54 replies to this topic

[buckland]

Thanks for the reassurance. These are mighty $$$ so want to treat them right.

[Wallowa]

One more question for Battleborn gurus.... I have my new 2nd Battle born I will be installing this month in parallel. So 200 Amp/hours 12V.  I have 160W roof/100W flex portable panels = 260W .  But right now just my 10 month old single 12v Battleborn in Camper.

 

My question is.....as I store my camper in a barn the battery (with main breaker off) just sits there at 13 V through the winter and actually drifted down to 12.8V. I checked on it the other day and thought I had better plug in shore power to bump it up. I have my 100/20 Victron set to the LiFePo4 setting that has 14.2 V  with float at 13.3 V..... I have the dongle attached to the inverter for LiFePo4 battery charge profile.... but after 24 hours on shore power.... nothing on but the smoke detector .... it was still at 13.3 V.

Am I missing something ....isn't it supposed to charge up to 14.2 ? 

 

 

What charger/converter are you using for 110 power shore power charging the BB Li?

[buckland]

I only occasionally (once a year?) plug shore power into my camper. The Iota converter has the IQ4 dongle for the LiFePo4 profile and it "works". The Victron 100-20 is set for LIFePo4.  2011 Eagle build.

 

Attached Files

•  Screen Shot 2021-05-04 at 7.56.30 PM.png   248.93K   24 downloads

[rando]

If the Iota is really taking it up to 14.8V, that is too high, and it may have tripped the BMS over voltage on your Battleborn, which would explain why it dropped back to 13.3V.     That looks more like the standard Iota set points, rather than lithium specific set points. 

[CougarCouple]

Hi Buckland
I have been in contact with both Battle Born and IOTA for charge profile.
This is from BB.

Hi Russ,

Bulk and Absorption voltages are normally set to the same value, but with the BB you can set them anywhere between 14.2v and 14.6v

For a float, I recommend a voltage between 13.4v and 13.8v.


There are some IOTA chargers that will benefit from the lithium adapter.
Mine from ATC is a DLS-30 IQ4 will not Benifits and the settings are 14.8B 14.2A, 13.6F
However there is a pot which is adjustable
Here is the link they emailed me.

Click link below to see instructions:
http://www.rivergate...tAdjustment.htm


Also this will void your warranty, and the adjustment affects all charge settings.


I haven’t done this yet so can not provide my results yet. Still waiting on battery.



Russ

[buckland]

Yes  mine is A-ok for lithium but the pot adjustment is great! Any excuse to void warranty they jump at but I think that will do the trip and save $$$$$. Good luck with your new set up. You are gonna love that battery.... charges back up in half the time. And what a weight savings.... last battery I'll have to buy too !

[buckland]

Here is there complete  manual for the IQ4 ... note the charge rate per cell on chart.

 

Attached Files

•  IQ LiFePo4 DLS charger :Iota.jpg   135.58K   21 downloads

[Wallowa]

For what it is worth...after digging into the function of chargers/converters used and BMS with a BB battery here is what I found out from talking to BB:

 

BMS Controls..

 

Charge shut-off 25 degrees F and 134 degrees F...............& @14.7V +

Discharge shut-off -4 degrees F and 140 degrees F............& @ 10 V -

 

Other Recommendations/limiters..

 

Max charge rate recommended 50amps per 100ah capacity

Best charging range for life of battery 20-95% SOC

Loss per month from 100% SOC when stored 2-3%

Maintaining over winter on charger not recommended as it unnecessarily cycles battery and reduces life cycles; disconnect to store is best

Charging at lower temps lessens battery life; optimal 70 degrees F

100% SOC @ 14.2V and when cell modules passively balance the level of charge between cells

 

As stated by others on this forum 14.4V and 13.6V are MAX voltages from charger to battery and less is safer and prolongs battery life

 

================

When I store my camper in shop, I will disconnect and not leave on converter 110V like I did my AGMs; but disconnect at 95% SOC

 

I intend to use 'VictronConnect' w/Blue Tooth to program and limit the 110V and solar charging of my heated Battle Born 100ah...Victron Converter, Controller and BMV 712 monitor.

 

Just me and I am learning so take all this with a grain of salt!  I could be wrong...

 

Phil

 

Ps...Heating BB , which is controlled automatically between 24-45 degrees F, assures  that discharge and charge is possible and not stopped by BMS

Edited by Wallowa, 05 May 2021 - 05:42 PM.

[ri-f]

If you're interested, this is the BB manual, which spells out, pretty clearly, their charging parameters and suggested settings, and as has been suggested their BMS high voltage cutoff trigger is  > 14.7v:

 

https://dragonflyene...anual-FINAL.pdf

 

My settings for the BB 100AH follow:

charged voltage: 14.2v

absorbtion: 14.4v

float: 13.2v

max charge current: 30A

tail current 4.00%

charged detection time: 3m

puekert exponent: 1.05

charge efficiency factor: 99%

current threshold: 0.10A

 

I never plug in to shore power. My solar keeps battery topped off year round. My resting volatge is typically 13.4-13.5, and my max voltage is typically 14.4-14.5 at these settings. If I was storing the camper in a barn, I would charge up the battery to 100%, then disconnect the cables and let it rest and expect a 3-5% drop in SOC per month, which would probably equate to a 50 % discharge over about a year's time.

 

Rich

Edited by ri-f, 05 May 2021 - 06:12 PM.

[Wallowa]

If you're interested, this is the BB manual, which spells out, pretty clearly, their charging parameters and suggested settings, and as has been suggested their BMS high voltage cutoff trigger is  >14.7v:

 

https://dragonflyene...anual-FINAL.pdf

 

Rich

 

 

Thanks Rich, I missed this source...but then I miss alot!

 

Phil