inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12 
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Post by inhabor on Nov 24, 2017 15:35:02 GMT -8
Can I charge my lithium phosphate battery with my car alternator or a regular battery charger while still connected to my solar sitem? Why the voltage in my battery never goes higher than 12.6 volts? I have tree 100 watts panels and a 40amps Rover. My trimetric meter from Bogart reads that my battery is 100% charge. Today my power inverter shut off at 10.5 volts(if I remember correctly) but my trimetric meter indicate that my battery was 90% charge. What I'm missing? Also what the code ACR means in my Rover?
Thanks
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Post by tattoo on Nov 24, 2017 18:10:34 GMT -8
You said {my trimetric meter from Bogart reads that my battery is 100% charge}. That means nothing forget about it that reading is a joke... I will say that again.. That reading of 90% or 100% means NOTHING act like it's not even there...
Yes you can charge your battery with regular battery charger and solar..
What are you trying to run off of your Solar system?
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Post by rabird on Nov 25, 2017 4:23:34 GMT -8
inhabor, the trimetric uses a shunt to measure energy in/out of the battery so everything should go through the shunt on the batt neg terminal so charging and discharging can be counted and compared to input batt size so Soc is calculated correctly. The tri does need to be set up and re zeroed from time to time when the battery is truly FULL.
Renogy 100ah batt manual suggest to charge to 14.6 and keep it there till current tapers to nill, that would be FULLY charged, if feasible that would be the time to re zero the tri, note sure what eff factor for charging one should use for the tri. The batt does have a BMS and I know that controls the charge to each cell in the batt but not sure what else it does.
No idea what ACR error is, this needs solving cuz solar should charge to the default 14.4v (lithium).
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inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12
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Post by inhabor on Nov 25, 2017 14:36:57 GMT -8
You said {my trimetric meter from Bogart reads that my battery is 100% charge}. That means nothing forget about it that reading is a joke... I will say that again.. That reading of 90% or 100% means NOTHING act like it's not even there... Yes you can charge your battery with regular battery charger and solar.. What are you trying to run off of your Solar system? I was trying to run a coffee maker when the inverter shut off. |
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inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12
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Post by inhabor on Nov 25, 2017 14:45:44 GMT -8
inhabor, the trimetric uses a shunt to measure energy in/out of the battery so everything should go through the shunt on the batt neg terminal so charging and discharging can be counted and compared to input batt size so Soc is calculated correctly. The tri does need to be set up and re zeroed from time to time when the battery is truly FULL. Renogy 100ah batt manual suggest to charge to 14.6 and keep it there till current tapers to nill, that would be FULLY charged, if feasible that would be the time to re zero the tri, note sure what eff factor for charging one should use for the tri. The batt does have a BMS and I know that controls the charge to each cell in the batt but not sure what else it does. No idea what ACR error is, this needs solving cuz solar should charge to the default 14.4v (lithium). Any idea why my battery is not getting to the 14 volts? I installed the meter using the intructions that came with it. I think is working fine. My concern is why I'm not seen 14 volts. Thanks |
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Post by tattoo on Nov 25, 2017 14:56:43 GMT -8
Your battery isn't getting to 14v because you aren't getting enough power from your panel to it and you are killing it everyday... Your system isn't large enough to make coffee...
If you keep going like you are it won't be long you will be buying another battery..
Buy at least one more panel..
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Post by rabird on Nov 25, 2017 16:38:21 GMT -8
inhabor, with utility power and a charger get the battery charged, like overnight. Reset tri.
Now monitor tri, 300 watts ought to get ya 15A of charging in full sun with the panels perpendicular to the sun
Flat horizontal panels, this time of year maybe 10 amps.
Make sure solar is getting them to the mid 14s
The tri ought to show net discharge, I believe it displays amp hrs and if nothing else is on it should show charging amps.
Now this time a year ya might only be getting a total of 3 full sun hrs a day from all day long so that's 30-45 ah or so a day.
The tri ought to let you know what you are using daily and if more than what ya make then it is down hill until you find utility power or bright sun!
If ya use more than what ya make you will always be at a deficit and need to find utility power/alternator charging often.
A big load like a coffee maker will bring the voltage way down, ya may need the batt near full to make coffee, not sure what type of load Li batt can handle. An 8A/120v (960 watt) load is 80 amp @ 12v + inverter ineff. Turn the inverter off when not needed.
