Lux ac battery controller

martin2020

tried switching everything off and on including lux, all batts level and still same issue.

moved canbus cable to bottom battery to make it master and its gone from 7a to 25a charge rate so maybe bms is dodgy on top battery time will tell i guess

ianatkin

martin2020 said:

tried switching everything off and on including lux, all batts level and still same issue.

moved canbus cable to bottom battery to make it master and its gone from 7a to 25a charge rate so maybe bms is dodgy on top battery time will tell i guess

Have you done anything with the DIP and rotary switches on the batteries if you changed which one is acting as master? Each battery needs different switch positions. 

martin2020

ianatkin said:

martin2020 said:

tried switching everything off and on including lux, all batts level and still same issue.

moved canbus cable to bottom battery to make it master and its gone from 7a to 25a charge rate so maybe bms is dodgy on top battery time will tell i guess

Have you done anything with the DIP and rotary switches on the batteries if you changed which one is acting as master? Each battery needs different switch positions. 

no not touched any dip switches, they are all set to off on all 3 batteries for the last 4 years and its been fine

ianatkin

martin2020 said:

ianatkin said:

martin2020 said:

tried switching everything off and on including lux, all batts level and still same issue.

moved canbus cable to bottom battery to make it master and its gone from 7a to 25a charge rate so maybe bms is dodgy on top battery time will tell i guess

Have you done anything with the DIP and rotary switches on the batteries if you changed which one is acting as master? Each battery needs different switch positions. 

no not touched any dip switches, they are all set to off on all 3 batteries for the last 4 years and its been fine

Fair enough, the Pylontechs might be different to my UHomes

Encription1

Hi all
'On Grid cut off %'.  and 'Off grid cut off' seems have disappeared. It has on mine as well. My problem now is that I had set "On grid cut off " to 80% ready for wash day. Effectively leaving me 20% battery.
Now I cannot go back down. Infinityinnovations/ Powertek and my Installer don't seem interested in helping. Maybe because of Bank Holidays.
There is a "reset all" button at the Bottom of the "Maintain" Page. What are your thoughts on using that?
Or is there another way to lower the 'On Grid cut off %'

Alnat1

It was there on the app until a few days ago as I'd changed my usual 10% up to 15% as the batteries were losing more when discharged, I think because the weather was really cold.

Now it's warmed up a bit I can't put it back to 10%, grrrr.

ianatkin

I haven't tried this myself but hopefully the cut-off can still be adjusted in the menu on the inverter itself?

Encription1

YES.  I turned The Inverter and batteries off for 5 min's, I don't think I had to do that but the manual said it would do a reset. After that It asked for type of battery so It did some level of reset. went to the SOC page and It still had 80% in memory but I was able to reduce to 15%. It also kept the last charge times. But anyway success.

PolarSolar

Hello all /  Happy New Year etc

I've been reading through all the conversations on here and finding alot of it very very useful, and have learned a lot.  Fantastic that many of you share your accumulated experience and knowledge.  Thanks

I've had solar panels for about 12 years (small system 6 panels = max. 1.44kW output) .  Just before Xmas I had 2 Hanchu-ESS batteries (very similar to Greenlinx) installed (6.4kWh capacity) together with the Lux Power AC 3600 controller and I'm gradually getting my head around the settings & data provided by the LuxPowerView app and the similar monitor & data via browser on PC.

I'm hoping soon to switch to a different electricity tariff which will allow me to charge the batteries at night for use during the day.

In the meantime:  a few questions to anyone that knows. 
I'm thinking about how best to treat the batteries to maximise lifespan.

1)  When charging the batteries is there an ideal AC charge power rate?  100% = 3000Wh  I've set it to charge at 60%  Does it make a difference?  (apart from taking a bit longer)
2) When charging batteries I've been told it's OK to charge them to 100% SOC - is that true?  Or is less a bit  better ?  
3) On the LuxPower "maintain" settings,  what are the Forced Discharge settings for?  (I've no idea)
4)  If the batteries are to be left unused for a few weeks/ months cos no one is in the house and eveything is off  is it OK to leave them at their minimum SOC = 10%   OR
5)  Is it possible to charge the batteries to 60-70% (or whatever is best)  and then somehow block / prevent them being discharged / charged further and just leave them for a few weeks / months.  Charging and discharging the batteries by itself uses up electricity which is unnecessary if no one is around.

Any responses much appreciated
Cheers
PolarSolar

Solarchaser

Hi and welcome.
I'm not familiar with your batteries, but they should have a max charge and discharge figure on them.
1. It's my belief that it's best not to charge and discharge at their maximum, but really that's just a feeling.
I like 80% but that's more a finger in the air thing to be honest.
The lux 3600 in theory charges and discharges at 3.6kw,  in reality it charges around 3.6kw, but will only discharge around 3.3kw in my experience. 
Used to be larger, but I believe that lux have throttled it back intentionally for some reason.
2. Fine to charge to 100%
3. If you were on an export tarrif like octopus agile export that say gave you £2/kwh between 2pm and 4pm, then you may like to set your batteries to force discharge at that time.
I've never done this, but there are forum users who do.
4. I'd say no, if you leave them at 10% and the inverters are on, they will probably charge them if charge falls, but really if its winter so you are getting no solar help, id probably charge them to say 60% and then switch the batteries off as they do self drain just using their leds etc.
If its Summer, they will probably charge from solar a bit and then run your house background loads