April 26, 20179 yr Hello. I am using victrom 702 BMV and ICC windows. The BMV alarm is set at 2%. If i look at victronconnect the midpoint deviation is around 2%. in ICC it is 0.2%. 1. Where is the error likely to be - BMV config? or ICC? 2. What is reasonable % for midpoint deviation? it was usually around 0.02% on ICC (which would be 0.2% on victron); I suspect the increase is as result of the SOC (lowest i have been thus far). Thanks Andrew
April 26, 20179 yr 30 minutes ago, andrew9484 said: I am using victrom 702 BMV and ICC windows. The BMV alarm is set at 2%. If i look at victronconnect the midpoint deviation is around 2%. in ICC it is 0.2%. 1. Where is the error likely to be - BMV config? or ICC? 2. What is reasonable % for midpoint deviation? it was usually around 0.02% on ICC (which would be 0.2% on victron); I suspect the increase is as result of the SOC (lowest i have been thus far). I notice that you refer to VictronConnect and ICC, but have you checked the actual BMV702's display? The reading on the BMV's display would be the correct reading - if you compare that reading to the readings on VictronConnect and ICC you will know which one of the 2 software products displays the incorrect reading. Your midpoint reading should be as close as possible to 0%. 0.2% is OK, 2% is not good.
April 26, 20179 yr Is it 0.2 percent or 0.2 volts... ive made that mistake before myself...Sent from my SM-G800F using Tapatalk
April 28, 20179 yr On 4/26/2017 at 8:03 AM, superdiy said: Your midpoint reading should be as close as possible to 0%. 0.2% is OK, 2% is not good. My batteries do 3.3% some days... I'm getting into that fun zone now. I'll keep you guys posted, I have my eye on a Lithium NMC bank. Still trying to decide if NMC or LiFePo4 is better. It's hard to find out what these things are really capable of.
April 29, 20179 yr 15 hours ago, plonkster said: My batteries do 3.3% some days... I'm getting into that fun zone now. .... on a 24V system I would think that is no longer in the fun zone - rather in the pucker zone.
April 29, 20179 yr Made a mistake... I'm looking at NCA, not NMC. Nickel cobalt aluminium. Energy density is higher than lifepo4, cycle life and price is comparable. Anyway... Off topic :-)Sent from my GT-I9195 using Tapatalk
April 30, 20179 yr On 4/29/2017 at 1:11 PM, plonkster said: Made a mistake... I'm looking at NCA, not NMC. Nickel cobalt aluminium. Energy density is higher than lifepo4, cycle life and price is comparable. Anyway... Off topic :-) Sent from my GT-I9195 using Tapatalk Please, keep us posted.
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