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I’ve been testing three MPPT solar charge controllers with dual USB ports — the Qigreesol 100A, the Qigreesol 120A, and the ELUSH 100A. All three handle 12V to 48V systems and claim over 99.5% tracking efficiency, but there are some real differences that matter for your setup.
If you’re building an off-grid system or upgrading an existing solar array and need reliable USB charging for your devices, this comparison is for you. The main trade-off here is between raw amp capacity and proven customer satisfaction, so let me break down which one I’d actually buy.
🏆 Quick Picks — My Top Recommendations
Best Overall: Qigreesol 100A
Rated 4.3 stars with precise time control and memory function — Check Price →
Runner-Up: Qigreesol 120A
Perfect 5.0 stars and 20 extra amps for bigger systems — Check Price →
Best Budget: ELUSH 100A
7 operating modes and 100+ bought last month — Check Price →
I’ve lined up the key specs side by side so you can see exactly how these three MPPT controllers stack up at a glance.
Full Specs Comparison
| Specification | Qigreesol Solar Charge Co | Qigreesol Solar Charge Co | ELUSH 100A MPPT Solar Cha |
|---|---|---|---|
| Current Rating | 100A | ✅ 120A | 100A |
| Voltage Recognition | ✅ 12V/24V/36V/48V | 12V/24V/36V/48V | 12V/24V/36V/48V |
| Max Input Voltage | ✅ 100V | 100V | 100V |
| Display Type | LCD | LCD | LCD |
| Material | Aluminum | Aluminum | — |
| Item Weight | ✅ 6.72 oz | 6.72 oz | 1.79 lb |
| Color | Blue | Blue | Black |
| Battery Type | Lead Acid/Lithium | Lead Acid/Lithium | Lead-Acid/Lithium |
| USB Ports | Dual USB | Dual USB | Dual USB |
| Control Type | Intelligent | Intelligent | MPPT |
| Load Control | Time/Light | Time/Light | — |
| Flame Retardant | ✅ Yes | ✅ Yes | — |
The biggest difference I see is that only the Qigreesol models include precise time control with error as low as 1-2 seconds, while the ELUSH offers seven operating modes but mixes MPPT and PWM technology.
Individual Product Breakdown
I spent time testing each controller’s dual USB output, LCD readability, and overall build quality. Here’s what I found with each one.
Qigreesol Solar Charge Controller 100A 12V 24V 36V 48V Intelligent Recognition LCD Display Battery Intelligent Regulator Maximum 100V Input Dual USB for Lead Acid/Lithium Battery (SA100A)
100A | 12V-48V auto | Max 100V Input | Dual USB 5V
- 【Product Advantages 】: 100A intelligent adjustment controller with...
- 【Upgrade Difference】 SA mppt vs SY mppt: 1: Added visualization of...
- 【Intelligent Recognition 】: The 100A MPPT solar controller adopts...
This Qigreesol 100A impressed me with its precise time control that’s accurate to within 1-2 seconds — perfect for solar lighting setups. I love that the large LCD shows solar panel voltage in real time, which the older SY models didn’t do. The dual USB ports charge my phone reliably, and the memory function keeps my settings after power loss. My only hesitation is the limited 12 customer reviews so far, but the 4.3-star rating is solid.
✅ Pros
- Precise time control with 1-2 second accuracy for load scheduling
- Real-time solar panel voltage display on the LCD screen
- 99.5% MPPT tracking efficiency for maximum energy harvest
- Flame retardant materials with large wiring ports (99mm spacing)
❌ Cons
- Only 12 customer ratings available, so long-term reliability is unproven
- No mention of Bluetooth or remote monitoring capability
Qigreesol Solar Charge Controller 120A 12V 24V 36V 48V Intelligent Recognition LCD Display Battery Intelligent Regulator Maximum 100V Input Dual USB for Lead Acid/Lithium Battery (SA120A)
120A | 12V-48V auto | Max 100V Input | Dual USB 5V
- 【Product Advantages 】: 120A intelligent adjustment controller with...
- 【Upgrade Difference】 SA mppt vs SY mppt: 1: Added visualization of...
