Hi All,
I've been charging my 48V 1.3kWH pack from a 160W panel in my patio, using an MPT-7210A. I followed some Youtube videos on how to set it up, get it to auto-charge, etc. but I've discovered some odd things about it so far and I can't tell whether I have a defective unit or whether this is "normal".
First, I can't set the fan speed to anything besides 100% power otherwise the output gets unregulated and the screen flickers. I've made a video which I shared with the seller, who is asking me now how much it will cost me to "repair at a shop" so they can give me a partial refund. Otherwise they seem clueless about this issue:
Second, it does not seem able to charge constantly/consistently. Most I've seen it put out is 107W into the batteries, which is fine for me, but after 30s(?) of running at ~100W, it then shuts off the output, "rests" for a while, then slowly ramps power back up to ~100W. Is this a setting issue, is it overheating, is this just normal? This may be why I'm only getting ~110WH on a sunny day even though I should have at least 2 hours of direct sunlight.
Any comments from others who have used this cheapo controller would be helpful, as I'm still just starting out/learning about solar charge controllers.
I've been charging my 48V 1.3kWH pack from a 160W panel in my patio, using an MPT-7210A. I followed some Youtube videos on how to set it up, get it to auto-charge, etc. but I've discovered some odd things about it so far and I can't tell whether I have a defective unit or whether this is "normal".
First, I can't set the fan speed to anything besides 100% power otherwise the output gets unregulated and the screen flickers. I've made a video which I shared with the seller, who is asking me now how much it will cost me to "repair at a shop" so they can give me a partial refund. Otherwise they seem clueless about this issue:
Second, it does not seem able to charge constantly/consistently. Most I've seen it put out is 107W into the batteries, which is fine for me, but after 30s(?) of running at ~100W, it then shuts off the output, "rests" for a while, then slowly ramps power back up to ~100W. Is this a setting issue, is it overheating, is this just normal? This may be why I'm only getting ~110WH on a sunny day even though I should have at least 2 hours of direct sunlight.
Any comments from others who have used this cheapo controller would be helpful, as I'm still just starting out/learning about solar charge controllers.