 | Home > Maintenance & Modifications > Dual Battery & Split Charge. |
 
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| Michaelkan Member Since: 19 Dec 2018 Location: Bath Posts: 149   
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Today I received 2x Odyssey PC1500DT and Gwyn Lewis stainless steel battery tray. Next I would need a split charge system. Is below split charge overkill? Basically I need two battery system, one to start the car. The second battery to run lights, inverter 2000w to charge my bikes, camera and drones and future camping equipment. Also will be adding 150w solar panel onto the roof rack.
Any advice or ideas. Thanks. https://rover.ebay.com/rover/0/0/0?mpre=ht...2149130179 |
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24th Jan 2019 8:29pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7682 
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yep sure is.
try something similar to: https://www.ebay.co.uk/p/Durite-0-727-33-1...amp;chn=ps you can get kits with them too. i havent looked for the right spec on just googled it and pasted first link for Durite VSR (voltage sensing relay) Cheers James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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24th Jan 2019 8:35pm |
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| Badger110 Member Since: 06 Feb 2018 Location: South hams Posts: 1025 
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A decent VSR will suffice until you get the solar panel set up.
https://rover.ebay.com/rover/0/0/0?mpre=ht...3182880895 This isolates the main battery from the aux system so you never run it flat and allows the current from the alternator to charge the aux battery when the engine is running ( or hits a pre determined Voltage input, usually around 13.4v ) Simple and effective |
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24th Jan 2019 8:44pm |
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| jocklandjohn Member Since: 16 Sep 2016 Location: Highlands Posts: 62  
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These are good. I fitted one.
https://www.jgs4x4.co.uk/split-charge-ibs-...otorhomes/ |
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28th Jan 2019 12:15pm |
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| jocklandjohn Member Since: 16 Sep 2016 Location: Highlands Posts: 62
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Here's the system and a link to the manufacturer (Britpart branded stuff is made by IBS in Switzerland). http://ibs-tech.ch/en/products/dual-battery-system.html |
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28th Jan 2019 12:18pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971 
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If I was doing my electrical system again I wouldn't bother with a split charge setup.
Pair of batteries with a Victron BMS to monitor them and you've got both more starting power and more camping energy whilst having an overall simpler system. However, if you do want a split charge system then the Victron Cyrix series are good and not horribly expensive. I usethe 230A one and it's got built in jump starting if you need it. |
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28th Jan 2019 2:58pm |
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| JOE_130 Member Since: 26 Nov 2014 Location: Chelmsford Posts: 104 
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+1 for the Victron Cyrix. I use one of these on any system I spec.
https://www.es-store.co.uk/product_details...ow_menu=10 Not too expensive but still a brand I trust. It switches if either the cranking battery or the auxilliary bank reach a set voltage so, for instance, if your solar panel manages to pick your auxilliary battery/s up sufficiently it will switch in and start charging the cranking battery too. It's also got an over-ride and a current rating capable of providing cranking power from the auxilliary bank if your cranking battery ever fails. Arguably you should be using a DCDC to charge an AGM auxiliary battery like an Odyssey as they can take higher charge voltages. I know Redarc now sell their DCDCs/charge controllers in the UK but I'm not sure what their prices are like. |
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28th Jan 2019 4:19pm |
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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1758 
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You do have the potential to run both batteries flat though, which is one of the biggest protections offered by even a simple split charge. Personally I'd choose a smaller cranking battery and a large leisure battery with a split charge |
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28th Jan 2019 7:19pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971
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There is absolutely no argument for wasting money on a DC/DC charger for a simple application like the Defender with a dumb alternator and the aux battery next door to the main one. It will cost more and slow down the charge rate. If you have a battery in theback at the end of a cable that isn't big enough, then they make sense - however it's still cheaper to just upgrade the wiring to something better. No affordable DC/DC chargers on the market can do anything like this amount of current: Click image to enlarge That was at the same time as powering my fridge (another 6A or so). Towards the tail end of the charge, the DC/DC charger will have a slight advantage, but the bulk charge is so vastly quicker without that any minor boost there is far outweighed by the rest of the charge cycle. Bear in mind that the charging system is not just charging the battery, it's also powering anything else you've got connected to the auxilliary system like a fridge which will reduce any current available for charging the battery. I run my compressor from the aux battery too, though usually with the engine running. That isn't really doable nicely with a DC/DC system. |
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29th Jan 2019 12:44pm |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 3996 
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I’ve been weighing up fitting a split charge too. One of the biggest downsides of the DC/DC chargers apart from cost is there size and need for cool air. They are huge. If you are trying to do a neat install in the Defender seat box I don’t think there is room, and probably not enough airflow to keep it cool. 2007 110 TDCi Station Wagon XS
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29th Jan 2019 9:00pm |
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| yobbie Member Since: 15 Nov 2010 Location: Isle of Wight Posts: 711 
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Try the Intervolt DCC Pro, I’ve managed to fit this in the seat box with twin batteries
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15th Jun 2019 10:12pm |
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| UtilityTruck Member Since: 09 Jan 2014 Location: Oxford Posts: 463
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Watching this topic as I’d like to fit a dual battery + solar system. Not seen the Victron stuff before, looks good. 2014 Keswick Utility 2.2
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16th Jun 2019 4:57pm |
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