on the rear rack makes the bike unstable.

Why do you want to travel so far on a bike anyway?
 
You'll need 14wh per km at 32kph, so that's 1400wh for 100km. So that's 32ah minimum of 12s (44.4V) rc lipo. Multiple AH times nominal voltage of pack to get the WH. I'll let you do the math for other types.
 
Or if you were to choose a 48v lifepo4 battery, you would need two 48v 15 ah batteries. 30 pounds of battery.

Riding slower, 25-30 kph, you would have close to 50k range with just one 48v 15 ah battery. One 48v 15 ah battery is pretty easy to carry. It would also have about 750wh of real world usable watt hours.

Cruiser bikes are very sturdy, so two batteries in the rear in panniers or boxes on each side would work, and a front hub works fine on cruiser bikes with steel front forks. Other less expensive bikes do not have the strength from side to side to carry much of a load. But a steel beach cruiser will.

The question is, do you have the budget to buy $1200 worth of battery?

Can you recharge for the return trip? That can cut your battery needs in half.
 
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