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  • Lithium battery and new regulator/rectifier

    Revival cycles says if I run a lithium battery I need a new regulator/rectifier? they sell several and I am wondering which one to get? 1981 xs1100 special
    81 XS11

  • #2
    Try asking geezer. His site: http://www.oregonmotorcycleparts.com/ . He will answer questions, and may have a reg/rec that probably works better and cost less than what you are looking at.
    Ray Matteis
    KE6NHG
    XS1100 E '78 (winter project)
    XS1100 SF Bob Jones worked on it!

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    • #3
      My advice, save your money and run an AGM battery unless you are building a cafe and need the tiny one.
      1979 XS1100 Special
      1980 XS1100 Std parts bucket
      1987 ZL1000 Eliminator
      1976 XS750D Project in waiting

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      • #4
        Originally posted by leggman1 View Post
        Revival cycles says if I run a lithium battery I need a new regulator/rectifier? they sell several and I am wondering which one to get? 1981 xs1100 special
        Which way to go kind of depends on what you are trying to do.

        I've got three 78' E's and 3 Shorai batteries. Two with Geezer regulators, one with original Reg / Rec.

        For sure easiest is what 2Wheels stated, get an AGM. Those would be the same size as the original battery you are replacing. That means the ++ and -- battery cables will fit with no modification. And you can keep the original Reg / Rec.

        If you want to save some weight and likely make a couple modifications (and play around a bit with it all) the lithium battery is ok too. A couple caveats with the lithium is the Spike charging voltage. Spike over 15v is apparently a battery killer. Same with idle rpm voltage, if below 13v than that's apparently a battery killer. So if going with lithium be sure to measure the size of the battery. The lithium replacement is likely MUCH smaller. Because it is smaller the battery cables are likely too short. Then you get into the bikes charging voltage issues with the original Reg / Rec. The new Reg / Rec isn't plug & play either so it might need a little modification to fit the way you want it to fit. So as Ray advised, contact Geezer as he is the expert.

        I do like my Shorai's and they saved a little weight. I got the peak output 14.2v Reg / Rec vs. Geezers 14.6v output.

        Good Luck,
        Jeff
        78' XS1100 E
        78' XS1100 E
        78' XS1100 E

        '73 Norton 850 Commando
        '99 Triumph Sprint ST
        '02 G-Wing GL1800

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        • #5
          The lead acid battery has been the staple of proven automotive/motorcycle technology as the base of the electrical system for a long time..... Improvements made, maintenance free, sealed lead acid battery, absorbed glass mat really still all work the same and are fitting for the application. Lithium ion battery, it's new to automotive and limited in use by major manufactures, avation had a nice disastrous start (Fires on several Boeing 787s) that grounded the fleet and halted production. Electric scooters still catching fire..... Not something to be sitting on while cruising down the road. Li is far too reactive and sensitive to over/under charging.......

          AGM is the way to go IMO.

          Bax
          80 SG

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          • #6
            I understand all the comments against the Li battery but this is a custom build and the customer wants a small battery. The bike is getting a complete rewire with a m unit. I was just hoping to see what reg rec I had in case I needed to order a new one that is more Li friendly
            81 XS11

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            • #7
              Originally posted by leggman1 View Post
              I understand all the comments against the Li battery but this is a custom build and the customer wants a small battery. The bike is getting a complete rewire with a m unit. I was just hoping to see what reg rec I had in case I needed to order a new one that is more Li friendly
              I would be very interested in your Motogadget installation. I know it's time consuming, but I for one would enjoy following a thread on that. I'd be interested in your entire build. I have two junk Specials and I have something custom in mind.

              Marty (in Mississippi)
              XS1100SG
              XS650SK

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              • #8
                A Lithium battery is not worth the money. If you have any electrical charging issue it will fry it. I know because I killed one in three months. better off with a gel filled battery at least you can lay on side to get more room.

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                • #9
                  leggman1 said:
                  I understand all the comments against the Li battery but this is a custom build and the customer wants a small battery. The bike is getting a complete rewire with a m unit. I was just hoping to see what reg rec I had in case I needed to order a new one that is more Li friendly
                  As I said, try Tony at Oregon first, and then spend the money if needed for the correct reg/rec. Customer is buying it, so he will need to pay for what he wants.
                  Ray Matteis
                  KE6NHG
                  XS1100 E '78 (winter project)
                  XS1100 SF Bob Jones worked on it!

                  Comment


                  • #10
                    Leggman, you do not need to change the regulator because you are using a Li-battery. Gord, The GEL battery is poorly suited for cold weather. I would use AGM
                    Resigned

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                    • #11
                      I don't run lithium ion, but the special regulators are available from Rick's or Oregon Motorcycle Parts. I don't think I'd hesitate to take the advice of Revival Cycles either. I'm sorry I can't advise whether or not you can't use a stock regulator, but I will offer up that the stock unit is about 40 years old.
                      Last edited by jetmechmarty; 09-20-2020, 08:25 AM.
                      Marty (in Mississippi)
                      XS1100SG
                      XS650SK

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                      • #12
                        I no longer make a special reg/rec unit for use with lithium batteries. A couple of the components I need to make them have become hard to get and not worth the trouble any more since lithium batteries have gotten better. Shorai is the only brand of lithium battery I can somewhat recommend. To be honest I won't recommend lithium batteries until Ford starts putting them under the hood of F150's... Anyway the only good use I can see for them is on a race bike that has a total loss electrical system.

                        Tony
                        Hi my name is Tony and I'm a bikeoholic.

                        The old gray biker ain't what he used to be.

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