You may find cheaper MPPT charge controllers on Amazon but read the specs and the reviews carefully. Some are ordinary controllers that somehow have been allowed to be advertised as MPPT. This one does what it says and is great for small scale experimental solar projects like the one I'm building. I especially wanted one with a display to easily monitor the parameters and what was going into the batteries without having to be measuring with my multimeter all the time. With the proper gauge wire, fuses etc. this unit (fed by a 100W monocrystalline panel which was doubled to 200W last night) keeps 180aH of batteries charged after an overnight drain running my multiple-tank aquarium set-up (25-125W, 0.25 1.7A draw through a pure sine wave inverter). My old PWM controller used to choke during peak hours (10am 2pm) and default to float mode here in the tropics (10 degrees north latitude). The Tracer keeps going all day and harvesting all the power that the other charge controller just wasted even with the efficiency drop due to panel heating.
If you've been fooling around with solar power long enough like me, this one was a breeze to set up. My only regret was not getting the larger 30A unit but I am gaining enough data to spec out a much larger system. MPPT is the way to go even with "low powered" systems like mine. I've read some comments suggesting MPPT is more useful for over 400W but for my situation with low loads, high solar intensity, high temperatures, overcast but bright, light to heavy rain about mid day to cool panels and other tropical features, this is the sweet spot for MPPT.
In my opinion this is the best value MPPT charge controller on the market! Substantial quality construction and works as advertised.
Buy MPPT Tracer 2215RN EP Solar Charge Controller Regulators 20A + Remote Meter LCD Display (MT5) for S Now
Recived controler very fast. hooked to battery bank & solar panels. Charged batteries. Controller worked as discribed. Not to hard to program controller & remote meter. I will give it the real test when I go to the hills to work mining claims this summer. Now I need to find a GOOD pure sine wave Inverter to go with my solar set up.Earl
Read Best Reviews of MPPT Tracer 2215RN EP Solar Charge Controller Regulators 20A + Remote Meter LCD Display (MT5) for S Here
I'm running solar panels for my camping trailer. A lot of blogging and youtube got me to buy the MPPT Tracer. Its a must have along with a MPPT controller. I have had it for over two months and it is will worth it, it takes all the wondering and guess work out. You can see what the battery % if when full, how much volts are going in and coming out when the panels are charging + more. The cable length is 4 meters or almost 4 feet, 8 feet would be better for trailer use. Any way I'm happy with the MPPT Tracer and controller from SAIN SONIC ;also AMAZON is great to buy from.
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I decided on the Tracer MPPT and remote meter for my UniSolar 144 Watt panel on my new RV. I had the whole thing installed and up and running in a couple hours. MPPT technology maximizes usable power to your batteries. Setup couldn't be easier, browse the manual, install the controller and remote display, choose battery type then sit back and watch the sun charge your batteries. Quality seems to be very good and works flawlessly so far.
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