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Tobias Duncan Samba Member
Joined: January 15, 2013 Posts: 1388 Location: Taos NM
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Posted: Wed Jan 23, 2019 7:17 pm Post subject: Re: Lithium Aux Battery |
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I thought you had to go to AGM batteries to get 50% and that normal lead acid deep cycle batteries were 25%. |
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vwhammer Samba Member
Joined: May 20, 2006 Posts: 998 Location: Boulder CO.
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Posted: Wed Jan 23, 2019 7:57 pm Post subject: Re: Lithium Aux Battery |
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Sorry.
Yes I see I failed to mention that the deep cycle batteries are AGM batteries.
You are correct. |
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ThankYouJerry Samba Member
Joined: September 01, 2012 Posts: 2271 Location: Shakedown Street
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Posted: Thu Mar 07, 2019 7:35 pm Post subject: Re: Lithium Aux Battery |
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2 Battle Born 100Ah auxiliary batteries in parallel. Takes up a little less than 1/2 the space under my Weekender’s bench seat. _________________ 1990 Multivan - "Ohana"
1.8T, Auto w/3.27 R&P + Peloquin TBD
Last edited by ThankYouJerry on Thu Mar 07, 2019 9:13 pm; edited 2 times in total |
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shagginwagon83 Samba Member
Joined: February 07, 2016 Posts: 3787 Location: VA/TN
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Posted: Thu Mar 07, 2019 7:38 pm Post subject: Re: Lithium Aux Battery |
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nice job! _________________ Brandon
"Jo Ann" - '83.5 Westfalia EJ22e w/Peloquin
Instagram @joannthevan |
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shagginwagon83 Samba Member
Joined: February 07, 2016 Posts: 3787 Location: VA/TN
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Posted: Thu Mar 07, 2019 7:45 pm Post subject: Re: Lithium Aux Battery |
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You peaked my interested. Really just to see how pricing is holding up. I watched the Battle Born video below and learned that a higher charging rate shortens the life of the battery. I don't know if that would stop be from charging by alternator - but would be interesting if you could somehow control the charging rate. I feel like you either want it charged as fast as possible - or as slow as possible (1+ hour drives, etc)
Link
_________________ Brandon
"Jo Ann" - '83.5 Westfalia EJ22e w/Peloquin
Instagram @joannthevan |
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ThankYouJerry Samba Member
Joined: September 01, 2012 Posts: 2271 Location: Shakedown Street
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Posted: Thu Mar 07, 2019 8:12 pm Post subject: Re: Lithium Aux Battery |
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Here are some notes I took during a phone conversation with Battle Born:
Battle Born - LiOn Battery 100Ah (29lbs 3yr warranty)
Charging requirements:
Bulk/absorption 14.2-14.6
Specific = 14.4
Float = 13.6 or less
No equalization charge!
30A charger from progressive dynamics
8.6”x7.25”x4.5” $201 p/n pd9130lv
Victron Blue Smart IP65 charger about $170 15A
Victron BMV-712 Smart battery monitor about $200
Sterling battery to battery charger 30A $293 or 60A $408 (faster)
1.8T Amperage of alternator = 120A
RV solonoid 3 pin isolator (not Blue Sea ACR) _________________ 1990 Multivan - "Ohana"
1.8T, Auto w/3.27 R&P + Peloquin TBD |
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beach_creature Samba Member
Joined: April 11, 2014 Posts: 532
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izzydog Samba Member
Joined: April 28, 2005 Posts: 665
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Posted: Sun Mar 10, 2019 5:54 pm Post subject: Re: Lithium Aux Battery |
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I've emailed back and forth with a guy named Jesse at Battleborn and he told me not to worry about my alternator unless its putting out more than 14.6 volts. I haven't measured my 1.8T alternator since I did my conversion more than a year ago. I'll check it soon but I can't imagine it's putting out more than that.
I plan to use the Sterling DC to DC changer between the starter and house battery so overcharging is not an issue for me.
