Price on the app only:
Special discount has ended
Please note each user for only 1 item(s)
if the goods arrival in 90 days,we will inform you by email!
Error appeared,Please try again later!
Question & Answer
based on 9 Customer Reviews
Share your thoughts with other customers and get Tomtop Points, the first 5 reviews get DOUBLE Tomtop Points!Write a Customer Review
November 29, 2017
I use this boost converter to help charge my 24-volt battery bank from the 18-volt solar panel input to my grid tie inverter. During the day with Sun on my solar modules my 24-volt battery is mainly charged by a Tracer charge controller on dedicated solar panels. My shop / Man Cave is run by solar --> batteries --> inverter only. I set this boost converter to help with short duration high demand during the day and use an AC power supply as input to the unit at night to charge the batteries. I am on peak power with the power company from noon to 7:00 pm and run on batteries during this period and fully recharge the batteries after 7:00 pm. This power program currently saves me over $80.00 a Month on my power bill in the high desert with two large evaporative coolers on thermostats. Pros: The unit works, it is easy to program, multiple program sets can be stored for easy retrieval, the display brightness level can be adjusted and the display can be turned off while the unit is in the ON state. The noisy fan level can be adjusted, I set mine at minimum and it runs cool. Cons: The unit does not lock in the power (APL) and searches constantly while on solar, this searching moves the voltage and current around constantly also. If the solar panels cannot supply the needed current (set) then the unit drops power to zero and starts ramping up again, this is inefficient. While in constant current mode (cc) the unit many times does not maintain the programmed current, cc should be the priority and rock solid. At times I find I have to turn the unit off and back on to correct the issue. The fan is very noisy -- (My Tracer charge controller handles many amps of current with no fans or noise).
September 27, 2017
Read other reviews for general overview of the unit. I wanted to just make sure to point out one important thing. I would not recommend adjusting the fan speed setting. At default fan runs on high which is loud and speed exceeds my application needs for cooling as I'm limiting the output current to 3.5amps. However when you reduce the fan speed the unit has an issue in which it reads the input voltage. The lower you reduce the fan speed the greater the fluctuation in voltage the unit reads. The serious issue I observed as a result is the output voltage to my battery jumped wildly for 20v to exceed 60v and back and forth rapidly. The upper voltage swings also exceeded the voltage output setting. This was obviously of great concern as it would ruin the battery or worse as I had it on a lithium ion pack (potential of fire!). Every other aspect of the unit runs as expected as long as you don't reduce the fan speed setting. As every other aspect of the unit works correctly my assumption is this isn't a faulty unit rather a design flaw, however that is my assumption. I did not return and test another unit as restoring the fan speed to the default high speed resolved the issue.
September 20, 2017
If you are trying to charge high voltage lithium ion batteries using commonly available solar panels this unit is about the only thing I have found that will do that. And it does it well most of the time. The one major issue with it is even the tiniest dip in solar panel output will cause the unit to reset. Its so sensitive to this that even a bird flying over the panel causing the most minute amount of shade for a brief moment will cause it to reset. When it resets it takes a good 5-7 seconds for it to begin charging again. So if you have alot of rolling clouds and sun, this can make it a lot less efficient than a higher quality MPPT controller. However, for the price I paid for it and its capabilities, its still an amazing value. In good summer sun with a cloud here and there I can get a 52v 11.5 battery charged in 2 days off a 100w panel. Not bad at all! *There are some youtube videos floating around showing where people have replaced the input capacitors with bigger ones to help with the reset issue. I haven't tried this yet but I might order another one and attempt to mod this thing.
November 29, 2017
November 14, 2017
October 19, 2017
By Daniel Sanchez
September 13, 2017
September 8, 2017
By Jan Marino
September 5, 2017
Hot Event More
Top Sellers More
Your question has been submitted successfully
Please activate your account and then to buy,We will resend the activation email to help you complete your registration.