jimmy
Solar Lover
Posts: 52 
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Post by jimmy on Jan 3, 2018 14:46:19 GMT -8
Yes I just added 2 that's a total of 4 right now. I will have to build a bigger cabinet to expand any further. Its crowded right now. What is your situation. You are off grid right? You have 8 hundred watts and how many batteries? How old are they?
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Post by tattoo on Jan 3, 2018 15:58:05 GMT -8
Yes I just added 2 that's a total of 4 right now. I will have to build a bigger cabinet to expand any further. Its crowded right now. What is your situation. You are off grid right? You have 8 hundred watts and how many batteries? How old are they? Yes I am totally off grid, 6 batteries with 645ahs, Yes 8 100w panels.. But I don't run anywhere close to what you do. I'm real conservative with my power.. No heaters, blenders etc... Just a fridge, freezer, several lights, radio, tablet and charge my phone etc... Like I said I use about 600w a day and make about 1.1kwh a day this time of year... Batteries are one year old and are all at 1270 with a hydrometer... Have you ever checked you batteries yet?? |
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jimmy
Solar Lover
Posts: 52
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Post by jimmy on Jan 3, 2018 16:58:19 GMT -8
I checked a few cells playing around. Saw the line I was supposed to fill it up to. Started over. Spent time drawing acid out after I found out what level they were supposed to be at. Been to busy lately getting every thing together. I have a 400 sq foot house. A 16 ft rv with a 200 watt panel hooked up. I ran a line to the house we charge cell phones an tablets with that. So you have 6 6volt batteries. Why did you go with 6 volt is there any advantage? You run at 12 volts right. So if you ran at 24 volt you could go up to 16 panels right? You must have wood for heat. Where do you live. Its cold as hell here. 27 degrees tonight.
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Post by rabird on Jan 3, 2018 17:33:19 GMT -8
26.47 divided by 89.4 = .296 time 4.22= 1.249pv amps (Right?) Wonder why that is not on the controller readout? Bird do you know anything about relativity besides E=MC squared? yes, that fraction of panel amps for those voltages. I have not read the manual on that controller and do not know what the possible display options are 6v golf cart batteries have thicker plates and last longer. wanna read up on psuedo deep cycle? try www.pbase.com/mainecruising/deep_cycle_battery&page=1which would ya rater have, from page 2 of above blog  what I know about relativity is it is based on the observer! If ya travel at the speed of light and turn on your head lights do they do any good? |
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Post by tattoo on Jan 3, 2018 18:15:43 GMT -8
I checked a few cells playing around. Saw the line I was supposed to fill it up to. Started over. Spent time drawing acid out after I found out what level they were supposed to be at. Been to busy lately getting every thing together. I have a 400 sq foot house. A 16 ft rv with a 200 watt panel hooked up. I ran a line to the house we charge cell phones an tablets with that. So you have 6 6volt batteries. Why did you go with 6 volt is there any advantage? You run at 12 volts right. So if you ran at 24 volt you could go up to 16 panels right? You must have wood for heat. Where do you live. Its cold as hell here. 27 degrees tonight. Like bird said 6v deep cycle batteries are stronger and last longer than a common 12v... Yes they are set up for 12v, and yes I could have more panels with 24v but I don't need to go up to 24v at this time.. But I might in the future.. My cabin is 765sq feet, and yes I heat with wood... |
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jimmy
Solar Lover
Posts: 52
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Post by jimmy on Jan 4, 2018 7:11:58 GMT -8
When I add more batteries can I add 6 volt mixed with my 12 volt as long as I add 4 to equal 24v? Full sun today at last. So my 4 batteries are charging. I turned on the space heater on low and it draws 500 watts. If I turn it off will the batteries charge faster? How much charge can they take. Can they charge at the full rate the 1500 watt panels will give them?
I guess if you were waiting for somebody to pick you up the car would probably hit you at the same time you saw the light. We don't have to worry about that till tomorrow, or is that today?
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Post by tattoo on Jan 4, 2018 8:02:48 GMT -8
I don't think you can mix 6v and 12v batteries but I don't know anything about that...
What I have read heaters and air conditioners are the worst things you can try to run off solar... I would hook your heater to the grid side... Since you have it to use..
You need to let your batteries totally get to float mode for a couple of days before pulling them down with a load... I think that's how you are killing your batteries not letting them get fully charged everyday that you have full sun.. If it's cloudy I can understand..
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Post by rabird on Jan 4, 2018 9:20:31 GMT -8
in boost or bulk of whatever ya call it batteries will take all they can, once they get to set pt or 14.6v or whatever it is the controller limits energy going to the batts so they don't go over this set pt. As the batts get fuller and fuller the CC limits more cuz the batteries don't need as much and eventually the CC changes mode to float.
So if the batts are charging and their voltage is below set pt then turning off any load will charge them faster.
During the time that the power is tapering (maintainng set pt voltage) there may be excess that can be used!
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jimmy
Solar Lover
Posts: 52
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Post by jimmy on Jan 4, 2018 9:52:33 GMT -8
I have been at 29.4 v for an hour using 550 watts inside. It still says boosting. Soc says 94% its been moving up. I am thinking when soc reads 100% it will move to float. Ill keep an eye on it.
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Post by tattoo on Jan 4, 2018 13:24:25 GMT -8
I have been at 29.4 v for an hour using 550 watts inside. It still says boosting. Soc says 94% its been moving up. I am thinking when soc reads 100% it will move to float. Ill keep an eye on it. Yes sir when it gets to float for a while, the SOC will say 100% after a while but it's BS once the sun goes down the SOC will go to about half 50% so stop worrying about it... It means nothing... The ONLY thing that does mean something is what your Hydrometer says.... I would worry about that rather than the SOC.... What does your Hydrometer say the health of your batteries are? |
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jimmy
Solar Lover
Posts: 52
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Post by jimmy on Jan 5, 2018 6:18:18 GMT -8
Not much time this morning. Learned you have to keep it level and fill it to correct line. My April battery is at 12.65 all cells. My other batteries are 1 week old didn't get to check yet. It is 9 am and full sun now controller says 16 amps 28.3 volts. Drawing 1.7 amps in the house.
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jimmy
Solar Lover
Posts: 52
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Post by jimmy on Jan 5, 2018 6:22:24 GMT -8
So the hydrometer will tell me if I develop a dead cell and tell me the true soc. I'm with you on the cotroller soc that is nuts. When I go to float what reading should I get on the hyrometer 12.72?
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Post by tattoo on Jan 5, 2018 7:50:51 GMT -8
So the hydrometer will tell me if I develop a dead cell and tell me the true soc. I'm with you on the cotroller soc that is nuts. When I go to float what reading should I get on the hyrometer 12.72? SOC, float or anything else that the CC tells you has nothing to do with a Hydrometer...Yes if it shows you 1270 you are fine but I'll bet they will be closer to 1150... Let us know what you find out... |
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Post by rabird on Jan 5, 2018 8:12:40 GMT -8
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Post by tattoo on Jan 5, 2018 14:46:29 GMT -8
Yes sir the temp will really make a difference....
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