[RE-wrenches] SOC, FNDC, and LFP batteries

[Dave Angelini Offgrid Solar]

Just another reason that Soc needs to originate from the BMS in an OEM
battery system. It needs to get into the Schneider and Outback web portals
for monitoring. Is there anyone building an Offgrid battery besides
Discover AES that does this? I don't think so. 

On Sat, 18 Aug 2018
09:24:09 -0400, Tump  wrote: Yep its is terrible! Spoke w/ a former member
of their (OB)'s tech support and was told that the counting of amp hours
both up  border-left:#1010ff 2px solid; margin-left:5px; width:100%"> On
Aug 17, 2018, at 3:09 PM, Lou Russo  wrote: 
   Hello All, 
 Does anybody
have any insight in getting the SOC to report accurately on the Outback
FNDC when using batteries that have a minimal voltage curve? I have several
systems with LFP batteries that have both a eGauge (communicating directly
with the battery BMU) and a FNDC and I get wildly different SOCs. In a
typical 24 hour period (12am-12am) I get SOCs on the FNDC that vary 2% to
34% of what the battery BMUs are reporting. I am assuming that the BMUs are
reporting accurately. I would think a 1%-5% difference would be acceptable.

 Any help or thoughts on this subject would be greatly appreciated.  
    
 Aloha,   Lou Russo lou at spreesolarsystems.com [2] 808 345 6762 Spree Solar
Systems LLC  CT-34322          
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Dave Angelini Offgrid Solar
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