The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Justin B. on September 03, 2008, 01:10:58 PM

Title: Affordable AGM battery alternative...
Post by: Justin B. on September 03, 2008, 01:10:58 PM
I have been trying out a fairly inexpensive AGM battery in the Junkyard LS.  So far - so good.  It has been in over a year on the "included" 500 ma trickle charger and it cranks the bike over just as fast as the PC680 does the others.  I just ordered another one for the "Garage Ornament", and at $52 and change plus shipping I think it's pretty good bang-for-your-buck...

Here is a link to the battery: http://www.gruberpower.com/gruberpower/advertising/batteries/cutsheets/58-ytx20-bs.asp

It's only an 18 AH battery but I doubt an R65 will ever notice the missing 2 AH.
Title: Re: Affordable AGM battery alternative...
Post by: not-so-fast-ed on September 03, 2008, 03:01:09 PM
Justin,  That's a steal!

 ;)
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 03, 2008, 03:28:55 PM
I don't have any long-term test data but I used to only get a little over a year out of a wet battery 'cause I never did seem to remember to keep them filled up.  And, when I did remember I usually got 'em too full and they dribbled and made a mess of things.  This battery is about what a wet battery costs so even if it doesn't outlast one the other benefits makes it worth it in my mind.  

I am a big Odyssey fan (have them in three bikes) but at well over $100 I doubt I will be buying any more.  I remember the first Odyssey I bought was about $64 including shipping...  Suraklyn tried one of the Panasonic AGMs in his R1200ST and after a year it didn't have enough cajones to crank the bikle on cold mornings...

The last one I bought was the "L" version, this time I bought the other.  Posts are reversed but I think for $30 difference I can either stretch enough slack or make me a 3" pigtail to extend the wires a tad...  For some reason the "L" version went up over $30 since the last one I bought.
Title: Re: Affordable AGM battery alternative...
Post by: MrRiden on September 04, 2008, 07:16:42 PM
I'm seeing it listed at that link for 92.65!
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 04, 2008, 08:02:56 PM
The UBX20L is but the UBX20 is $52 and the only difference I could see was the posts were reversed.  I ordered one and we'll see what happens...  The UBX20L was about $50 a year ago...
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 04, 2008, 08:04:59 PM
I just checked the link and you're right!  I just ordered one right before I started the thread and they were $52!!  I'm going to e-mail them and see what is going on...
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 08, 2008, 01:00:03 PM
A rep. from Gruber e-mailed me back and explained the pricing on these had been creeping up lately but they had the feeling it was a short-term spike and had not raised the selling price.  He said that after I bought mine they were compelled to raise the selling price.  The YTX20L-BS (http://YTX20L-BS) is $81 and change and has the terminals in the correct location.  This is the one I have "aging" in the Junkyard LS on the back porch.  $82 is still $30-$40 less than an Odyssey (although a few amps less power), a stock BMW, and only a little more than a standard wet cell battery.

I have proposed the idea of an "R65 Group" to them so we'll see what happens...
Title: Re: Affordable AGM battery alternative...
Post by: MrRiden on September 08, 2008, 02:34:35 PM
Thanks Justin. looks like you timed your purchase well! Can I use my battery tender jr on one of these AGM batteries or do they require something different.
rich
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 08, 2008, 03:03:29 PM
I just bought a two-station battery tender (http://batterytender.com/product_info.php?products_id=55) and I believe it indicated it was OK to use (confirmed on their web site), but I think these batteries come with a 500 milliamp trickle charger - at least the last one I bought did.  I have used a "Junior" on three Odyssys over the past few years...

Title: Re: Affordable AGM battery alternative...
Post by: Semper Gumby on September 10, 2008, 09:38:41 AM
Odesseys need atleast two amps to bring the battery up.  But if the battery is fully charged or close to fully charged then a regular Battery tender will be OK.

4 years and 4 months and counting on my PC680.

I am getting an uprated version of the Battery Tender to keep my PC680 in top form.

http://www.batterymart.com/p-battery-tender-plus-12v-5a-wp-battery-charger.html

TTFN,
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 10, 2008, 10:52:54 AM
Looks like a great charger.  I don't use the battery tenders to charge a depleted battery, just to maintain.  If I have a dead 'un then I have a switchable 2/6/10 amp charger for those situations...
Title: Re: Affordable AGM battery alternative...
Post by: Justin B. on September 10, 2008, 11:03:17 PM
Just got my new Gruber battery today, tomorrow it goes into the R65RS "Garage Ornament".  I will be sprucing it up a bit this winter and I think next spring will be a good time for it to find a new home.