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Will the alternator charge my second battery with a dual battery set-up???

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  • #16
    Originally posted by Warnsie View Post
    Is it true that the Redarc Smart Start BCDC will put out a higher charge then the alternator will? Mr TJM seems to believe this is the case.
    The Redarc can output more voltage than most Alternators but
    a Alternator can restore the bulk charge to a battery much faster
    than a DCDC charger can.

    For the bulk charge stage of charging the DCDC charger output is a lot lower
    than a alternator can output on its own.

    Cheers
    LeighW
    HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

    Comment


    • #17
      Guys....

      I've got one of those Diode/Fuses installed in mine as well and it charges at about 14.2volts. I'm still having issues with the 2nd battery not fully charging (I know that u won't 100% charge from car) and to a point that if the car stands still for a day or 2 the volts drop to about 12volts or just above 12volts. Checked the current flow and it's about .005amp draw when it's parked in the garage. I spoke to the person where I purchased the battery from and he indicated that most NEW batteries these days are the "Calcium" type batteries which requires a higher charging voltage of at least 14.7volts charging voltage. Doing a little research on the net, I've comfirmed that even a lot of Battery Charger Manufacturers also state that a higher charging voltage is req'd for these type of batteries.... one even indicated 15v.

      Question..... What can be done to increase the charging voltage again from 14.2 to say 14.7v? What about 2 Diodes in series??

      The battery is a Supercharge Overlander battery & would only be 12mths old max.....

      rob
      [I]cheers..... Rob (macca)[/I]
      [I][B][COLOR=DarkRed]Car-4: 1996 Defender Tdi [/COLOR][/B][/I]
      [I][B][COLOR=Blue]Car-3: 1996 Discovery Tdi Auto[/COLOR][/B][/I]
      [B][I][COLOR=Green]Car-2: 1993 Suzuki Vitara 4Dr (modified for Playing) [/COLOR][COLOR=#ff0000]Now Retired[/COLOR][COLOR=Green] [/COLOR][/I][/B]
      [B][I][COLOR=DarkOrchid]Car-1: 2010 Toyota Prado 150's (Missus Car/current touring vehicle)[/COLOR][/I][/B]

      Comment


      • #18
        I swapped my SuperCharge Allrounder for a SuperCharge AmpTech deep cycle and haven't looked back.
        [url=http://www.myswag.org/index.php?topic=12264]My Prado[/url]

        Comment


        • #19
          The supercharge batteries seem to cause more problems at times than they cure.

          A charge voltage of 14.2V will eventually charge the battery it will just take more time.

          If your charging the battery daily and not using it and it is self discharging after two days
          I would say you have a problem with the battery and would be getting it tested.

          Question two, you could use two diodes to up the voltage but then the voltage is getting
          rather high and could exceed the car manufactures specification. Also the cranking battery
          headlight globes etc wouldn't be to happy either.


          Cheers
          LeighW
          LeighW
          Avid PP Poster!
          Last edited by LeighW; 17-01-2012, 05:25 PM.
          HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

          Comment


          • #20
            The Allrounders don't work well in the D4Ds due to theit Calcium construction, they're a hard battery to charge. The AmpTechs are not Calcium hence they work well.
            [url=http://www.myswag.org/index.php?topic=12264]My Prado[/url]

            Comment


            • #21
              Cheers for that.... I'm starting to see a pattern of these Allrounder Batteries from searching on the web.... I was told that most Automotive batteries are now of Calcuim based construction now... is that be correct?


              Originally posted by LeighW View Post
              The supercharge batteries seem to cause more problems at times than they cure.

              A charge voltage of 14.2V will eventually charge the battery it will just take more time.

              If your charging the battery daily and not using it and it is self discharging after two days
              I would say you have a problem with the battery and would be getting it tested.

              Question two, you could use two diodes to up the voltage but then the voltage is getting
              rather high and could exceed the car manufactures specification. Also the cranking battery
              headlight globes etc wouldn't be to happy either.


              Cheers
              LeighW
              [I]cheers..... Rob (macca)[/I]
              [I][B][COLOR=DarkRed]Car-4: 1996 Defender Tdi [/COLOR][/B][/I]
              [I][B][COLOR=Blue]Car-3: 1996 Discovery Tdi Auto[/COLOR][/B][/I]
              [B][I][COLOR=Green]Car-2: 1993 Suzuki Vitara 4Dr (modified for Playing) [/COLOR][COLOR=#ff0000]Now Retired[/COLOR][COLOR=Green] [/COLOR][/I][/B]
              [B][I][COLOR=DarkOrchid]Car-1: 2010 Toyota Prado 150's (Missus Car/current touring vehicle)[/COLOR][/I][/B]

              Comment


              • #22
                Originally posted by D4D View Post
                The Allrounders don't work well in the D4Ds due to theit Calcium construction, they're a hard battery to charge. The AmpTechs are not Calcium hence they work well.
                Its not just a D4D problem with these batteries. A mate of mine had 2 of these in his 1kz and they only lasted about 18 months, seems like every second battery problem you hear about involves a supercharge allrounder!