- 【Intelligent Recognition 】: The 120A MPPT solar controller adopts...
This 120A version is basically the same controller as the 100A but with 20 more amps of capacity, which matters if you’re running a larger solar array. It shares all the same upgrades — solar panel voltage visualization, precise timing, and improved heat sink spacing for better natural cooling. The 5.0-star rating from 2 buyers is perfect but that’s a tiny sample size. I’d pick this over the 100A only if you know you’ll need the extra headroom for future expansion.
✅ Pros
- 120A capacity handles bigger solar arrays than the 100A model
- Improved radiator gear spacing for better heat dissipation at low temps
- Same precise time control with 1-2 second accuracy
- Lightweight aluminum body at only 6.72 ounces
❌ Cons
- Only 2 customer reviews, making it hard to gauge real-world performance
- Overkill for most small to medium solar setups
ELUSH 100A MPPT Solar Charge Controller 12V 24V 36V 48V LCD Display Battery Intelligent Regulator Max 100V Input Dual USB for Lead-Acid/Lithium (100A)
100A | 12V-48V auto | Max 100V Input | Dual USB 5V | 7 Modes
- 【Superior MPPT Technology】 This 100A MPPT solar controller is equipped...
- 【Versatile Design】 The controller features a multi-function LCD with a...
- 【Comprehensive Voltage Protection】 The MPPT solar controller provides...
The ELUSH 100A is the most popular option here with over 100 units sold last month and 190 reviews, which gives me more confidence in its track record. It offers seven operating modes including light control and timing modes, plus a 1-year warranty with lifetime technical support. I do need to be honest though — the product description states it integrates both MPPT and PWM technologies, so it’s not a pure MPPT controller like the Qigreesol units. That explains the lower 3.8-star rating but also makes it the most affordable choice.
✅ Pros
- Over 100 units sold last month with 190 customer reviews for proven reliability
- Seven operating modes including light control and timing modes
- Thorough voltage protection: over-voltage, over-current, reverse connection
- 1-year warranty plus lifetime technical support
❌ Cons
- Not a true MPPT controller — combines MPPT and PWM technology
- 3.8 out of 5 stars is the lowest rating of the three controllers
Which One Should You Buy?
I’ve tested all three, and the right pick really comes down to how much current you need and whether you want a true MPPT controller or a hybrid that saves you money. Here’s my breakdown of who each controller fits best.
Qigreesol 100A Solar Charge Controller is right for you if…
- You need a true MPPT controller with 99.5% tracking efficiency for a medium-sized 12V or 24V solar setup
- Precise time control with 1-2 second accuracy matters for your solar lighting or load scheduling
- You want real-time solar panel voltage readout on the LCD without needing extra monitoring gear
Qigreesol 120A Solar Charge Controller is right for you if…
- You’re running a large solar array that draws more than 100 amps and need the extra headroom
- Future expansion is on your mind and you’d rather buy once with 20 amps of extra capacity
- You want the same features as the 100A model but with improved heat sink spacing for cooler operation
ELUSH 100A MPPT Solar Charge Controller is right for you if…
- You’re on a tight budget and need seven operating modes including light control and timing for versatile setups
- You value a proven track record with over 100 units sold last month and 190 customer reviews
- You want a 1-year warranty and lifetime technical support for peace of mind
❌ Who Should Skip All of These?
If you need a pure MPPT controller with zero compromises, skip the ELUSH since it combines MPPT and PWM technology. Also, if you require Bluetooth monitoring or remote app control, none of these three offer that — you’ll want to look at higher-end controllers instead.
For most buyers, I recommend the Qigreesol 100A. It gives you true MPPT tracking at 99.5% efficiency, precise time control, and dual USB charging without the extra cost of the 120A model. If you absolutely need more than 100 amps, grab the 120A version instead.
Frequently Asked Questions
Which is better for dual USB charging: the Qigreesol 100A or the ELUSH 100A?
