Ultra Light Batteries

Discussion in 'Vendors' started by herrhelmet, Oct 17, 2010.

  1. "A"

    "A" numbum

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    I was under the impression that this battery technology is very sensitive to undercharge and overcharging. Are normal motorcycle charging systems really suited to these batteries? Is there some estimate on the number of cycles that can be reasonably expected?
    #21
  2. herrhelmet

    herrhelmet A Serious Man

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    I used to be under the same impression. Learned about them from RC model guys. These batteries are extremely robust and most motorcycle Charging systems (functioning ones) will not harm them at all. Anything in the 14.5 +/– range.

    Put it this way. If your bikes charge system is over 14.5 volts you are damaging your lead acid battery too. If you were to ride your bike every day and start it 4 times using 18 second pulses (which you would never do) they would last 6,000 cycles or 4 years.

    They would be sensitive to a voltage drop down to 7 or 8 volts, but your bike would have quit starting a while before it got there and you would be trouble shooting your motorcycles charging system.
    #22
  3. LukasM

    LukasM Long timer

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    Do you happen to know if there is some type of controller to shut them down when they get to a voltage low enough to cause permanent damage?
    #23
  4. herrhelmet

    herrhelmet A Serious Man

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    I'm looking into that right now. I can order these with cell balancer connections, but those are really for the Radio Control people who have to manually charge. They are for trickle chargers only and aren't connected to the heavy capacity wires from your battery to your bike that would be an auto-shut off.

    I have a cell balancer with a low voltage alarm that plugs into the balance connector on one of my test batteries. It's never gone off, because I've never had my voltage drop that low. I think I will abuse it and see what happens... I think this would be a great option to offer. Probably add $35+ to the total cost, but would offer peace of mind.
    #24
  5. NSRDR

    NSRDR Adventurer

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    I got my battery today. Wow, i knew it would be small but this is REALLY small, like smaller than a can of coke and very, very light.

    It came very well packaged and everything is as presented.

    <a href="http://robynashton.com/wp-content/uploads/2010/10/IMG00052-20101028-2205.jpg"><img class="alignnone size-medium wp-image-491" title="IMG00052-20101028-2205" src="http://robynashton.com/wp-content/uploads/2010/10/IMG00052-20101028-2205-300x225.jpg" alt="" width="300" height="225" /></a>
    <a href="http://robynashton.com/wp-content/uploads/2010/10/IMG00055-20101028-2208.jpg"><img class="alignnone size-medium wp-image-494" title="IMG00055-20101028-2208" src="http://robynashton.com/wp-content/uploads/2010/10/IMG00055-20101028-2208-300x225.jpg" alt="" width="300" height="225" /></a>

    Thanks for everything!

    R
    #25
  6. dang

    dang Been here awhile

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    Herr,

    There are stand alone low voltage alarms which plug in to balance connectors. They cost about $5 wholesale and let off a pretty piercing tone when any one cell drops to below a certain threshold voltage. There is a level of safety there if you are a savvy operator because the first time the alarm goes off will be when the battery is loaded. If you moderate the load at that time you can get a little more juice before killing the cells. For instance you might pull a headlight bulb so the FI can operate.

    For a moto the idea of a low voltage disconnect is a little troubling. If you're 50 miles out you might like to make the choice between killing the battery by running and hiking out. You're packs are reasonably priced, I for one would happily risk killing the cells to get home if need be.

    Dan

    #26
  7. herrhelmet

    herrhelmet A Serious Man

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    Dan, I'm going to order some of these with the balance connectors and try those out. I think people that buy these to make their bikes lighter and therefore improve performance would only encounter a low voltage situation if their bikes charging system failed. The alarm would be useful to me.

    I'm about to introduce an even smaller starting battery that is so light and tiny you could carry it in your camelback as a spare. It will be inexpensive too.

    If I was going on a long cross-country trip I would bring it along and simply plug it into my quick connector.

    I also plan to post a LifePO4 fact sheet to answer a lot of questions.
    #27
  8. mrprez

    mrprez KJ4WMZ

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    I received my battery today and it only took a few minute to install. Took longer to clean out the battery box than to do the actual installation. My starter spins much faster now. The bike starts in a split second. Very happy to lose that extra weight.
    #28
  9. tmotten

    tmotten Lefthand ride Dutchy

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    As a royalty I'm happy to accept one. :deal
    #29
  10. Fishyhead

    Fishyhead Eremikophobic

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    Can you make a 12 cell unit for my RC51? Maybe the LC8 guys will get into this too :)
    #30
  11. herrhelmet

    herrhelmet A Serious Man

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    Hey Duy, Yes I can. I will have 3 types------ 4 cell, 8 cell (available now) and the 12 coming out in December.