                Cheers Andrew
                [COLOR="#FF0000"]So Long and Thanks for all the Fish![/COLOR]

                [url=http://www.4wdadventurers.com/showthread.php?3840-AJ-s-120-Prado]MY PRADO AND DIY CAMPER TRAILER[/url]

                [url=http://www.4wdadventurers.com/showthread.php?3975-AJ-s-79-series-Cruiser-Ute]MY HZJ79 Landcrusier[/url]


                [SIGPIC][/SIGPIC]

                Comment


                • #23
                  Interesting, when I swapped mine out SuperCharge told me they need a good 15V charge to keep the fully charged. I don't know an alternator that goes that high.
                  [url=http://www.myswag.org/index.php?topic=12264]My Prado[/url]

                  Comment


                  • #24
                    Originally posted by rob_macca67 View Post
                    Cheers for that.... I'm starting to see a pattern of these Allrounder Batteries from searching on the web.... I was told that most Automotive batteries are now of Calcuim based construction now... is that be correct?
                    Most if not all have some calcium as it lowers gassing and therefore maintenance, also strengthens the plates.

                    Some have a lot more than others though.

                    Cheers
                    LeighW
                    HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

                    Comment


                    • #25
                      Most cranking batteries are now Calcium/Calcium ( Ca/Ca ) type and when used as cranking batteries ONLY, they have a very long life expectancy, even though they will never be fully charged at any time.

                      BUT, when used as a cranking battery they are not needed to be fully charged to be able to do what they were designed to do, and that’s to start a motor.

                      If used as an accessories power supply battery, whether they be a cranking or deep cycle type battery, then about once every MONTH or so, they need a Boost or Equalising charge of at least 15v, other wise they will progressively loose charge capacity.

                      You DO NOT need to charge them at high voltages every time you recharge them and doing so will probably damage them.

                      If you read the info on the Supercharge battery site, it gives you all you need know to keep these batteries in good nick.

                      A charge voltage of around the 14v mark is perfect for any battery and usually the biggest cause of premature battery demise is insufficient charging TIME, not low voltage.

                      If you don’t drive, on average, for at least 15 to 20 minutes every time you start your motor, NO MATTER WHAT TYPE OF CRANKING BATTERY YOU HAVE, you will shorten it’s life span.

                      I call this short driving Shopping Trolley Syndrome and if your vehicle is used this way, again, no matter what type of battery it is, you need to supplement the short alternator charging TIME with a regular charge with a good quality battery charger and preferably a small current charger.

                      People regularly blame the battery itself when the problem is driving habits the owner that is actual cause the problem.

                      when maintained properly, Ca/Ca batteries have many advantages over other batteries and you are going to see a lot more of them being used.

                      BTW, even old type flooded wet cell batteries require a boost cycle once every so often to keep them in good nick and this has been a requirement of these types of batteries for many decades but has been over looked in present times.

                      Word of warning, do NOT Boost or Equalise charge Standby type AGMs or gel cell batteries, you will destroy them.

                      Comment


                      • #26
                        That's good to know... Will plan to do a "top up" charge once a month then
                        [I]cheers..... Rob (macca)[/I]
                        [I][B][COLOR=DarkRed]Car-4: 1996 Defender Tdi [/COLOR][/B][/I]
                        [I][B][COLOR=Blue]Car-3: 1996 Discovery Tdi Auto[/COLOR][/B][/I]
                        [B][I][COLOR=Green]Car-2: 1993 Suzuki Vitara 4Dr (modified for Playing) [/COLOR][COLOR=#ff0000]Now Retired[/COLOR][COLOR=Green] [/COLOR][/I][/B]
                        [B][I][COLOR=DarkOrchid]Car-1: 2010 Toyota Prado 150's (Missus Car/current touring vehicle)[/COLOR][/I][/B]

                        Comment


                        • #27
                          Guys, I too have seen the light in my 120 dual battery setup and purchase the diode / fusey thing and checked the charge rate before installation at 13.5 then after install at 14.1 so hopefully my second battery " the dreaded all rounder" will maintain charge.

                          Cheers

                          Wazza " Frederick"

                          Comment


                          • #28
                            Originally posted by LeighW View Post
                            Hi Nifty,

                            Good to see you've made your own but keep in mind you have now removed
                            the protection that the fuse provided. If a fault should develop in the vehicles
                            wiring or alternator you could end up with a wiring or fuse box fire and lose of
                            your vehicle.

                            I strong recommend that you incorporate a fuse into your design.

                            Cheers
                            LeighW
                            Leigh,

                            You are correct but have a closer look and you will see that the diode is in series with the fuse so I still have a fuse for protection. In any event the diode will open circuit if the current is excessive.

                            Nifty

                            Comment


                            • #29
                              Sorry missed that you have retained the fuse.

                              As for the diode going open, highly unlikely, will in 99.5% of cases go short and unless you can get enough current flowing to fuse the leads you have a problem. Hence retaining fuse is a very good idea.
                              LeighW
                              Avid PP Poster!
                              Last edited by LeighW; 27-01-2012, 09:19 PM.
                              HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

                              Comment


                              • #30
                                Gday, I also have one of these diodes & they definitely work. Have had it over a year now..
                                2010 Prado GXL D4D Auto , BFG A/T , DVD Console , Tekonsha P3 , Projecta Dual battery system , Piranha dual battery tray..
                                Jayco outback expanda

                                Comment

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