BTW - you can find those Progressive Dynamics 110V chargers here for less with free shipping:
https://www.boatandrvaccessories.com/products/prog...wer-center
https://www.boatandrvaccessories.com/products/prog...wer-center
I think I'd go for the 45A since its only $10 more.
FYI - I have a 30A lead-acid Progressive Dynamics 110V charger (model 9130: https://www.boatandrvaccessories.com/products/prog-dyn-pd9130-charger ) that I'll sell when I get the lithium 45A version. I also have the Charge Wizard plug-in for that charger that regulates the various charge states. Nice 110V charger setup for lead-acid. PM if interested. |
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ThankYouJerry Samba Member
Joined: September 01, 2012 Posts: 2271 Location: Shakedown Street
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Posted: Sun Mar 10, 2019 8:20 pm Post subject: Re: Lithium Aux Battery |
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1.8T alternator = 120A output and usually around 14.1 - 14.4V
Btw.. All of my Battle Born notes in my previous post were from a phone converstation with Jesse. _________________ 1990 Multivan - "Ohana"
1.8T, Auto w/3.27 R&P + Peloquin TBD |
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shagginwagon83 Samba Member
Joined: February 07, 2016 Posts: 3787 Location: VA/TN
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Posted: Mon Mar 11, 2019 5:15 am Post subject: Re: Lithium Aux Battery |
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izzydog wrote: |
I plan to use the Sterling DC to DC changer between the starter and house battery so overcharging is not an issue for me.
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Overcharging is kinda vague. The batteries' BMS probably has that ability to disable charging once its at 100%.
But yes, charging at a higher amperage/voltage is where the Sterling DC to DC changer comes of use. _________________ Brandon
"Jo Ann" - '83.5 Westfalia EJ22e w/Peloquin
Instagram @joannthevan |
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a2wolfsburggli Samba Member
Joined: October 30, 2018 Posts: 279 Location: WI
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izzydog Samba Member
Joined: April 28, 2005 Posts: 665
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Posted: Thu Mar 14, 2019 4:59 pm Post subject: Re: Lithium Aux Battery |
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That multi-mode with the Charge Wizard is for lead-acid. Same with the other charger - not for lithium. I need a lithium charger. I have the 30A version with Charge Wizard now... |
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Kirsche Wasserboxer Samba Member
Joined: November 03, 2016 Posts: 104 Location: Seattle
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Posted: Fri Mar 29, 2019 3:32 pm Post subject: Re: Lithium Aux Battery |
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I see that GoWesty is now offering a 50ah LiFePO4 battery.
https://www.gowesty.com/product/electrical/25082/lifepo_aux_battery?v=
It looks pretty close sizewise to the Battle Born I have under my driver's seat. It is quite a bit cheaper in cost, but I don't see any mention of the warranty terms, or specifics of the BMS, other than a low voltage cutoff. _________________ 1990 Westfalia Vanagon
2.1 Wasserboxer |
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shagginwagon83 Samba Member
Joined: February 07, 2016 Posts: 3787 Location: VA/TN
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Posted: Sat Mar 30, 2019 5:50 am Post subject: Re: Lithium Aux Battery |
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Kirsche Wasserboxer wrote: |
I see that GoWesty is now offering a 50ah LiFePO4 battery.
https://www.gowesty.com/product/electrical/25082/lifepo_aux_battery?v=
It looks pretty close sizewise to the Battle Born I have under my driver's seat. It is quite a bit cheaper in cost, but I don't see any mention of the warranty terms, or specifics of the BMS, other than a low voltage cutoff. |
That's not a bad. Plus only $33 shipping for me. This is a great solution for those who want just 50aH _________________ Brandon
"Jo Ann" - '83.5 Westfalia EJ22e w/Peloquin
Instagram @joannthevan |
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vanagonjr Samba Member
Joined: October 07, 2010 Posts: 3426 Location: Dartmouth, Mass.