    I have a rider testing the 8 cell unit on a Ducati 1098 for trackdays only. For daily drivers I'm going to add in a low voltage alarm as an option. (They don't like to be drained by alarms or driving lights being left on etc.), but the smaller dirtbikes like Husky 450s or KTM 450s shouldn't need them.

    If you can wait a bit I'll post up specs. It would be a 7Ah which should be fine for your bike.

    Jim
    #31
  12. dentvet

    dentvet Long timer

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    couldn't access the website to see what they cost but

    would these be appropriate for running bike or helmet lights on a bike without a charging system?
    #32
  13. herrhelmet

    herrhelmet A Serious Man

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    I'm testing them on a pitbike without a charging system right now.

    I'm using the 10W LED spotlight which puts out a great beam... so far great success. Just using a Battery Tender Jr. I've had them on continuously for up to 3 hours without going dim.

    I'm going to test longer tonight. I think they would be great for night rides on mountain bikes or helmets.

    You just want to make sure you unplug the battery everytime your done with a ride and keep it charged. These don't like to be overdischarged.

    http://www.advrider.com/forums/showthread.php?t=607184

    I will post up this week when the site is fixed and all pricing will be available.
    #33
  14. Garthe

    Garthe ROCKS ARE YOUR FRIENDS...

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    Question...I'm looking for a very small battery for my XR 650 R. I have a rewound stator by Baja Designs and running Halogen lights, LED rear break lights. I really want the battery to help run the GPS. I want to install it under the seat.

    What is the smallest battery that you have? Will it work for my application?

    Thanks for your time. Jim
    #34
  15. herrhelmet

    herrhelmet A Serious Man

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    I have the 2.3 AH which are approx. 1" thick 4" long and 2.5" high and weigh around 11 oz. The least expensive (which I have sold to other guys running the Baja kits on their 650Rs) sell for $99, but I am going to give a 10% ADV discount on all batteries. Just haven't finished the website/shopping site yet.

    Here's what it looks like. Comes with 6" of 8AWG battery cable.

    [​IMG]


    If you want one, just PM me. So $89. Shipping is only $5

    Thanks,

    Jim
    #35
  16. Garthe

    Garthe ROCKS ARE YOUR FRIENDS...

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    Thank you for the info. Price is always important, but, what is the next step up in quality and size? Or does that make the battery size to large for under the seat. Also, how does it compare to this battery:

    http://www.trailtech.net/040-BATT3.7.html

    Cheers, Jim




    #36
  17. herrhelmet

    herrhelmet A Serious Man

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    The batteries I sell are considered "starting" batteries which have high CCA or cold cranking amps rather than a more deep cycle battery like the trailtech ones your looking at. Either works fine for running lights and accessories as long as the bikes charging system is running. If you don't need the starting power and want to save the $ the NiMH work o.k. I can't tell you how long the trailtech batts last, but the SYCL battery would be good for 5+ years. If you want to leave your GPS on for a long time with out the bike running the NiMH would be better.

    The next size up would be the 4.6 AH which is at the beginning of this post.

    size is the same but 2" instead of 1" thick.

    Jim
    #37
  18. Garthe

    Garthe ROCKS ARE YOUR FRIENDS...

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    Thank you for your honest answer.
    #38
  19. JDLuke

    JDLuke Ravening for delight

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    After a cold, cold morning that drained my AGM battery, I got to thinking about these again. What do you think of the idea of wiring in a harness to allow one of your batteries to be used as a booster? My thought is to keep it in the house, nice and warm, and then bring it out for an extra burst of power as needed. I'd also bring it along with me for longer rides just in case.
    #39
  20. herrhelmet

    herrhelmet A Serious Man

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    I do exactly that with my snowmobile in Utah. I have a quick disconnect and the battery is just velcroed in with a rubber strap. I keep in on the shelf and it takes 10 seconds to put it in.

    On my F650.... so far never run into a situation where it was below 40° but my next mod is to relocate the LifePO4 under the seat with a quick disconnect. So I can do the same.
    #40