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    Lithium battery questions

    Hey y'all I've been searching around and I'm either terrible at searching or the answers don't exist (my money is on my bad searching abilities though)

    So I picked up a lithium battery (12v featherweight Lithium battery) and I know I need to replace my regulator but I can't seem to nail down exactly which one I need and if there's anything else I need to change on my 1982 gs450t's electrical on top of that. I know it's not plug and play I got it mainly so I can learn how to do it and what is needed so I can have another skill up my sleeve.

    Any help is appreciated and I thank yall in advance.

    #2
    Can't help with the R/R selection, but I have to ask ... what was the incentive for the lithium battery?

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      #3
      The Shindengen series regulator will work fine with a lithium as far as I know. You can fit any of the Mosfet series (I have an FH020 that's brand new somewhere if you're interested) but the the series ones are kinder to your bikes stator. Lots of info on that here if you search.
      1980 GS1000G - Sold
      1978 GS1000E - Finished!
      1980 GS550E - Fixed & given to a friend
      1983 GS750ES Special - Sold
      2009 KLR 650 - Sold - gone to TX!
      1982 GS1100G - Rebuilt and finished. - Sold
      2009 TE610 - Dual Sporting around dreaming of Dakar.....

      www.parasiticsanalytics.com

      TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

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        #4
        Ricks Motorsports has R/R’s for a lithium battery

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          #5
          Lithium Battery and R/R

          Ricks Motor Sports have R/R’s for Lithium Batteries

          Comment


            #6
            Rick's are shunt type... I would get a series (or even a shunt) type Shindengen before I went with the Rick's one.
            1980 GS1000G - Sold
            1978 GS1000E - Finished!
            1980 GS550E - Fixed & given to a friend
            1983 GS750ES Special - Sold
            2009 KLR 650 - Sold - gone to TX!
            1982 GS1100G - Rebuilt and finished. - Sold
            2009 TE610 - Dual Sporting around dreaming of Dakar.....

            www.parasiticsanalytics.com

            TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

            Comment


              #7
              What you need with a lithium battery is a R/R that is very accurate and consistent with its charge rate, especially the high rpm charge. Look at the specs for the battery you want to buy. I used an Antigravity lithium in my gs750, if memory serves 14.2v at high rpm is the max acceptable charge rate. The shindengen series regulators are perfect for this (also what I used). The lithium batteries are very nice for saving weight or using a smaller form factor if your doing something custom and need to fit a battery in a smaller spot.
              1978 GS750E (barn find and current project)
              1997 Electra Glide
              1983 Goldwing

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                #8
                Hi, like jhurt said and from what I have read, lithium batteries require a minimum voltage of 13.9 to have a proper life. Therefore I think you need a regulator that gives at least 13.9 volts at idle . The sh870 on my 1100e gives 14.4 volts no mater the rpm. My honda crf250rx came stock with a lithium battery, I will report back about its charging rate.
                Last edited by chris; 08-28-2021, 07:38 PM.
                1983 gs1100ed restro-mod. 1998 gsxr 1100 almost mint, 2019 kawasaki klx250, 2011 Beta 250 evo trials bike, 2017 Montesa 300rr trials bike, 2021 honda crf250rx woods weapon

                Comment


                  #9
                  I have a LI-ION battery and a SH775 conversion on my GS1000.

                  This is the link to the battery I purchased https://www.ebay.co.uk/itm/292846700...gAAOSw7thcB7Nk

                  Have a look at the specs more for the diamentions and CCA than the cost or location of seller.

                  The main reason for my going to Li-ion was the CCA, I have sheared the 3 bolts on the starter clutch twice now due to fireing back on start-up, I have done the kill switch conversion but the speed the Li-ion battery spins the motor is so much quicker and makes such a difference.

                  That's my 50 cents worth if it helps.
                  Jeff

                  Living the dream...

                  1980 GS1000 that has been modestly modified.

                  Comment


                    #10
                    I had to google for the battery, this looks like the one: https://www.motorcycleid.com/fire-po...m-battery.html

                    These are marketed as replacements for 12V powersports batteries so assuming these are engineered and manufactured worth a damn, you should not need to modify your charging system in any way because they should have battery management circuitry built into them. So contrary to what you read about Lithium batteries being finicky about voltage thresholds and whatnot, that probably doesn't apply here. (But you should still get a Shindingen series R/R anyway.)

                    One downside to this battery is that it uses Lithium Polymer chemistry. This makes for cheap and powerful batteries, but they also have a tendency (more than most, anyway) to go up in flames due to neglect or the occasional manufacturing defect. A little rare, but it does happen. I will switch away from AGM ("better" lead-acid) batteries forever once Lithium Iron Phosphate (LiFePo4) powersports batteries come down in price just a little bit more. They have a much more stable chemistry, which I feel is a substantial benefit to something that sits directly under my crotch.
                    Charles
                    --
                    1979 Suzuki GS850G

                    Read BassCliff's GSR Greeting and Mega-Welcome!

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