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This is a MPPT solar charge and discharge controller;
the charging efficiency is 15%-25% higher than that of ordinary ordinary solar controllers;
the MCU precisely controls the MOSFET switch to control the battery charge and discharge, effectively extending the battery life;
Product parameters
Rated charge current:100A
12V battery system:open circuit voltage ≤48V(Voc) maximum. PV input power:1300W
24V battery system:Open circuit voltage ≤96V(Voc) maximum.PV input power:2600W
System nominal voltage :12V/24VDC Auto identifying
Battery voltage range: 12V/24V
Max.PV open circuit voltage:96VDC
Power terminal:8AWG
Dimensions:11.8 * 7.87 * 3.95 (in)
Weight: 5.6lb
Warm Tips:
Battery must be connected first !
Never connect the solar panel array to the controller Without/Before a Battery.
Never connect any inverter/ wind/ Alternator/ Charger into the charge controller!
Ensure the battery voltage is enough.(>9V)
Never exceed the max input power/Voltage of your controller.
Package List:
1 x 100A MPPT Solar Charge Controller K100A-new
1 x Temperature sensor
1 x User Manual (English)
1 x screw
The solar controller is a professional product. If you have any questions before installation, please email us; we will answer as soon as possible; the professional technical team will guide the installation; worry-free after-sales guarantee，180-day worry-free warranty
Bruce Burr
Reviewed in the United States on February 7, 2025
works great
Leonard Owsiany
Reviewed in the United States on September 16, 2024
Works like a charm, easy installation, but only by folks who can read ...
Rye4
Reviewed in the United States on June 12, 2024
Heavy duty. Easily mounted. Easy to read display.
Ron M.
Reviewed in the United States on June 17, 2023
After the seller had me change my solar array into a series connection from the parallel I had it in , the controller started to work, and it's working well. the instructions are impossible to understand and I'm not using the load terminals so can't include that in my review.
Johanne
Reviewed in Canada on August 30, 2022
Ce produit a arrêté de fonctionner tout seul ca arriver une couples de fois on a cru que c'était nous mais non il n'a jamais vraiment bien marcher il est supposée être encore sur la garantie d'un an du consommateur. J'aimerais en recevoir un nouveau ou être crédité (rembourser) Je suis très déçues. Courriel doyonjoanne@ gmail.com
Dennis M
Reviewed in the United States on May 16, 2022
We purchased this controller to connect to 6 solar panels (roughly 2kw). Read very careful the product description. It only does what it says it will do and nothing more. For the beginner it will appear to be a good charge controller, and we almost bought more of them. Trial of the product revealed it is not as good as indicated.Pros:Does support 12v and 24v systems.Maximum input of 2600W is correct.Appears to have adequate protection for polarity, overload, etc. (did not test)Handles load well, does not get very hotDisplay is readable at eye level and backlit.Has usb ports for charging usb items. (likely never use)CONS: Lot of them!The display on a 24v system shows 12v information. (have to X2 to know readings)Came with temp sensor extension, however no temp sensor for battery.Has a RS485 comm port, but only works for external display that is not availableVery limited documentation for setup and programming was provided.Tech Support sent a PDF with additional information, then told me information was wrong.DOES NOT properly Equalize (if at all, cant get it to work) Lead Acid Batteries.Claims to Equalize and Boost charge on the 25th of the month, yet no date and time in the unit.Tech support was uneducated in their own manual. In a conversation about equalization with Ooycyoo they sent me 2 PDF documents. In the second document on page 6 section (b) it clearly states under equalization and boost charging "boost charging is start at 25th of each month" When I questioned this statement they responded saying "the manual does not indicate that the controller is charged balanced on the 25th of each month." bit odd. For new people to the solar market, Equalizing a FLA battery is important. It helps remove sulfides and prolongs the life of the battery. Its not something you do monthly (much less on the 25th) but you do need to do 2-3 times a year (pending your battery setup, usage, etc.) It can make a big difference in the Specific Gravity of the batteries, acid stratification, as well as their performance. My other charge controller (20.00 less than this one) allows me to enter the voltage, duration, and frequency of the EQ charge. No such settings exist on this unit.
