best agm battery

[Poolside]

Oh. I might have meant Amsoil.

Either way I think they're missing out on selling some batteries.

[fivetimeson129]

poolside, now when the mutant topics start this senior citizen -really- learns some stuff. Speaking of Amsoil, I do not work for or benefit in any way from OTHERS selling the stuff (I do benefit from myself using the stuff) I can only offer this observation; we have a number of diesel vehicles a few of the Ford 6.0 Power Strokes and Amsoil is the ONLY lube that manages to stay inside the engine for any length of time AND Amsoil is the only lube that comes back from the single lab we trust in the US with no indication of the oil having sheared to any significant extent and this is having had to sustain the very complicated heui injection- believe me there was never a more vocal ignorant critic of Amsoil than myself, for fourty years or so I would only call it Scamsoil...

However in the interest of full disclosure while I have tried Amsoil in the bike we do usually use the BMW branded juice or Spectro, which I am certain is held in equally high esteem by yourself, as no difference was observed between the Amsoil product and any other, but I also have to note to all that I have never had a uoa done with the bike and I do change oil very often...

What does confuse me about the Shoria product is why anyone would purchase a battery that will drop virtually all the voltage potential until the cells warm up or wake up, as Shoria appears to acknowledge is an operating characterisic of their product.

Is is reasonable to presume that all of the current-yuk, yuk,-litium products function in a similar fashion? and if the mega dollar ones do not just what do they do differently?

[Poolside]

Belief systems are very effective.

[eakins]

i've had amazing service from deka agm batteries, especially for the price.
this is has the best price. not sure what size you guys need.
http://www.tristatebattery.com/produ...roducts_id=973

[JoelWisman]

Dito on both the last LOL. I cant do Amsoil for the same reason I don't answer the door for johovas whitenesses, and Deka makes the best high quality battery, bang for buck, but folks on this thread need a way bigger battery then the scooter sized one in that post LOL.

P.S. if your a brand loyalist to MK's Westco batteries, that's fine, East Penn Deka owns and makes them too :)

[Poolside]

From another perspective, the problem isn't the battery. What things cause/create the voltage drop? That's the problem. One example. The capacity of a lead-acid battery sized for the R bike is just barely adequate to do the job of starting the motor. And that was not a comment about lead-acid vs. lithium battery chemistry.

[rogernm]

Originally Posted by fivetimeson129

...

What does confuse me about the Shoria product is why anyone would purchase a battery that will drop virtually all the voltage potential until the cells warm up or wake up, as Shoria appears to acknowledge is an operating characterisic of their product.

...

In May 2011, I put a Shorai LFX18A1 in my 12GS and a LFX18A1 in my F650. The 12GS has been ridden almost daily (even through the winter) and the F650 gets ridden probably once a week or so by the wife.

Neither battery has ever had a charger on it nor has either bike ever failed to start.

It has to be said that the Li battery operates differently than the previously installed lead acid battery and it can be disconcerting at first. If you can’t get past that you will not be happy with a Li battery.

So far I’m happy with the Li battery, but of course after only 10 months the jury is still out.

[fivetimeson129]

poolside et al, yes belief systems based on facts are very effective indeed.

Dropping that much voltage has got to be damaging to the bike, I gotta know whether or not this situation is 'normal' for this technology.

[JoelWisman]

Originally Posted by fivetimeson129

poolside et al, yes belief systems based on facts are very effective indeed.

Dropping that much voltage has got to be damaging to the bike, I gotta know whether or not this situation is 'normal' for this technology.

When cold, LiFePo4 batteries drop a lot of voltage until they internally warm.

Here is a video of voltage drop in warm weather.

http://www.google.com/url?sa=t&sourc...P2ZGLY69bavhbA

[bracky72]

I'm using a 12 cell ballistic battery in my gsa. Far more cranking power then the oem battery and about 10 pounds lighter.

I knew A123 cells were right for me after several times this past winter my bike wouldn't turn over with the stock battery and I was able to start it with one of my r/c airplane A123 packs. I finally dumped the stock battery and put in a proper motorcycle A123 pack. So far so good. :)

[Poolside]

Originally Posted by fivetimeson129

poolside et al, yes belief systems based on facts are very effective indeed.

Dropping that much voltage has got to be damaging to the bike, I gotta know whether or not this situation is 'normal' for this technology.

This is definitely an oil thread. Another way to look at it is, the bike damages the battery, not the other way round. Output from a cold battery, any cold battery, is lower. It's an electrochemical device after all. Higher temperature produces more chemical activity just like washing your hands in warm water works better than cold. Some battery chemistries are more affected by temperature than others.

[fivetimeson129]

poolside, all batteries will have a vd of nearly 75% on a 'cold soaked' engine in the mid 30* F ??

Joel, tnks, this morning-about 47*F, I had a drop of about 2 1/2 volts, seem about right for a conventional agm (PC680) ?

[JoelWisman]

Originally Posted by fivetimeson129

poolside, all batteries will have a vd of nearly 75% on a 'cold soaked' engine in the mid 30* F ??

Joel, tnks, this morning-about 47*F, I had a drop of about 2 1/2 volts, seem about right for a conventional agm (PC680) ?

Depends on the load, but if the load is an ancient technology solenoid engaged, series wound, NON gear reduction starter driving a 1200 cc boxer, yeah it is pretty darn good.

The newest GS disconnect the starter when voltage drops below 8.9 volts for 500 consecutive mS, or 7.6 volts pretty instantly. I think thats a good benchmark for the older 1150 as well.

Assuming the 680 was fully charged, that means it went from about 12.8 to 10.3 volts. Thats very good cranking voltage on 1150 or 1200cc boxers which really are pigs for a battery to crank.

[fivetimeson129]

tnks again

[Railbender]

What are the battery options for the 1100/1150, besides the Odyssey PC680 and Westco? Deka lists their 51913 for that application, however if the listed dimensions are correct it won't fit.