Is a $20 Fake MPPT Better Than a $10 PWM? (Surprising Results)

We know most cheap 'MPPT' controllers on AliExpress are actually fake. But is a $20 fake MPPT still better than a standard $10 PWM? I ran a full data analysis to see if the extra $10 buys you any extra power—or if it's a total waste of money. In this video, I test the efficiency of a generic AliExpress MPPT (which is likely just a rebranded PWM) against a standard PWM solar charge controller. If you are building a budget solar setup or a small off-grid system, watch this before you buy. Video Chapters: MPPT vs PWM 0:00 🧪 Intro: The $10 vs $20 Experiment 1:15 🛠️ Teardown: Inside the "Fake" MPPT 2:45 ⚙️ Test Setup (Panels & Battery) 4:30 📊 Data Analysis: Amps & Efficiency 6:10 🕵️‍♂️ The Truth: Is it just a PWM? 7:45 🏆 Final Verdict: Which one to buy? 📌 What’s Covered in This Video? ✅ MPPT vs PWM – Price, Efficiency & Performance Comparison ✅ Charging & Discharging Tests using an accurate Arduino-based sensor setup ✅ Live Data Logging with INA219 & real-time tracking using a DS1307 RTC module ✅ Custom Python Data Visualization for trend analysis ✅ Which solar charge controller handles battery charging more efficiently? ✅ Is the MPPT charge controller worth the extra cost? For this test, I simulated a solar power setup by using a fixed voltage charger instead of solar panels to ensure consistent input conditions for accurate results. Both controllers were tested with the same battery, same load, and same environment to compare charging cycles. 📊 Data Analysis & Key Takeaways: ⚡ MPPT Solar Charge Controller: More stable voltage & efficient power delivery ⚡ PWM Solar Charge Controller: More fluctuation & inconsistent charging ⚡ Battery Performance: Voltage drop & discharge behavior over time ⚡ Power Consumption: Measuring amp-hours & energy efficiency The MPPT controller handled load discharge much better compared to the PWM controller, making it a clear winner in maintaining stable power flow after the battery reached its threshold. Links: MPPT Solar Charge Controller: https://s.click.aliexpress.com/e/_omC... PWM Solar Charge Controller: https://s.click.aliexpress.com/e/_oBu... INA219 Sensor for Data Logging: https://s.click.aliexpress.com/e/_okz... SD Card Module for Data Storage: https://s.click.aliexpress.com/e/_oFf... 🔥 Final Verdict: If you're serious about solar energy, the MPPT solar charge controller is a much better choice for efficiency & battery longevity! ✅ Like & Subscribe for more solar power tests, Arduino projects, and renewable energy content! 🔔 Turn on notifications so you never miss an update! #MPPTvsPWM #SolarChargeController #MPPT #PWM #SolarEnergy #Arduino #BatteryCharging #RenewableEnergy