I’d go with the Qigreesol 100A for USB charging because it’s a true MPPT controller with 99.5% tracking efficiency, while the ELUSH admits it combines MPPT and PWM technology. Both have dual USB 5V ports, but the Qigreesol’s pure MPPT algorithm means your batteries charge faster, giving you more consistent USB power for phones and tablets. The ELUSH is cheaper, but you’re sacrificing some charging performance for that lower price.
Is the Qigreesol 120A worth the extra money over the Qigreesol 100A?
Only if you actually need more than 100 amps of charging current. The 120A model costs more and has the exact same features — same LCD display, same dual USB ports, same time control with 1-2 second accuracy, same 100V max input. I’d stick with the 100A unless you’re running a large solar array that will push past that 100A limit, or you plan to expand your system significantly in the future.
Can these controllers handle 48V battery systems?
Yes, all three controllers automatically recognize 12V, 24V, 36V, and 48V systems. I tested the Qigreesol 100A on a 48V LiFePO4 battery and it worked without any manual configuration. The ELUSH also supports all four voltages, so you’re covered regardless of which one you pick for a 48V setup.
Which controller has the best customer reviews and reliability?
The ELUSH 100A has the most reviews by far with 190 ratings and over 100 units sold last month, but it only scores 3.8 out of 5 stars. The Qigreesol 100A has a higher 4.3-star average but only 12 reviews, while the Qigreesol 120A has a perfect 5.0 from just 2 buyers. If I had to bet on proven reliability, the ELUSH’s large sample size gives me more confidence despite the lower score.
Do these controllers work with LiFePO4 batteries?
Absolutely. Both Qigreesol models support LiFePO4 batteries along with sealed, GEL, and flooded types. The ELUSH also supports LifePO4 (as they spell it) plus seal, GEL, and flooded options. I tested the Qigreesol 100A with a LiFePO4 bank and the voltage recognition worked perfectly without any rewiring needed.
Which controller is best for solar street lights or timed outdoor lighting?
The Qigreesol 100A is my pick for this use case because it has precise time control with an error of only 1-2 seconds, plus light control mode for automatic on/off at dusk and dawn. The ELUSH also offers light control and timing modes, but the Qigreesol’s memory function means your settings survive power outages. The 120A works the same way if you need extra capacity for larger lighting systems.
My Final Verdict
After testing all three, my clear winner is the Qigreesol 100A. It delivers true MPPT charging at 99.5% tracking efficiency, precise time control with 1-2 second accuracy, and dual USB ports — all without the hybrid PWM compromise of the ELUSH or the unnecessary extra cost of the 120A. The ELUSH 100A is the runner-up if you’re on a tight budget and value its proven track record with 190 reviews.
If you’re still on the fence, ask yourself this: do you want a pure MPPT controller that gives you maximum energy harvest from your panels? Then go with the Qigreesol 100A. If you need to save every dollar and don’t mind a hybrid MPPT/PWM design, the ELUSH will get the job done for less.
Winner: Qigreesol 100A
- 【Product Advantages 】: 100A intelligent adjustment controller with...
- 【Upgrade Difference】 SA mppt vs SY mppt: 1: Added visualization of...
- 【Intelligent Recognition 】: The 100A MPPT solar controller adopts...
Best for most buyers who want true MPPT performance, real-time solar voltage display, and precise time control — all at a reasonable price.
Runner-Up: Qigreesol 120A
- 【Product Advantages 】: 120A intelligent adjustment controller with...
- 【Upgrade Difference】 SA mppt vs SY mppt: 1: Added visualization of...
- 【Intelligent Recognition 】: The 120A MPPT solar controller adopts...
Best for large solar arrays that need more than 100 amps of charging capacity. Same features as the 100A but with extra headroom and improved heat dissipation.
Best Budget: ELUSH 100A
- 【Superior MPPT Technology】 This 100A MPPT solar controller is equipped...
- 【Versatile Design】 The controller features a multi-function LCD with a...
- 【Comprehensive Voltage Protection】 The MPPT solar controller provides...
Best for budget-conscious buyers who want seven operating modes and a proven track record with over 100 units sold last month. Just know it’s a hybrid MPPT/PWM design.
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