Geekcreit Boost & Buck Module
DC-DC CC CV Buck Converter Board Step Down Power Supply Module 7-32V to 0.8-28V 9A
Questions and Answers
Can I use it to increase the voltage from 12 v to 18 v?
18V ->12V Ok 12V ->18V No
Can use this device for300w 30v solar panel 12 or24V battery charging purpose?
I think no, because this coverter is not designed to made the solar panel to work in its maximum power point (MPP). Solar panel hasn't an its own voltage, it depends on the point you made it working, with the load you connect to it. Solar panel can work without problems from open circuit (current is zero) to short circuit (where current is maximum but voltage is zero): in both cases power output is zero because is the product of voltage and current. Between these two extremes there's a desired point where power output is the maximum, changing continously with solar radiation and temperature, so needing an electronic able to do a tracking. In simpler battery plants, generally is battery that imposes the voltage, and the solar panel model is chosen accordingly to this voltage to have a MPP close to this voltage: it's not a tracker, but it works.
Reviews
BELOKOTA68
on 04 December 2021
It's okay. Thank you! CV mode - red LED, CC mode - blue LED.
BG352436144
on 17 November 2021
Ordered 5.11,2021 was delivered by courier from Shipment 17.11.2021.Not tested yet
Bricola
on 18 October 2021
A good Step Down module, that can regulate Voltage and Current. Not the first time I use this product. Notice that the functions of the pot are not indicated on the board. With a voltmeter it's easy to see which one is for voltage and which one for current. Be careful, mine has one power transistor isolation pad not really fully covering the heating. The screws were not tide too. I will recommand a little inspection before use. The two 10 kohms pots can be replaced by external one if you need.
camilosoveral10
on 23 March 2021
Incredibly small but very good! Order arrived without delay and without problems, nothing damaged and well packaged. I have already tested and was very pleased, I put in the entrance 22 Volts DC taken from my source and was regulating the output and took several voltages as you can see in the photos. So I recommend it, it didn't heat up and finally I say it's a good regulator from DC to DC. We must be careful not to exceed the maximum voltage allowed by the manufacturer. Thank you Banggood
LocoLoco
on 16 November 2020
Delivered promptly, according to the schedule, everything works.
lubo37
on 18 September 2020
this voltage and current converter is Ok. it works properly. I have no problems with it. only need to replace the controllers for rotary and larger. I am satisfied This convert and converter is Ok. works together. I have no idea with it. it is only used to protect the ingredients with rotary and chemical uses. I am protected
SADMAN1
on 18 January 2020
Arrived in Algeria
ve7it
on 15 December 2019
I love these supplies. I used them to build a variable DC supply for my bench. I changed the pots for panel mount 10 turn pots and fed these supplies(3) with a high current 24V supply. Most of the parts for this project were source from banggood including the laser to engrave the front panels.
spoolin
on 12 October 2019
perfect thing for setting LED current
Avi
on 27 March 2018
Good stuff! One heatsink gets real hot though when (in my case) input is 19.5 volt to output 12.6 volt @ 4 amps. Installed a fan to fix it.
