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Ingaid
28 April 2015, 2012
64846485

Hello,

Great to find this forum. I want to buy an electric bike over here and i have a question that you might be able to help.
I want to buy a bike that can drive for 70km-100km speed less important.
i have few options
1. 72v battery with 1200w engine
2. 96v battery with 1500w engine
3. 96v battery with 2000w engine

all batteries are car batteries and not lithium (hard to find a lithium bike in china)

thank you

NonPolluter
28 April 2015, 2118
First of all, over 60V DC can kill you, if the current crosses through both your arms, so I don't recommend any of your 3 choices.

"Car batteries" are flooded and are too heavy on an elmoto.

2000 watts motor (not called "engine", in these forums) won't take you over, say 55 KPH, regardless of voltage.

Maybe you should be checking out the electric bicycle forums, like:
http://endless-sphere.com/forums/viewforum.php?f=21


Good luck, you have much research ahead of you.


On second thought, since you're from China, where 20 million electric bikes are manufactured a year, why aren't you buying in China?










64846485

Hello,

Great to find this forum. I want to buy an electric bike over here and i have a question that you might be able to help.
I want to buy a bike that can drive for 70km-100km speed less important.
i have few options
1. 72v battery with 1200w engine
2. 96v battery with 1500w engine
3. 96v battery with 2000w engine

all batteries are car batteries and not lithium (hard to find a lithium bike in china)

thank you

frodus
28 April 2015, 2127
Oh bull..... His three voltages are just fine. We've been building bikes in the 72V to 130V range for years with no fatalities and no issues past a few large sparks. My first bike was 72V and second was 108V.

Yes.... Technically any voltage can kill if the current is high enough and the resistance of your skin is low (salty wet hands).....but So far no fatalities on this forum and any others.

Ingaid
28 April 2015, 2144
Oh bull..... His three voltages are just fine. We've been building bikes in the 72V to 130V range for years with no fatalities and no issues past a few large sparks. My first bike was 72V and second was 108V.

Yes.... Technically any voltage can kill if the current is high enough and the resistance of your skin is low (salty wet hands).....but So far no fatalities on this forum and any others.

thanks for the info, but still looking for an answer, the price different is not that high.
by the way, so far i lived in china for 2 years still never heard about any fatalities from Electrocution.

which one should i buy from the options i have?
thank you

Ingaid
28 April 2015, 2146
I'm buying it in china, but wanted to know which option is preferred.
by the way i drove them all and i got to 60-70 KPH with all of them.
but again i'm looking for distance, not speed.

Stevo
28 April 2015, 2202
I don't understand why Li batts are not an option in China. I would think they would be less expensive and more available there than here.

Ingaid
28 April 2015, 2206
I don't understand why Li batts are not an option in China. I would think they would be less expensive and more available there than here.

Li batts in China are available, they are cheaper than any other country I believe, but any of the bikes they making here don't have Li batts because of some weird rule they have (bike speed can't exceed 15mph inside shanghai, which is stupid cause most bikes do go faster than that... chinese ppl, go figure)
any answer or advice for my question?

Ingaid
28 April 2015, 2209
I've been told that the 96v + 1500w motor can drive easily 70 - 90 km before next charge, make sense?

Stevo
28 April 2015, 2338
what are the aHr ratings on those battery packs? I would suggest that the higher voltage packs will give you more range, unless the lower v pack has more capacity. Maybe you can add another pack parallel to double your range.

Ingaid
29 April 2015, 1958
this is the link for the bike with the info (it's in chinese)

http://item.taobao.com/item.htm?spm=2013.1.w4004-3230635294.12.kL42Yy&id=5535566517&smtmd=wagbridge-malldetail0.44715866739153?

http://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-10179276306.61.f3sgbf&id=42641236758