Lux ac battery controller

EVandPV

Solarchaser said:
The cables are rated at 70a, so if you were really seeing 111a I'd be quite concerned. 

It shouldn't even be possible with one inverter, the max is 3.6kw or 70amps.

Solarchaser

To be honest looking over it again I'm a little confused.

When mine start charging at 0:30 they go straight to 2.4kw.
And if they are on full charge they go straight to 3.6kw (well usually about 3.4 i think), there is no time where they start off at less power and then increase.
At around 90% batt charge the current reduces, just as it does with the car.

I can only imagine the ramp rates are to do with the cold, and the 111a is actually just a typo and was 11a?? Because otherwise it would be drawing over 5kw

EVandPV

Yeah I guess the batts would start off at a lower charge rate if cold then will gradually warm up allowing a higher charge rate ??
Mine are indoors so always start off charging at the max rate set.
My Zoe won't charge at the max rate on a rapid charger if the batts are cold.

mickyduck55

Hi

I must be misreading this then What does this indicate

It is eiither 44.4, 66.6 or 111....

Starts day at 44.4, changes to 66.6 and on a good day then displays 111... this screen cut is from May

overnight charge display, they do ramp up after a time as seen here..

mickyduck55

Cannot add this above but the change from 44.4 to 66.6 corresponds to the shift on the chart

EVandPV

No idea what the 111 is all about Mick, assuming you only have the one inverter.
But it does look like temperature is affecting your initial charge rate. I'm sure you said at some point your pylons are in the garage ??
If you don't get a full charge at 100% charge power, might be worth trying a bit of insulation like Solar said.

mickyduck55

I do only have one inverter..... but it does say on the heading...."MaxChgCurr (A)"... I have no idea either LOL

Yes they are in the garage with no insulation I will see how it goes tonight upped rate to 90 %

Its only 1kW short but thats 8p extra when I need it during the day !!!!!!!!!

Solarchaser

If you could partially box them in with the inverter, or put the inverter below, then the heat from the inverter could help heat them up I guess.
The other option would be add another battery.
If they are all drawing 15a, then adding another means you can charge at 60a.

Or I guess try charging at 95%, as then when it gets to 3:30am and its happy to take the full charge, you have another kwh to add into the batteries.

Solarchaser

mickyduck55 said:

Cannot add this above but the change from 44.4 to 66.6 corresponds to the shift on the chart

Whats weird here is that your chart doesn't seem to correspond to the voltage.

To explain a little, the batteries run between about 48v and 52v, so most folk call them as a 50v battery.
P= I x V so 50v x 66.6a =3330 or 3.3kw, but your step on the graph goes to around 2.5kw maybe.

Same deal on the 44.4a = 2.2kw. But that actually looks right on the graph.

I thought previously you said you were charging at 80% so going by my own. Thats about 2.65kw which could be what your graph indicates. 
But 2650/50 = 53a, not 66.6a

Hmmmmm

Edit.
I've looked on tablet for similar data.
I assume you are in data, and then history data.
So the three figures before the 44 and 66 are temperatures,  one is inner, the other two are radiator, then tbat at 0c.
So on the line where you have 44.4 and 66.6 I have 100 on every line.
That line says maxchg 

I take that to mean of the batteries theoretical max charge, how much can you give it based on.... maybe its current temperature.

So because mine are warm I can give them 100%, but due to yours being cold, you can only give them 44%, and then as they warm a bit, 66% or 2/3rds of max charge.

Thats what I reckon it is, not amps

If you scroll all the way back to the left, you will see 4th column is battery voltage vBat(v), then 5th is SOC (%),  then 6th is Ppv(W) which is the solar, and then 7th pCharge(W) will be the actual wattage you are charging at.

Assuming your data tables are same as mine

mickyduck55

Solarchaser said:

mickyduck55 said:

Cannot add this above but the change from 44.4 to 66.6 corresponds to the shift on the chart

Whats weird here is that your chart doesn't seem to correspond to the voltage.

To explain a little, the batteries run between about 48v and 52v, so most folk call them as a 50v battery.
P= I x V so 50v x 66.6a =3330 or 3.3kw, but your step on the graph goes to around 2.5kw maybe.

Same deal on the 44.4a = 2.2kw. But that actually looks right on the graph.

I thought previously you said you were charging at 80% so going by my own. Thats about 2.65kw which could be what your graph indicates. 
But 2650/50 = 53a, not 66.6a

Hmmmmm

I was set to 80%  Probably best if I dont ever look at this data as I dont understand it

I could export it if you are interested.. maybe Im looking in entirely the wrong column ?