[RE-wrenches] Lithium Ion Batteries

Sun Mar 22 15:14:57 EDT 2020

Specifically with Blue Ion, the installation manual recommends 48V as 
LBCO, but also recommends setting it a bit higher:

"Recommended Low Voltage Disconnect Setting: 48 VDC (~2-10% State of Charge)
BMU will power down the Blue Ion 2.0 cabinet at 44 VDC (<1% State of Charge)
Based on system discharge patterns, SoC and voltage correlations will vary.
We recommend you err on the side of caution with a higher LVD setting 
and adjust as necessary.
To prevent a dark start event, we recommend leaving a little reserve 
“fuel in the tank”."

I have used 48VDC with success, and had one system indeed shut down at 
44V, leaving 1% left to reboot.

Allan

On 3/22/2020 12:44 PM, Ray wrote:
>
> Blue Ion, and Simpliphi that I know of.
>
> Ray Walters
> Remote Solar
> 303 505-8760
> On 3/21/20 2:48 PM, Dave Angelini Offgrid Solar wrote:
>>
>> I see what you mean Ray. Sorry I misread your mail. There are not too 
>> many batteries out there that need LBCO above 48V. Which ones are you 
>> talking about please?
>>
>> *Dave Angelini Offgrid Solar*
>>
>> *"we go where powerlines don't" http://members.sti.net/offgridsolar/ 
>> e-mail offgridsolar at sti.net <mailto:offgridsolar at sti.net> text 209 
>> 813 0060*
>>
>> On Sat, 21 Mar 2020 11:18:21 -0700, Dave Angelini Offgrid Solar 
>> <offgridsolar at sti.net> wrote:
>>
>>> Hi Ray,
>>>
>>> Which XW? There are 3 now. The old graybox XW defaults at 44V LBCO 
>>> and the range is 40 to 48V. There also was firmware back in its day 
>>> that got older units updated. Schneider still has the firmware under 
>>> discontinued products.
>>>
>>> XW+ is default 44V and adjustable 36 to 44 vdc.
>>>
>>> XW pro is running downstairs and I will take a look. It would be my 
>>> guess that it is the same as XW+. I think one needs to be sure they 
>>> are in Advanced settings to tweak LBCO also.
>>>
>>> I am not plugging Schneider and have done work for both Outback and 
>>> Schneider as well as my clients. Hope this helps.
>>>
>>> *Dave Angelini Offgrid Solar "we go where powerlines don't" 
>>> http://members.sti.net/offgridsolar/ e-mail offgridsolar at sti.net 
>>> <mailto:offgridsolar at sti.net> text 209 813 0060*
>>>
>>> On Sat, 21 Mar 2020 11:46:21 -0400, Ray <ray at solarray.com> wrote:
>>>
>>>     We've been having good luck with SImpliphi, the pricing has
>>>     recently gotten much more competitive.  As it's names states,
>>>     its simple.  Each 3.8 kWh unit has an 80 amp breaker built into
>>>     the top, weigh about 75 lbs, and are a bit smaller than an L16
>>>     but with carry handles.  We use an insulated 2 pole combiner
>>>     block to run all the parallel conductors to the main 2/0 cable. 
>>>     No monitoring, but they do have an handy setup guide with
>>>     recommended settings, specific for each manufacturer (including
>>>     Outback).
>>>
>>>     Note to all:  Schneider XW can still not set its LVD above 48,
>>>     which basically makes it incompatible with most Li+ batteries. 
>>>     Their tech support has been abysmal as well.   We're looking
>>>     forward to them as one of the larger companies in the business,
>>>     to put additional resources into their engineering, and come out
>>>     with at least a firmware update to correct this problem.
>>>
>>>     Ray Walters
>>>     Remote Solar
>>>     303 505-8760
>>>
>>>     On 3/20/20 3:59 PM, David Katz wrote:
>>>
>>>         Hello Wrenches,
>>>         I am working with some people that want to use a 20 kw-hour
>>>         to 30 kw-hour 48 volt lithium-ion battery with an Outback
>>>         Radian and Outback FM charge controllers.
>>>         They are considering using Discover, Blue-Ion, Battle Born
>>>         or SimpliPhi batteries.
>>>         Does any one have any recommendations of which battery
>>>         functions best with the Outback system.
>>>         Thanks,
>>>         David Katz
>>>
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-- 

*Allan Sindelar*
allan at sindelarsolar.com <mailto:allan at sindelarsolar.com>
NABCEP Certified PV Installation Professional
New Mexico EE98J Journeyman Electrician
Founder (Retired), Positive Energy, Inc.
*505 780-2738 cell*

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