Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Engel Smart Battery Box 2 - Batteries

  1. #1
    Join Date
    Jan 1970
    Location
    Australia
    Posts
    15,076

    Engel Smart Battery Box 2 - Batteries

    I have just been given an Engel Series 2 Smart Battery box and am not sure what type of battery to put into it.

    The inbuilt 6 amp Dc Dc charger can take these type of batteries up to about 140Ah:
    Standard lead acid
    Standard lead acid deep cycle
    AGM
    Gel
    Calcium
    Lithium

    Now it will be used to provide power around the campsite and not so much when the car and camper is being driven. In the car it will be plugged into a cigarette lighter 12v socket (mine have the power to manage it) so will be on charge and if I have the fridge in the back it will run off the battery box. Around camp it will charge direct from my solar panels.

    So I need a deep cycle battery so that crosses off the standard lead acid. Now while lithium is attractive as far as capability goes I dont feel the technology is quite there (failures of battery electronics) and of course price. So maybe in the future but not now.

    So that leaves Standard old style deep cycle, AGM, Gel and Calcium.

    Now I am not really across the differences so my question is - for a battery of about 120Ah what provides the best bang for the buck and allows you to go to the lowest SOC without causing issues with the battery.

    Oh - I have a 300/600w Pure Sine Wave inverter that works well and does not damage my electronics. The battery pack has an inbuilt 300w Modified Sine Wave inverter (why didn't they make it pure sine wave). What sort of electronics should I NOT use on a Modified Sine Wave inverter.

    Thanks

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

    [SIGPIC][/SIGPIC]

  2. #2
    Join Date
    Jan 2008
    Location
    Lysterfield, VIC
    Posts
    544
    Try lead crystal batteries. They are similar to lithium (in that you can discharge them to basically 0, and they charge quickly) without the lithium price.
    LEAD CRYSTAL BATTERIES | Powered by Betta Batteries
    [SIGPIC][/SIGPIC]
    Dave.
    Hi.
    96 Disco 1 V8.
    99 Disco 2 TD5.
    LROCV.

  3. #3
    Join Date
    Jan 1970
    Location
    Queensland
    Posts
    6,677
    Hi Garry and I'll cover your last comment first.


    These days, there is nothing to be gained in using a PURE sine wave inverter over a MODIFIED sine wave inverter.


    The only time a MODIFIED sine wave inverter caused problems was when powering older “transformer” type computers power supplies. These could get very hot when powered from anything but the BEST PURE sine wave inverters.


    Today, with the price of pure sine wave inverters around the same price as a good quality modified sine wave inverter, there are not to many NEW modified sine wave inverters available.


    As to battery type, before you try to work out which battery type is going to best serve your needs, you need to consider which battery is the LIGHTEST.


    I have had quite a few customers who have setups similar to what your are considering, and after just one or two trips, their "PORTABLE" battery box stays in the back of their vehicle at all times while they are away camping. And note, none of them has had a battery bigger than 100Ah and you are thinking about a 140Ah battery. Don’t think about the battery, think about what it is going to do to your back!


    Last but not least, that 6 amp DC/DC device is absolutely useless.


    If you get a 140Ah deep cycle battery of any type, and you discharge it down to it’s safe limit of 20% SoC, then you need to replace around 110Ah of used capacity and using that 6 amp DC/DC to recharge the battery back over 95%, you will need to drive for at least 20 hours straight.


    To add to this problem, you posted you will be running your fridge off the battery while recharging it. You will now need to drive for at least 30 hours straight.


    This is not realistic!


    Can I make a suggestion?


    You posted that you will charge the battery with solar while at a campsite.


    You want to power a fridge while at a campsite, but are you going to do some driving trips while your campsite is setup?


    If you are staying in the one place, then leave the battery box in the back of your Rangy and run an extension lead to your campsite.


    You can also use a “T” junction to allow you to use the solar at the same time.


    If you do go for trips, then you will need to look at different way that you might use this type of setup.

