First look at Ming He's MPPT solar charge controller.
Unit kindly supplied by Banggood.com - http://bit.lc/4Z94
Unit kindly supplied by Banggood.com - http://bit.lc/4Z94
By Julian
Youtuber, shed dweller, solar charge controller aficionado
Hello, thanks for your video, could you tell me if the mppt 7210A could charge a 72v LiFePo4 battery? (100% at 84v) thanks
That part is big shit. If the solar voltage is higher than the final battery voltage set, then unfortunately it will not be switched off, so the battery will be overcharged and it will be unpleasant if the battery acid runs out.
A catastrophe can only be prevented with an external connection.
This is perfect for an e-bike. I love my MPT-7210A. Click on my name I did a video on it with a bunch of stuff.
Hi Julian, thanks for sharing, just what I'm looking for. Are you still you using this product? Best regards, Edward
Thank you very much
I have a 36 volt battery for a 4 wheel peddle bike with an e-bike motor. If I understand you correctly, I can use a 12 volt panel with this charge controller set for 36 volts and it will charge the battery completely. Is this correct?
What is max wattage it can transfer from panels to battery?
Ill want to use this with 2x300w panels for start for my barn. And charge ups 24v 2kw in capacity.
We never found out what would happen with a 12 V battery and a 17 v solar panel.
Does this Company Make a 20 AMPS . Or 30 AMPS Charge Controller ..
Thank You 😊
Is that kinda mppt worth investing in.
I've just fitted two of these in my van running on 12 volts from a 48 volt solar panel 2 Days Later the controller had a hissy fit shut my electrical system down to 2.5 volts ended up having to remove the earth lead from the controller to get my full 12.5 back personally speaking I think they're a load of rubbish so now I'm going to look for some better controllers to do the job properly still can't get my head around why they use the Solar to power up the controller
Many users are reporting unexpected low charging currents. I faced the same and these issues can be easily explained. I did some in dept investigations to find the root cause and here is what I found:
This controller cannot accept more than about 6.5A (my observation) as input current. That's how it must have been designed. So the maximum available input power in Watt is: Vin x 6.5A which determines the available charging power. If more charging power (charging Voltage times charging Current) is needed, it can only be archieved by increasing the input voltage Vin when the input current is at its max. Normally a boost converter would increase the input current to keep track of the requested output power but when it reaches 6.5A it's over and out with this device. It's a undocumented limitation. For me it means that I can't charge my 42V ebike battery with more than about 1.7A with a 12V battery as power source.
There is a 'workaround' however (don't laugh): connect a decent boost converter on the input of the MPT-7210A to increase the input voltage … I told you: dont laugh! 😀