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The 150 series Dual Battery Guide

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  • Thanks, I had problems with the underbonnet AGM in the 120 degrading with the heat so I went away from that this time. The Prado is very nearly getting there...

    As I said tge lead crystal batteries seem a good thing. Much better than the AGM before it/them.
    My 150 build - http://www.pradopoint.com/showthread.php?27423-A-Random-approach-to-a-Bluestorm-150-GXL-D4D-automatic

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    • Having some issues fitting the piranha BTP150D battery tray to my 150 d4d. Anybody have any pics or tips to install, seems to be the wong size

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      • Originally posted by dBC View Post
        That South African thread appears to be blaming the lead crystal bulging on a combination of high engine bay temperatures and the very high charging currents you get from Alternator+VSR solutions.
        To charge Lead Crystal batteries properly, you get better results by charging with high currents and the manufacturer specifically states for best results, charge with 30 amps per 100Ah of Lead Crystal battery capacity.

        Unless charged with sufficient charge currents, Lead Crystal batteries progressively loose capacity.

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        • Originally posted by mjrandom View Post
          Mine is in the back. BCDC25 in the battery box. My signature has a link to my build. Pics in there if you are interested. My compressor is in the spot under tge bonnet.
          Hi mjrandom, what voltage setting have you got you DC/DC set at.

          I have found that if the charge current is not high enough, you need to raise the charge voltage.

          This means Lead Crystal batteries are better charged with a small DC/DC device set to around 15v will fully charge Lead Crystal batteries, whereas, set at 14.4v will not fully charge them.

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          • Originally posted by epayne1 View Post
            Having some issues fitting the piranha BTP150D battery tray to my 150 d4d. Anybody have any pics or tips to install, seems to be the wong size
            Which engine do you have. The tray for the 2.8 is quite different to the 3.0 and pretty fiddly to get in.
            2018 GXL D4D auto, ARB bar, dual batteries, BFG A/T's, Dobinson/Bilstein suspension

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            • Great info guys,

              I've been reading up on the Lead Crystal batteries and getting a little excited about their fast recharge times and greater discharge capabilities. I plan to install one in the back of my drawers to power 2 fridges and some accessories.

              There are 2 types of lead crystal batteries with slightly different charge rates - for the CNFJ it's 30a/100 and for the EVFJ it's 20a/100.
              As the fridges are 'motors' and the plates of the EVFJ's are thicker, Jason from Betta Batteries recommended i use the EVFJ battery which would also be more resilient for 4x4 use.

              To charge the 6-EVFJ-120, i need a minimum of a 28A charger - which leads me to either the Redarc BCDC1240 or the Enerdrive 40A DC2DC+

              My query is that in the 1GD, do i have a spare 40 to 50 amps from the alternator to charge the battery and get the quickest recharge?

              Originally posted by drivesafe View Post

              To charge Lead Crystal batteries properly, you get better results by charging with high currents and the manufacturer specifically states for best results, charge with 30 amps per 100Ah of Lead Crystal battery capacity.

              Unless charged with sufficient charge currents, Lead Crystal batteries progressively loose capacity.
              6-EVFJ-120 datasheet

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              • just had a dual battery system installed and my main battery just died (7yrs old original battery so cant complain) but acid leaked and stripped the paint ..... not happy but i sorted it yesterday still waiting for paint to dry will get new battery in today... my question is it common for a new system to drain a weak starter battery cause the same thing happened to a mate of mine as well the other week.

                cheers

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                • Shouldn't affect the main, sounds like the main dropped a cell. I would have thought there would have been signs the main was on the ay out,
                  slow cranking etc if that was the case then really no one to blame but yourself. Personally I test the main at least twice a year
                  but then we do a lot of remote travel. Your service mob should have also been checking it if they haven't been that is.
                  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

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                  • Originally posted by LeighW View Post
                    Shouldn't affect the main, sounds like the main dropped a cell. I would have thought there would have been signs the main was on the ay out,
                    slow cranking etc if that was the case then really no one to blame but yourself. Personally I test the main at least twice a year
                    but then we do a lot of remote travel. Your service mob should have also been checking it if they haven't been that is.
                    thanks for the reply,

                    not looking at blaming anyone at all. Just seemed odd my mate and myself main batteries died thought it maybe a common thing. wanted to know cause my brother is getting dual batteries soon and was getting at should he just replace the main battery so he wont get stuck any where if the main battery dies.

                    cheers

                    Comment


                    • Hi Everyone,

                      Such an informative conversation. I have gone in circles over the last week reading this post so I though it best to seek some further advice. I have a few questions about my desired outcome for my MY18 GXL.

                      1. I have a Thunder Weekender Batery box with a 120 AGM
                      2. I have an ARB 60L fridge
                      3. When out camping I like to charge camera batteries, laptops, iphones, ryobi rechargable batterys (lighting)

                      The Plan

                      Phase 1 - Ideally I want a cheap/reasonable way to run a line from the alternator to keep the Batterybox charged when on the road - I am heading to NSW from Alice Springs via Lake Eyre in early May 2019.

                      Phase 2 - I want to install a second battery under the hood (dual battery system) and run that up to various plugs and an inverter into the drawrs into the back of the Prado, also powering the fridge during travel. It would be great if this phase could allow for continued charging of the battery box.

                      Phase 3 - Install and run (a) electric brakes (b) caravan power to ther towball (enough power to keep a caravan fridge running)


                      My questions:

                      1. If I am running cable to the back of the Prado in phase 1, should I run the cable for all phases?
                      2. Can I buy a DIY kit suitable for any of these phases?
                      3. Phase 2 - Would a BCDC support charging the battery box and power the fridge at the same time? If so please recommend the brand and configuration.
                      4. Phase 3 - Would the same BCDC handle the requirements of all 3 phases?
                      5. What would/should the components cost for each of these Phases cost?
                      6. What are the easiest parts of this plan and which bits are best left for the proffessionals?

                      Thank you all!

                      Miko

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