MPT-7210A Charge Controller Review and Teardown
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- čas přidán 18. 08. 2020
- A low cost and fairly ubiquitous charge controller that comes up with some caveats:
- Boost only - great if you have a low voltage panel and want to charge a higher voltage battery. Bad if you have a high voltage solar array and need to reduce the voltage to charge a lower voltage battery.
- Less than intuitive menus (fine once you get used to them)
- Rated to 60VDC but weakest link internal components specced to 63V. Would be near the edge of failure if you wanted to use 60V solar arrays. - Zábava
I have one of these. A lot of people including myself complain of how, everytime it reaches a peak wattage/amp, it resets itself. Even in complete sun. Everytime.
Just bought this, as I need to use lots of different 12v panels wired at with my 36v ebike battery, I also bought 12v and 5v buck converters as I want to use it as a leisure battery to power my camping!
You can actually save your settings.. check through the manual. Press OK to stop then after settings navigate back out and save.
I found that after posting the video. Admittedly time has been pretty short to try to keep to my posting schedule...
Thanks for video. I got one of these and wondered if i could use it to charge 72v, but worried about how much input current it can handle.
I find it puzzling that you don't understand the purpose of a boost module for weak solar power. Large solar panels need to step down their output, which is logical, but smaller, inexpensive panels often need a boost. When you say you don't understand, it confuses our staff at the media library because different projects require different devices.
Consider low or weak light conditions. I need a device that can detect light intensity and adjust accordingly, either by boosting or bucking. For instance, while riding my bike, I use a charge controller to step up the charge from the solar panel on my trailer to charge the bike's battery. The extra one powers the bike, and when depleted, I switch it. Normally, this solar panel wouldn't charge the battery, but with this setup, it can now fully charge it.
It's essential to match the device to the specific use case, not dismiss it as a bad product. There are more affordable charge controllers that can meet your expectations.
Anyone know for sure if MPT-7210A is safe for 36V solar panels (36V, 8A max) or could recommend a MPPT that is?
This is topology of boost converter
Yup - I was mistaken when ordering it and thought it was buck-boost, so it won't fit my needs unfortunately. Another video on my solution to that though in a few weeks when I can get to edit and post it.
@@aonomus I was watching this video it for the components labels to see what's inside while doing "lockdown" project with it. I had to tear it apart after the screw fall out of socket, so I had to dissassemble it to fetch the screw. It does the job quite well charching two 2p10s packs, I even managed to set up MPPT (during set up, long press SET to add panel MPPT voltage). Shame is only that SW does not accomplish this, but it is quite hard as the problem is nonlinear. They opt for the approximate solution, but it gets job done. I'm thinking of designing own MPPT boost charger or even buck-boost.
Is it a common negative device?