  4. #4
    Join Date
    Jan 1970
    Location
    Australia
    Posts
    15,076
    Quote Originally Posted by DI5CO View Post
    Try lead crystal batteries. They are similar to lithium (in that you can discharge them to basically 0, and they charge quickly) without the lithium price.
    LEAD CRYSTAL BATTERIES | Powered by Betta Batteries
    Thanks for that tip.

    What battery setting are they charged on.

    cheers
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

    [SIGPIC][/SIGPIC]

  5. #5
    Join Date
    Jan 1970
    Location
    Queensland
    Posts
    6,677
    Hi Garry and Di5co, you need a special charger for Lead Crystal batteries or they will have a very short lifespan.

    I would not recommend them for anything but a specially set up system.

  6. #6
    Join Date
    Jan 1970
    Location
    Australia
    Posts
    15,076
    Quote Originally Posted by drivesafe View Post
    Hi Garry and I'll cover your last comment first.

    As to battery type, before you try to work out which battery type is going to best serve your needs, you need to consider which battery is the LIGHTEST.

    Thanks for the the inverter information.

    I have one of my normal 100Ah lead acid batteries in the box at the moment and can lift it OK - would be nice to have a handle on top as well as the sides. 140Ah is the maximum it can take not necessarily what I will put in it.

    I was not going to buy one of these, it was a gift so is extra to my current setup which already has a starter/deep cycle in the camper which meets all the basic needs and will start the car if I had an issue with its starter battery. I am not worried about the time the battery pack might charge in the car - if for some reason the battery is real low I will plug the pack directly into my rear Andersen Plug so the inbuilt Dc Dc charger is bypassed so the Pack will get the full blast from the RRS alternator - these battery packs are very flexible in the options you have to charge its battery.

    So of the various deep cycle batteries, which do you consider will give me the best "bang" for expenditure.

    Cheers

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

    [SIGPIC][/SIGPIC]

  7. #7
    Join Date
    Jan 1970
    Location
    Queensland
    Posts
    6,677
    Hi Garry, good quality AGMs would be Fullriver and an Alrounder is probably the best economic type deep cycle.

  8. #8
    Join Date
    Jan 1970
    Location
    Australia
    Posts
    15,076
    Ok thanks - so AGM as against the other type of Deepcycle.

    I have heard good things on Fullriver and I have had a good run out of the Supercharge Allrounder. The combined starter/deepcycle Allrounder I have in my camper is now 10 years old and is charged on a smart charger every 4 weeks while the camper is in storage. It started off in my 24v 101 as the aux battery for 12v services and went to flat on a couple of occasions but always came good, then 4 years ago went into the camper. The starter battery in the RRS is also a Supercharge and has been running great.

    Thanks for the advice.

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

    [SIGPIC][/SIGPIC]

  9. #9
    Homestar's Avatar
    Homestar is offline Super Moderator & CA manager Gold Subscriber
    Join Date
    Aug 2010
    Location
    Sunbury, VIC
    Posts
    15,363

    Engel Smart Battery Box 2 - Batteries

    Fullriver batteries are great - I have 2 in my caravan and they've moved there from 3 other previous setups over the last 7 years and they are still going strong. I don't hurt them much though and rarely see them below 70% soc and they are connected to a 500 watt solar system 365 days a year running the 90 litre Engel in the van which never gets switched off or run on 240 as I've found no need for this. I have some neighbours that have gone through 2 sets of 'budget' agm's in 2 years. You do get what you pay for with batteries I've found.


    1977 101 FC - 'Chucky'
    1986 Classic RR - 'Thing'
    1976 Series III Tray
    1997 Honda CBR1000F
    2003 L322 - Gone to a new home.

    'Love with your heart - use your head for everything else.' - CaptainDisillusion

  10. #10
    Join Date
    Jan 1970
    Location
    Australia
    Posts
    15,076
    Thanks for that information - I agree FullRiver get a good rap
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

    [SIGPIC][/SIGPIC]

Page 1 of 2 12 LastLast

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!