GlennWest Posted December 30, 2017 Report Share Posted December 30, 2017 Got lots of time on my hands this time of year. Been researching these batteries. Seems most believe not having a battery management system is dangerous to battery life. Finding on eBay 2k battery packs 48v for $275. Would buy 8. That what he has left. Quite an investment and would hate to ruin them. What are people using. Or is there a 48v 220v inverter/charger that can be set up to bulk charge only within guidelines for volt battery? Hoping someone here knows this without me calling vendors. Not finding this info on line. Researching mostly now. Plans are for this spring. Also for your info on the 220/240v is upgrading mini split to 3 ton with 2 heads. May put my 1 ton unit on truck. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted December 30, 2017 Report Share Posted December 30, 2017 Best bet would be to do a web search for off grid living using those batteries. Nuke E might be able to help as well. Google- Chevy Volt Battery Off Grid Jim's Adventures Old Spacecraft.... Who knows whats next Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 He is out of my league. Lol. I can't make "simple programs" with computer systems. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted December 31, 2017 Report Share Posted December 31, 2017 I don't think there is a "Turn Key" Volt package anyone has put together. Everyone is doing parts and pieces, seeing what works and adapting when it doesn't. Jim's Adventures Old Spacecraft.... Who knows whats next Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 Just reading on a forum that Victron inverters are programmable for volt battery charging. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
sdixon747 Posted December 31, 2017 Report Share Posted December 31, 2017 I am using a Chevy Volt battery. I am using the whole pack rewired into 8 48 volt parallel batteries. That powers 3 parallel Magnum MS4448PAE inverters. Those are 120/240 volt dual phase inverters. The charge profile is set to CC/CV 30 amp/50 volt. I am not using a BMS or cell balancer and so far, no problems. Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 I was hoping you saw this. Thank you. Didn't know the Magnum was that programmable. As long as batteries aren't subject to freezing or extreme heat so no need for a management system for proper charging parameters set correctly. Right? 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
RandyA Posted December 31, 2017 Report Share Posted December 31, 2017 I have two 48 volt packs in my golf cart wired in parallel. I charge with the OEM 48 volt Club Car charger without the "computer" Club Cars have. I use a Variac (autotransformer) to adjust the AC voltage to the charger. I charge at 45 volts and stop charging at 50 volts. I keep current to 15 amps for the two batteries in parallel. Occasionally I measure each cell but do nothing to them individually. No issues and batteries are holding up fine. Randy, Nancy and Oscar "The Great White" - 2004 Volvo VNL670, D12, 10-speed, converted to single axle pulling a Keystone Cambridge 5th wheel, 40', 4 slides and about 19,000# with empty tanks. ARS - WB4BZX, Electrical Engineer, Master Electrician, D.Ed., Professor Emeritus - Happily Retired! Link to comment Share on other sites More sharing options...
sdixon747 Posted December 31, 2017 Report Share Posted December 31, 2017 6 minutes ago, GlennWest said: I was hoping you saw this. Thank you. Didn't know the Magnum was that programmable. As long as batteries aren't subject to freezing or extreme heat so no need for a management system for proper charging parameters set correctly. Right? As long as you use the Magnum ME-RTR Router Control you have significant control over charging. There are several preset charge profiles for wet cell, AGM, etc. But all you need is a simple CC/CV profile. Fully (and easily) programmable Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 Kk thanks. Going to visit the salvage yards and dealerships and try to find a deal on a battery. Of not, I will use eBay. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
sdixon747 Posted December 31, 2017 Report Share Posted December 31, 2017 This is the site I used to to find my battery. http://www.car-part.com/cgi-bin/search.cgi Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 Thanks. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
jcussen Posted December 31, 2017 Report Share Posted December 31, 2017 Check out this inverter/charger. Might call them and ask about charging lithiums. https://www.victronenergy.com/inverters-chargers/quattro Foretravel 40ft tag 500hp Cummins ISM 1455 watts on the roof, 600 a/h's lithium in the basement. Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 was using search on forum and finding nothing. Just not my day. Thinking my jacks are my largest DC user. Wondering how much of a stepdown dc to dc unit I will need. Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Jack Mayer Posted December 31, 2017 Report Share Posted December 31, 2017 You can use a separate 12-volt battery like Steve does for large house loads. The start on his diesel genset is likely the biggest demand...could be over 250 amps...I'm not sure on that without looking/measuring. I'm planning on three DC/DC 48/12 converters in parallel that will handle 180 amps at 12 volts. That will power my bigfoot levelers. But I may have to add a 12 volt battery for the genset....I have not worked that out just yet. The Victron stuff will handle the charging profiles required. As will the Magnum. Jack & Danielle Mayer #60376 Lifetime Member Living on the road since 2000PLEASE no PM's. Email me. jackdanmayer AT gmail 2016 DRV Houston 44' 5er (we still have it) 2022 New Horizons 43' 5er 2016 Itasca 27N 28' motorhome 2019 Volvo 860, D13 455/1850, 236" wb, I-Shift, battery-based APU No truck at the moment - we use one of our demo units 2016 smart Passion, piggyback on the truck -------------------------------------------------------------------------See our website for info on New Horizons 5th wheels, HDTs as tow vehicles, communications on the road, and use of solar powerwww.jackdanmayer.com Principal in RVH Lifestyles. RVH-Lifestyles.com Link to comment Share on other sites More sharing options...
