eric.sund
New Member
- Joined
- Nov 17, 2021
- Messages
- 8
Hi!
In short:
I have issues with my MPPT that does not output sufficient voltage for charging. Solar panel seems to be working fine, but the MPPT does not up the voltage to more that 12.6-12.8. (See image, end of post)
What could be wrong, perhaps is the MPPT broken?
Background:
The system is built for my van 2 years ago. Learned a lot from Will with his videos and book!
Everything has been working flawlessly the past time until recently when I installed an inverter. I did the stupid mistake and forgot to disconnect the panel before disconnecting the batteries. I realised 30s later and plugged out the panel. I don't think the panel had much light, it was autumn in Sweden. I think it wasn't outputting more than 5W probably less.
I baned my self for the mistake but reinstalled everything and nothing seemed to have happened. Everything working as far as I could tell, though it's hard to troubleshoot when you don't receive much sunlight.
Fast forward to now, I'm in Spain with much more sun, and I have noticed that my batteries keeps draining. So I continuously check the MPPT and notice that the voltage never have gone up above 13v even tough the panel are producing over 100W. In any case far from boost (14.7V) or float (13.8V). I disconnected everything again and checked the cables, and also reseted the MPPT to default "Sealed" without success. At the moment idle battery voltage is around 12.4V.
Im asking you kindly for your assistance. What could be wrong? I guess the last resort is to buy a new MPPT.
The system contains:
- 300w single solarpanel (Vmp 33V, Imp 9.12A)
- EPEVER Tracer 3210AN 30A
- 2x 130AH Leoch AGM 12v (SLCA-12130 DT)
- EPEVER Inverter 500w pure-sine (recently installed)
In short:
I have issues with my MPPT that does not output sufficient voltage for charging. Solar panel seems to be working fine, but the MPPT does not up the voltage to more that 12.6-12.8. (See image, end of post)
What could be wrong, perhaps is the MPPT broken?
Background:
The system is built for my van 2 years ago. Learned a lot from Will with his videos and book!
Everything has been working flawlessly the past time until recently when I installed an inverter. I did the stupid mistake and forgot to disconnect the panel before disconnecting the batteries. I realised 30s later and plugged out the panel. I don't think the panel had much light, it was autumn in Sweden. I think it wasn't outputting more than 5W probably less.
I baned my self for the mistake but reinstalled everything and nothing seemed to have happened. Everything working as far as I could tell, though it's hard to troubleshoot when you don't receive much sunlight.
Fast forward to now, I'm in Spain with much more sun, and I have noticed that my batteries keeps draining. So I continuously check the MPPT and notice that the voltage never have gone up above 13v even tough the panel are producing over 100W. In any case far from boost (14.7V) or float (13.8V). I disconnected everything again and checked the cables, and also reseted the MPPT to default "Sealed" without success. At the moment idle battery voltage is around 12.4V.
Im asking you kindly for your assistance. What could be wrong? I guess the last resort is to buy a new MPPT.
The system contains:
- 300w single solarpanel (Vmp 33V, Imp 9.12A)
- EPEVER Tracer 3210AN 30A
- 2x 130AH Leoch AGM 12v (SLCA-12130 DT)
- EPEVER Inverter 500w pure-sine (recently installed)
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