Anyone seen a 3.5" x 3.5" x 4" 12 volt?

P

punk

Member
I can't find a 12 volt battery to fit in my 1970 ct70's original 6 volt battery box.

Had to make one out of a bunch of AA batteries.

Thanks,
Punk
 
Weekend

Weekend

Member
Just my 2 cents

Hi all:
After reading you thread and Long Crapper reply I set a e-mail to the site and told him I was going to 12v from 6 and what it would be in. My bike will have elect. start as well as the norm and he e-mailed me back and said he could not say weather it would or not. The battery was for amp hour draw, did not know how it would act as a starting battery or what it would with a charge from the bike.
 
Dan_Lorenze

Dan_Lorenze

Member
I use a Yuasa 12v battery, it fits in the stock CT carriers without the rubber inserts. Part number YB 2.5L-c-1 . I got from my local dealer... Very pleased with them...

Dan<!-- google_ad_section_end --><!-- / message --><!-- sig -->
 
unit5alive

unit5alive

Member
retrobikes has a 12v battery to fit the small 6v battery box ,but I don't think its high enough current for the electric starter ,its listed as a c3 wet cell 12v, part #100-405 , but its been out of stock for months now , contact joe at retrobikes , I believe the most common number for this battery is 12n2.5-3c , Craig.:monkey: <!-- google_ad_section_end -->
 
6

69ST

Well-Known Member
Weekend said:
Hi all:
After reading you thread and Long Crapper reply I set a e-mail to the site and told him I was going to 12v from 6 and what it would be in. My bike will have elect. start as well as the norm and he e-mailed me back and said he could not say weather it would or not. The battery was for amp hour draw, did not know how it would act as a starting battery or what it would with a charge from the bike.
Click to expand...

4amps x 12v = 48 watts
I doubt that's enough to power an electric starter. It's closer to what a laptop computer needs to run.
 
a_smerek

a_smerek

Member
Calculating the power needed for cranking an electric starter is a complicated thing. It might be best to measure the peak current the starter draws by using a car battery and measuring the actual current.

You cannot calculate the battery peak output by multiplying the amp hour rating by the voltage. A 2.5AH battery that is 12V will have about 20CCA, which does not give you 48W but rather 240W.
 
6

69ST

Well-Known Member
Dan_Lorenze said:
I use a Yuasa 12v battery, it fits in the stock CT carriers without the rubber inserts. Part number YB 2.5L-c-1 . I got from my local dealer... Very pleased with them...

Dan<!-- google_ad_section_end --><!-- / message --><!-- sig -->
Click to expand...

I've done this, too. However, I've noticed wear patterns on the battery every place where the metal comes into contact with the battery and a fair amount of powder that used to be part of the case. No idea how long it might take to wear through the outer casing but the thought of that happening is unsettling. Even with a dry cell, a perforated battery shell would be nasty. At the very least, wrap some electrical tape around the battery box, that'll buy some time and is easy enough to replace when it wears through.
 
a_smerek

a_smerek

Member
You can use the Yuasa YB4L-A to crank a lifan 110cc with electric start. It is a 12V 4AH battery but gives 56CCA which is enough to run the starter. The battery is larger than stock which means modifying the battery holder and running the battery in the long direction. I'm not sure if a stock seat would close with this battery, mine is not stock and doesn't have the tool holder. As far as metal surfaces rubbing, I was thinking of placing something along each of the sides to protect it, not sure what material to use yet.
 
unit5alive

unit5alive

Member
Hey guys here's a battery that should work , Batterywholesale , go to universal batteries, to #UB1250, its 12v , 5.0ah , L=3.54 W=2.75 ,H=3.98 , under $20.00:)
 
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