marcusdenning39
New Member
- Joined
- Apr 27, 2021
- Messages
- 4
Hi guys.
I would really appreciate any help or advice. I have a solar system running power for a shipping container. Theres 1.5kw of panels (6x250wp) and 3x20amp solar controllers (2 panels per solar controller). Two of the solar controllers are the renogy rover 20amp and the other is a different brand. I have 4x100amp lithium lifepo4 voltax batteries in parallel as a 12 volt system. Each battery has its own internal BMS. I also have a Victron battery management system connected. So everything was going great then last week I purchased the 3000w inverter charger (75amp) from renogy. This is great because it automatically switches from shore power to the batteries and is way better in terms of the inverter to my previous one and charges the battery now at the full 75amps rather than my old 30amp agm charger. So, after a day of the renogy inverter charger running I noticed that the 3 x solar controllers were going to 0 input amps for 30 seconds then re-starting, running for 30 seoncds and then stopping and restarting again. Oddly, I have a couple of ebay camping solar batteries also connected to the batteries with their own PWM controller and they were still puttting in current despite the 3MPPT controllers all stopping at exactly the same time. So I disconnected the renogy inverter charger from the batteries and then the solar controllers went back to working full time. Then I reconnected the inverter charger and everything was still working fine. But once I turned the switch back to on for the inverter charger the solar controllers went back to on for 30 seconds then off for 30 seconds. This problem would remain even when I turned the inverter charger off again. The only way to correct the problem entirely is to again disconnect the inverter charger from the battery. When I was experimenting, I put one of the solar controller LCD screens to volts and the other to amps. At precisely the time the solar controllers went to 0 amps output the voltage spiked from the 14 volts input current to like 15-17 volts. So I cannot workout whats going on. Everything was fine before the introduction of the renogy inverter charger.
One point to add. the 3 solar controllers output cable to the battery is via Anderson plug. I have connected them together using a Y 3-way Anderson plug connector so all the current is going down one line to the batteries which is fused with an inline 60 amp fuse that never trips. I know this cant be a problem because it was working for months before the inverter charger was installed but as a general question is it ok to have this occur rather than having say 3 lines of cable running to the battery bank via a busbar or similar setup?
I would really appreciate any help or advice. I have a solar system running power for a shipping container. Theres 1.5kw of panels (6x250wp) and 3x20amp solar controllers (2 panels per solar controller). Two of the solar controllers are the renogy rover 20amp and the other is a different brand. I have 4x100amp lithium lifepo4 voltax batteries in parallel as a 12 volt system. Each battery has its own internal BMS. I also have a Victron battery management system connected. So everything was going great then last week I purchased the 3000w inverter charger (75amp) from renogy. This is great because it automatically switches from shore power to the batteries and is way better in terms of the inverter to my previous one and charges the battery now at the full 75amps rather than my old 30amp agm charger. So, after a day of the renogy inverter charger running I noticed that the 3 x solar controllers were going to 0 input amps for 30 seconds then re-starting, running for 30 seoncds and then stopping and restarting again. Oddly, I have a couple of ebay camping solar batteries also connected to the batteries with their own PWM controller and they were still puttting in current despite the 3MPPT controllers all stopping at exactly the same time. So I disconnected the renogy inverter charger from the batteries and then the solar controllers went back to working full time. Then I reconnected the inverter charger and everything was still working fine. But once I turned the switch back to on for the inverter charger the solar controllers went back to on for 30 seconds then off for 30 seconds. This problem would remain even when I turned the inverter charger off again. The only way to correct the problem entirely is to again disconnect the inverter charger from the battery. When I was experimenting, I put one of the solar controller LCD screens to volts and the other to amps. At precisely the time the solar controllers went to 0 amps output the voltage spiked from the 14 volts input current to like 15-17 volts. So I cannot workout whats going on. Everything was fine before the introduction of the renogy inverter charger.
One point to add. the 3 solar controllers output cable to the battery is via Anderson plug. I have connected them together using a Y 3-way Anderson plug connector so all the current is going down one line to the batteries which is fused with an inline 60 amp fuse that never trips. I know this cant be a problem because it was working for months before the inverter charger was installed but as a general question is it ok to have this occur rather than having say 3 lines of cable running to the battery bank via a busbar or similar setup?