Load support for inverter loads is done by using the alternator anytime ya use the inverter to help the battery out.
Start with a fully charged battery and monitor from there, ya may find ya have to limit inverter use. Using tri will help you know how big each load is and how to conserve or upgrade.
If the charge controller ain't working, time to replace it.
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inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12
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Post by inhabor on Nov 25, 2017 17:29:45 GMT -8
From now on I'll be using my generator to make coffee. I was planing on installing two more 100hr lithium phosphate baterries in to my sistem, the question is:am I be able to keep them charge whith 3 100 watts panels? Thanks for all your help guys.
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inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12
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Post by inhabor on Nov 25, 2017 17:38:55 GMT -8
Can I get an inverter charger that doesn`t shut off after reaching x volts. I bought lithium batteries because I can discharge them more than regular batteries. At least thats what I read. Thanks
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Post by tattoo on Nov 25, 2017 18:58:52 GMT -8
From now on I'll be using my generator to make coffee. I was planing on installing two more 100hr lithium phosphate baterries in to my sistem, the question is:am I be able to keep them charge whith 3 100 watts panels? Thanks for all your help guys. It all depends on the draw you are putting on your batteries weather your panels can keep up.. The more panels you have the more power you are making.. You need to remember you can ONLY use HALF the power of what you can make in a solar day... Do you have a killawatt meter? If not go buy one.. Or if you have something that will tell you learn to use it.. |
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Post by tattoo on Nov 25, 2017 19:02:34 GMT -8
Can I get an inverter charger that doesn`t shut off after reaching x volts. I bought lithium batteries because I can discharge them more than regular batteries. At least thats what I read. Thanks You have an inverter right now that does just that... When your battery is basically X volts it's dead and it shuts off.. It keeps you from burning up other things like the inverter, coffee pot, computer etc... If you want to read about something read about low voltage and what it will do to an appliance.. Why would you want to totally KILL your battery?? Why not just learn how to manage your solar system wisely? You need to keep reading I think what you read is wrong about killing your battery.. |
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Post by rabird on Nov 25, 2017 20:01:37 GMT -8
Can I get an inverter charger that doesn`t shut off after reaching x volts. I bought lithium batteries because I can discharge them more than regular batteries. At least thats what I read. Thanks I've heard of some that have programmable low voltage limits. Yep, Li can be deeply discharged and no need to FULLY charge. No memory. Voltage is supposed to hold up to the end and then crater, is that what is happening to you or is the load too large? Your tri should provide much info, how much power you use and how much 300 watts makes, start fully charged and get the controller working! |
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inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12
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Post by inhabor on Nov 25, 2017 20:47:50 GMT -8
Can I get an inverter charger that doesn`t shut off after reaching x volts. I bought lithium batteries because I can discharge them more than regular batteries. At least thats what I read. Thanks You have an inverter right now that does just that... When your battery is basically X volts it's dead and it shuts off.. It keeps you from burning up other things like the inverter, coffee pot, computer etc... If you want to read about something read about low voltage and what it will do to an appliance.. Why would you want to totally KILL your battery?? Why not just learn how to manage your solar system wisely? You need to keep reading I think what you read is wrong about killing your battery.. I don't want to kill my battery. I want to be able to use more than 10% of the power out of a $900 dollar batery. My inverter doesn't let me use more than 10% and that is the reason why I decided to go with lithium. |
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inhabor
New Member
Can I run a 5000 btus ac window unit with solar?
Posts: 12
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Post by inhabor on Nov 25, 2017 20:51:54 GMT -8
Can I get an inverter charger that doesn`t shut off after reaching x volts. I bought lithium batteries because I can discharge them more than regular batteries. At least thats what I read. Thanks I've heard of some that have programmable low voltage limits. Yep, Li can be deeply discharged and no need to FULLY charge. No memory. Voltage is supposed to hold up to the end and then crater, is that what is happening to you or is the load too large? Your tri should provide much info, how much power you use and how much 300 watts makes, start fully charged and get the controller working! I think that my coffee maker is too big to run with one battery that wasn't fully charge. |
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Post by tattoo on Nov 26, 2017 6:02:37 GMT -8
^^^^^ I agree your coffee maker is to large.. That's why I keep saying that you need to manage your solar usage wisely... Learn what power usage things pull...
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