Juande
Reviewed in Mexico on May 20, 2021
Falso lo que te anunciaNo cumpleNo es 100 amp
Raul Ernesto Canto Castan
Reviewed in Mexico on December 1, 2021
buen dia, ya lo probé y funciona perfecto pero yo compre una inversor que decía ser de 100a pero me voy revisando y el modelo que me enviaron es k20pro eso dice la etiqueta los cual es de 20a según deduzco el instructivo no especifica el modelo k20pro esta pegado en etiqueta en el regulador por lo cual la discriccion de compra me dice que es de 100a y me enviaron uno de 20a
Alona W.
Reviewed in the United States on October 5, 2021
Worked really well forc10 months. I checked my sealed led acid batteries, I have 4 6 volt deep cycle batteries wired to be 1 24 volt battery. I have 2 on reserve, charging in case of failure. These batteries were added to my system at the same time as the controller. I checked the system with my voltmeter randomly throughout the 10 months. Prior to this I had 4 led acid deep cycle 6 volts. Tgey also were stiill in good shape but not running on my system. About 2 months ago I noticed my intake from my panels reduced by half at the charge controller. I checked the output to the batteries and it was producing half the input. Two of the vatteries were showing a 3 volt charge only. I immediately removed these two and swapped out the fully charged reserve 2. I tgen placed the lower charged 3 volt batteries on the smaller system. The next 2 months I checked tge syestem 3- 4 times a day and ststedy watched thus cintroller destroy the 400.00 a piece batteries. By the time I gave up, the controller was registering my 24 volt battery bank as a 12 volt bank. A knowledgable friend who reccomended this controllertolf me I had faulty batteries. I knew this was untrue because the two I swapped out were currently at full capacity again. I dismantled the 24 volt bank and added all batteries in series/parallel to tge smaller 12v system that I use for stand by. All four batteries are back to full charge. I'd love to get tech. on all this but a significant current drop from the input of a conponent to the out put of that component. Common sense says it's a failure with that conponent. Not the prior conponent or the one after that conponent. Btw: my cheap matanence charge controller was 29.99, cheap 100amp mppt knok off. So getting what I pay fir in this situation is not the case. Crap is crap.
uppitykatt
Reviewed in the United States on January 14, 2021
This MPPT controller is simply dangerous. Have now had two of these, both smoked and burned after a few days of operation. I have a decent sized solar array, but not huge. I have substantial battery bank. Each part of my array feeds its own MPPT controller and has its own pure sine wave inverter. This MPPT controller was tied to 1,100 watts of solar, at 72 volts. This is 35+ volts and 200 watts below the maximum allowed by the unit. Controller feeds two, 100 ah, 12 volt SLA batteries, 6 months old. The batteries then run a 2,500 watt pure sine wave inverter. Actual inverter draw never goes above 700 watts. Oh, and I am a retired, Master electrician and controls expert.The first OOYCYOO controller lasted less than 5 days. Luckily I was in the basement when I smelled the smoke and got the system shut down. I was ticked, but not completely, I figure anything can have a problem. Unit was replaced quickly. I installed the replacement unit and everything seemed fine. Was nowhere near it's design limits.This time, the replacement unit ran for a bit over two weeks. I was upstairs when my smoke alarm for the solar system went off. I ran downstairs and the unit was smoking like crazy. Once again, shut it all down and pulled the unit.I'm sorry, but one failure I can understand. 0 for 2? Same problem? No way, something is wrong with these systems. Oh and I have 3 other systems, using other MPPT controllers and they have been running for months without a problem. Give me my money back and I'll go back to my Victrons and Rich Solar MPPT controllers. Not worth burning down my house to save a few bucks. I am sorry I even tried the OOYCYOO 100 amp unit.
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