Lithium Battery? - Kawasaki KLR 650 Forum
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post #1 of 54 Old 06-12-2015, 08:14 PM Thread Starter
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Lithium Battery?

Has anyone changed out their heavy lead acid or AGM for a new small very light weight lithium ion? The price has dropped allot down to 70 bucks. I will be getting one if.....when the current one gives up!
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post #2 of 54 Old 06-13-2015, 08:05 PM
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lithium Batterys

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Originally Posted by Drifter. View Post
Has anyone changed out their heavy lead acid or AGM for a new small very light weight lithium ion? The price has dropped allot down to 70 bucks. I will be getting one if.....when the current one gives up!
There's an interesting write up in April issue of Motorcycle Consumer News.
I made a copy. FWIW:

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post #3 of 54 Old 06-13-2015, 10:49 PM
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Good points to consider, regarding a lithium battery replacing a "standard" battery in a motorcycle.

Now, slightly different product and application: Lithium JUMPER battery.

These little devices, about the size of a deck of cards, are DYNAMITE! Believe it or not, these little rascals will turn over and start V-8 automobile engines; thumper motorcycles are no problem.

Bought one on sale at Cycle Gear; promises 200 cold cranking amps; has flashlight and charging ports for cell phones, cameras, etc.

After I bought my little bitty jumper battery, I realized: I don't need no stinkin' kick-starter!
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post #4 of 54 Old 06-14-2015, 01:31 PM Thread Starter
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Would a 120 cca lithium battery start a KLR? Thanks for the article.

Could the little jumper battery be put into full time service in the bike?
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post #5 of 54 Old 06-14-2015, 06:14 PM
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Originally Posted by Drifter. View Post
Would a 120 cca lithium battery start a KLR? Thanks for the article.

Could the little jumper battery be put into full time service in the bike?
Question 1; I think so.

Question 2, I don't think so, on a long-term, sustainable basis. As the MCN Magazine article says (for Lithium batteries in general, compared to lead-acid batteries), not enough amp-hours. Haven't checked the specifications, but I imagine the little jumper battery's capacity is 'way lower than the 14 amp-hours of the OEM battery.
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post #6 of 54 Old 06-14-2015, 07:03 PM
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Quote:
Originally Posted by Drifter. View Post
Would a 120 cca lithium battery start a KLR? Thanks for the article.

Could the little jumper battery be put into full time service in the bike?
#1, IF all is well with your bike and its warm outside, probably. But even that article kinda' sorta' suggested going as big as would fit or one could afford. At least to me.
The standard KLR battery as between 190-210 CCA if I remember correctly.
And it might could continuous crank long enough to damage the starter motor!

#2, I wouldn't even think of trying. But a 50 mile ride out of the boondocks?
I might try that!

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post #7 of 54 Old 06-14-2015, 09:50 PM
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#2, I wouldn't even think of trying. But a 50 mile ride out of the boondocks?
I might try that!
On a Generation 1, the length of the ride out of the boonies is of no consequence, since the ignition is AC-powered. However, the little booster hasn't much storage capacity; lights and accessories might draw it down in a hurry. Then, you'd need ANOTHER booster battery to start it!

Here's data on the Cycle Gear jump starter; only 8 amp-hours, vs. 14 amp-hours with an OEM battery:

http://www.cyclegear.com/LIL-LIGHTNI...d-Jump-Starter

Yet, with up to 400 cold cranking amps in your shirt pocket . . .

Last edited by Damocles; 06-14-2015 at 10:00 PM.
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post #8 of 54 Old 06-15-2015, 08:12 AM Thread Starter
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After reading that article a couple of times i think i disagree with it somewhat, i have several devices that have lithium batteries and have not noticed the sleep mode he mentioned. My weed eater and blower run a 18 volt battery both take right off at full speed when hot or cold if they are charged, same with my kids riding tractor.

My golf cart had a 250 cca battery, i replaced it with a 120 a year ago no problems at all even sitting for a couple of months, it is a lead acid battery.

Harbor freight has these jumper batteries cheap i think i will give one a try. If it will start a diesel truck, our little tractor engine should be no problem.
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post #9 of 54 Old 06-15-2015, 09:10 AM
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Unlike an engine starting system, as on a KLR650, requiring short-duration high amperage, a weed eater, blower, or maybe even a golf cart (an electric one) uses much lower current, but over a longer period of time.

I can't vouch for the letter in MCN Magazine posted above, but--the nature of electric power requirements is different for different applications. The cold cranking amps are important for the initial and brief demand of an engine's starter motor, not so much to other electric motors operating a lower continuous current levels.

The prospect of a lithium battery for a KLR650 has intrigued me; would like to try one (or for someone to try one) and see how it goes. Of interest: How do lithium and lead-acid batteries compare with respect to powering heated clothing?
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post #10 of 54 Old 06-26-2015, 07:11 AM
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Of interest: How do lithium and lead-acid batteries compare with respect to powering heated clothing?
I don't think you should ever run your heated clothing off the battery. Better to use the alternator, that is, only when the bike is running.

If you start the engine and immediately turn on heated gear, the battery may charge at a slower rate, but should charge fully eventually. That "eventually" depends on how long your bike cranks.

My 1st-gen with stock charging system easily charges a battery while running extra lights and a 70+ W jacket.

Lithium battery sellers often give an Ah rating that is supposed to be an "equivalent" to the lead-acid measurement but it's deceptive. Even lead-acid can be measured over different time periods to get different Ah numbers.

While lead-acid produce less Ah when cold, Lithium produce fewer amps when cold. If you start your bike at freezing the lead acid will do it for a while but will quit sooner than in summer. The Lithium may have trouble starting the bike at all. Getting a bigger lithium battery can be overkill for summer but be adequate in winter.

I'm still on the fence but haven't had to buy a battery for a while. So I still don't have lithum in the KLR.
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