duracell 1800 powersource

[omnivore]

could a UPS be used in place of a battery? this is obviously not something im actually trying to do. just curious of it.

http://www.newegg.com/Product/Product.aspx?gclid=CIjt-uz4-LoCFQrxOgodHWsAQw&Item=N82E16842206010&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-UPS-_-N82E16842206010&ef_id=UcSqfAAAAVUd@CYI:20131122174333:s

would you be able to use this as a power source for an e-bike? i realize this thing weighs like 70 pounds. Again Im just curious if it were possible and how well it would even work.

 

[bearing]

A UPS is basically a battery (almost always lead type) and a DC-AC inverter.

 

[omnivore]

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[bearing]

It would not be any benefit to plug a motor controller on the AC-side of the inverter, because the inverter is consuming power while it's working, so the bike would get less range compared to using the batteries without the inverter.

The batteries contains 36V*17Ah = 600Wh. If your bike consumes 60Wh/mile, you can ride 10 miles, in theory. In practice probably only half of that, due to some properties of SLA. With lithum you could ride all 10 miles, but you shouldn't really do it, because it will wear the batteries out faster.

If the inverter is 90% efficient, then 540Wh will leave the inverter, and 60Wh "disappears" as heat in the inverter. So if you go that route, you can only ride 9 miles.

There is no pro's compared to a bare set of batteries.

 

[omnivore]

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