GlennWest Posted December 31, 2017 Author Report Share Posted December 31, 2017 I have an unused converter mounted in my Teton. I could use it to charge a single battery to supply my 12V items. Had not thought of that. I was going to replace my faulty MSW inverter/charger anyway. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
sdixon747 Posted January 1, 2018 Report Share Posted January 1, 2018 Like Jack said, for my high load, short run, 12 volt loads like Gen Start, Big Foot, and Slides are all wired to the Gen Start battery. All other 12 volt loads I have 2 parallel 48/12 volt 25 amp Buck Converters. Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
GlennWest Posted January 1, 2018 Author Report Share Posted January 1, 2018 Thanks again. How are you charging the 12v battery? 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
sdixon747 Posted January 1, 2018 Report Share Posted January 1, 2018 16 minutes ago, GlennWest said: Thanks again. How are you charging the 12v battery? Standard RV converter. Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
GlennWest Posted January 1, 2018 Author Report Share Posted January 1, 2018 Ok. Thanks. Got that covered then. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Jack Mayer Posted January 1, 2018 Report Share Posted January 1, 2018 1 hour ago, sdixon747 said: Like Jack said, for my high load, short run, 12 volt loads like Gen Start, Big Foot, and Slides are all wired to the Gen Start battery. All other 12 volt loads I have 2 parallel 48/12 volt 25 amp Buck Converters. Steve, do you know what your slide motors are pulling?? Jack & Danielle Mayer #60376 Lifetime Member Living on the road since 2000PLEASE no PM's. Email me. jackdanmayer AT gmail 2016 DRV Houston 44' 5er (we still have it) 2022 New Horizons 43' 5er 2016 Itasca 27N 28' motorhome 2019 Volvo 860, D13 455/1850, 236" wb, I-Shift, battery-based APU No truck at the moment - we use one of our demo units 2016 smart Passion, piggyback on the truck -------------------------------------------------------------------------See our website for info on New Horizons 5th wheels, HDTs as tow vehicles, communications on the road, and use of solar powerwww.jackdanmayer.com Principal in RVH Lifestyles. RVH-Lifestyles.com Link to comment Share on other sites More sharing options...
GlennWest Posted January 1, 2018 Author Report Share Posted January 1, 2018 Basic question, do I need special DC to DC converters to parallel? Goggled and read about burning up, need diodes. I not educated in this area 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
sdixon747 Posted January 1, 2018 Report Share Posted January 1, 2018 16 minutes ago, Jack Mayer said: Steve, do you know what your slide motors are pulling?? The slide motors don’t pull a lot of power. Maybe 2 amps. The issue is, when they first start, I was told that the buck converters will see them as a dead short and shut down. Just trying to keep it simple, that is why all the high load short run items ore n the gen start battery. Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
GlennWest Posted January 1, 2018 Author Report Share Posted January 1, 2018 Interesting. I have the DeWalt hydraulic slide. Wonder if same happen with it 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
sdixon747 Posted January 1, 2018 Report Share Posted January 1, 2018 3 minutes ago, GlennWest said: Interesting. I have the DeWalt hydraulic slide. Wonder if same happen with it My guess is that it would be the same. I’m guessing your hydrolic system hah a fairly large motor to run the hydraulic pump. Buck converters are great fot lights and electronics, but not so much for big motors. Steve & Gail 2000 Volvo VNL660 Autoshift Detroit 60 12.7 "Semi Crazy" 2016 smart "Lil Crazy" 2018 Space Craft 48' TT "The Nut House" KJ4YGY & KK4CTE Link to comment Share on other sites More sharing options...
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