Greasyrick
New Member
- Joined
- Mar 21, 2022
- Messages
- 67
Hello everyone, hope all is well, finally decided to put my system together, took me a while because we moved to a house outside the city, having a bit of an issue here, let me first state what my system is set up like:
4 AmpereTime lifepo4 12 volts 200AH with a 200 BMS in series to get 48 volts.
10 200 watts panels, two strings of 5 in series then both strings in parallel Into the combiner box 100 feet away with a 4awg HTTN cable to a Epever MPPT 150V 60A controller
Reliable 5k 48v 120 volt inverter.
I was able to program the charge controller in the user battery feature with the MT50 remote as per the battery manual specs, (multiplying the values times 4, of course)
After charging all batteries individually with a dedicated Lifepo4 charger and connected to the system, everything was fine, I have a load of about 3 to 4. 5 amps at night, the first night everything was fine, all worked fine, I believe I was at 89% battery capacity when I started, the next morning I was down to about 65%.
After a full day using some lights, a coffee maker and all 3 fridges, sometimes momentarily Going about 12 amps the batteries were at 70%, but that night I was starting with 70 % battery capacity, I was down to zero charge bars in 5 hours, of course had to switch to grid power, but my question is, I’m I doing something Wrong?
I‘m I pulling too many amps?
are batteries that bad that they last so little when you start the night with 70% charge?
Do I need more panels?
Its 9:45 am and the charge controller is getting 86 volts and 6.46 amp Its a bit cloudy.
The controller is sending 52.12 volts and 15.15 amps to the batteries, with no loads and the inverter off just today since I was down so far in charge, yesterday at noon I got about 40 amps going to the batteries, with loads on, I thought that was decent.
The batteries already show at 70% capacity with only about 4 hours of early morning sun, again, with no loads and the inverter off.
I don’t get it.
This is a head scratcher to me, any ideas will be appreciated.
Thanks in advance for your responses.
4 AmpereTime lifepo4 12 volts 200AH with a 200 BMS in series to get 48 volts.
10 200 watts panels, two strings of 5 in series then both strings in parallel Into the combiner box 100 feet away with a 4awg HTTN cable to a Epever MPPT 150V 60A controller
Reliable 5k 48v 120 volt inverter.
I was able to program the charge controller in the user battery feature with the MT50 remote as per the battery manual specs, (multiplying the values times 4, of course)
After charging all batteries individually with a dedicated Lifepo4 charger and connected to the system, everything was fine, I have a load of about 3 to 4. 5 amps at night, the first night everything was fine, all worked fine, I believe I was at 89% battery capacity when I started, the next morning I was down to about 65%.
After a full day using some lights, a coffee maker and all 3 fridges, sometimes momentarily Going about 12 amps the batteries were at 70%, but that night I was starting with 70 % battery capacity, I was down to zero charge bars in 5 hours, of course had to switch to grid power, but my question is, I’m I doing something Wrong?
I‘m I pulling too many amps?
are batteries that bad that they last so little when you start the night with 70% charge?
Do I need more panels?
Its 9:45 am and the charge controller is getting 86 volts and 6.46 amp Its a bit cloudy.
The controller is sending 52.12 volts and 15.15 amps to the batteries, with no loads and the inverter off just today since I was down so far in charge, yesterday at noon I got about 40 amps going to the batteries, with loads on, I thought that was decent.
The batteries already show at 70% capacity with only about 4 hours of early morning sun, again, with no loads and the inverter off.
I don’t get it.
This is a head scratcher to me, any ideas will be appreciated.
Thanks in advance for your responses.
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