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Posted: Sat Apr 13, 2019 6:33 am Post subject: Re: Lithium Aux Battery |
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Kirsche Wasserboxer wrote: |
I see that GoWesty is now offering a 50ah LiFePO4 battery.
https://www.gowesty.com/product/electrical/25082/lifepo_aux_battery?v=
It looks pretty close sizewise to the Battle Born I have under my driver's seat. It is quite a bit cheaper in cost, but I don't see any mention of the warranty terms, or specifics of the BMS, other than a low voltage cutoff. |
I looked at this and the price is essentially 1/2(!) of any other 12.8V, 50ah battery I can find on the web (with the exception of some Asian trade sites).
I love to hear a long term review, but I’m guessing it’s a new offering. _________________ John - 86 Wolfsburg Westfalia "Weekender"
Flint reversed 1.8T W/Passat 5-Speed
LiMBO (late model bus club) www.limbobus.org
LiMBO is on Facebook too! https://www.facebook.com/groups/
FAQ thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=525798 |
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shagginwagon83 Samba Member
Joined: February 07, 2016 Posts: 3787 Location: VA/TN
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Posted: Sat Apr 13, 2019 7:02 am Post subject: Re: Lithium Aux Battery |
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I know its a great deal!
However - the deal breaker is no warranty as far as I can tell. A quality internal BMS can make or break a product. These should last more than 10 years. _________________ Brandon
"Jo Ann" - '83.5 Westfalia EJ22e w/Peloquin
Instagram @joannthevan |
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dlb154 Samba Member
Joined: December 27, 2006 Posts: 359 Location: Reno, NV
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Posted: Sat Apr 13, 2019 10:18 am Post subject: Re: Lithium Aux Battery |
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Not to hijack the tread... but has anyone considered building their own lithium battery bank out of multiple 18650 batteries harvested from laptop battery packs?
I made a portable solar generator a few years back with a SLA battery and am now hoping to convert that battery to lithium battery bank of 18650s. My MPPT charge controller allows for user set charge settings so I should be able to set it up. |
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Tobias Duncan Samba Member
Joined: January 15, 2013 Posts: 1388 Location: Taos NM
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Posted: Sat Apr 13, 2019 2:30 pm Post subject: Re: Lithium Aux Battery |
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dlb154 wrote: |
Not to hijack the tread... but has anyone considered building their own lithium battery bank out of multiple 18650 batteries harvested from laptop battery packs?
I made a portable solar generator a few years back with a SLA battery and am now hoping to convert that battery to lithium battery bank of 18650s. My MPPT charge controller allows for user set charge settings so I should be able to set it up. |
I have been looking into this for a while but have not yet started getting the stuff together.
I was going to use a snap clip system that people were raving about last year but the kit turned out to be less than reliable.
I dont think there is any way around getting a spot welder and I would want a lot of practice before building a battery to go under the drivers seat.
Seems like the ideal way to get the max amount of amp hours under there. |
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SSWesty Samba Member
Joined: August 20, 2008 Posts: 732 Location: Bellevue
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Posted: Sat Apr 13, 2019 6:09 pm Post subject: Re: Lithium Aux Battery |
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It would be a hot ticket if a supplier could do a lithium in this form factor https://www.vmaxtanks.com/XTR34-75-12Volts-75AH-Deep-Cycle-XTREME-AGM-Battery_p_164.html which should fit under the drivers seat.
75ah should net around 60ah usable which would be a hot ticket for running a truckfrig for a couple days between charges. I am sure we'll get there, this century seems to be the century of the battery. |
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jseehorn Samba Member
Joined: June 21, 2017 Posts: 20 Location: Seattle area
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Posted: Mon May 20, 2019 4:17 pm Post subject: Re: Lithium Aux Battery |
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Has anyone looked into installing a battery pack under the floor on the RH side near the sliding door? (as opposed to the LH side where the propane tank is on a camper). I like the idea of preserving inside storage space. |
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