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minimum battery amp hours

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purplellama
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Rookie
Posts: 3
Joined: Wed Jun 03, 2015 10:43 am
Real Name: josh
Sex: Male
Years Riding: 15
My Motorcycle: yamaha xs650

minimum battery amp hours

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#1 Unread post by purplellama » Wed Jun 03, 2015 10:45 am

i have a 1982 yamaha xs650, heavily modded, kickstart only. it came with a tiny battery the size of a deck of cards. you turn the bike on to start it, and this battery has just enough juice power it up to start. in theory. in reality i think it's not quite enough. i've always had difficulty kicking it over, but if i jump it, it starts right up.

i don't have space with the current configuration for a typical battery, which is why the previous owner used this one, which fits in a hollow under the seat. the battery is rated at 12 volts/0.8 amp hours.

two questions.

1 - i'm wondering if anyone knows of similar small battery that would work in this application.
2 - can anyone recommend a minimum amp hour rating? would a higher rating solve my starting problem.

any help would be hugely appreciated.

thanks.
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pchast
Site Supporter - Silver
Site Supporter - Silver
Posts: 461
Joined: Tue Sep 02, 2008 7:04 pm
Real Name: Pete
Sex: Male
Years Riding: 9
My Motorcycle: 1980 Suzuki GS550L
Location: Athens, NY

Re: minimum battery amp hours

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#2 Unread post by pchast » Wed Jun 03, 2015 9:59 pm

Perhaps a lithium battery. Verrry small.
'80 Suzuki GS550L
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GS_in_CO
Legendary 300
Legendary 300
Posts: 300
Joined: Thu Jun 27, 2013 8:10 pm
Real Name: Ron
Sex: Male
Years Riding: 34
My Motorcycle: 1988 BMW R100GS
Location: Ft. Collins, CO.

Re: minimum battery amp hours

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#3 Unread post by GS_in_CO » Thu Jun 04, 2015 7:57 am

1000 word explanation is in his other identical thread here-
viewtopic.php?f=18&t=51267
Ron

Current: 1988 BMW R100GS (the 'numberplate' model)

Past: 1987 Yamaha XT350
1983 Honda CB900F
1980 Honda XL185S
1979 Suzuki GS425E
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