HHO & DC Motor
Controllers
Built for Power.

From compact EV builds to heavy industrial drives — find the exact controller for your voltage, current, and application. Engineered for reliability, backed by real support.

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900+
Verified reviews
10V – 400V
Voltage range
30A – 400A
Current range
Fast EU Shipping & Worldwide
2-Year Warranty
30-Day Returns
Expert Technical Support
Secure Payments
Product Range

Find Your Controller

Three families, built for different power levels and applications. All feature our proven Crocodile platform.

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HL Series

Compact, high-efficiency single-direction controllers. Perfect for EV builds, scooters, forklifts, and boats where space is tight and reliability is critical.
Explore HL Series →
Non-Reversible
FRD Series

Full forward/reverse operation for demanding industrial and mobility applications. High current capacity with advanced protection circuitry.
Explore HL Series →
Reversible
FRX / HLXH Series

Industrial-grade high-power controllers for heavy machinery, large EVs, and three-phase drive systems. Maximum current with full protection suites.
Explore HL Series →
Non-Reversible
Simple Setup

Up and Running in Minutes

All Crocodile controllers come with full documentation and wiring diagrams. No special tools needed.

Choose Your Model

Match voltage, current, and direction (reversible vs non-reversible) to your motor and application. .
Step 1
Select Version

Board only, with heatsink, or in an aluminium enclosure — pick what fits your installation. .
Step 2
Wire Using the Diagram

Every order includes a PDF wiring diagram. Follow it step by step — typically under 30 minutes. .
Step 3
Run Your Motor

Plug in, adjust the current limit potentiometer, and you're ready. Need serial control? The full datasheet covers every parameter. .
Step 4
Volume Pricing

MORE YOU BUY,
MORE YOU SAVE

All CROCODILE controllers come with automatic quantity discounts — no coupon needed.

1 unit
LIST Standard price
2-4 unit
~5% Automatic discount
1 unit
~10% Auto applied
10+ unit
>10% Auto applied
For Resellers
Why Power Sol.

The Crocodile Difference

Proven & Trusted

800+ verified customer reviews averaging 4.9 stars. Used in EVs, forklifts, boats, and industrial machinery across 40+ countries.
Ships from EU — Fast

European warehouse means 2–5 day delivery for most EU countries. No customs delays, no surprise import fees.

Full Documentation

Every product comes with a wiring diagram and complete datasheet. Serial protocol fully documented. No guessing, no black boxes.

Smart Protection

Adjustable current limiting, thermal protection, and overcurrent shutdown protect both your motor and controller from damage.
Universal Compatibility

Works with potentiometers, hall throttles, PWM signals, RC receivers, PLCs, Arduino, and Raspberry Pi out of the box.

Real Human Support

Technical questions answered by engineers, not bots. Pre-sales and post-sales support with actual knowledge of the products.

Product Range

What Builders Say

4.8
Based on 39 reviews
5 star
85
85%
4 star
15
15%
3 star
0%
2 star
0%
1 star
0%

Customer Images

Image #1 from Markus K.
Image #1 from Markus K.

Markus K.

Used this in an electric cargo bike conversion. The regenerative braking is noticeable and really extends range on long descents. Serial control worked perfectly with my Arduino.

Image #1 from Markus K.
1-5 of 39 reviews
  1. Milan D. NL
    Reviewer
    Crocodile HL100100 [100V, 200A ver]Crocodile HL100100 [100V, 200A ver]

    Excellent service

  2. Harry W. GB
    Reviewer
    Crocodile FR50200 [50V, 300A]Crocodile FR50200 [50V, 300A]

    Arrived, thanks and have a nice dayAndrea

  3. Caleb J. US
    Reviewer
    HHO PWM 55A LEDHHO PWM 55A LED

    As described. Speed controller.

  4. Hunter S. US
    Reviewer
    Crocodile FR10050 [200V, 45A]Crocodile FR10050 [200V, 45A]

    Ottimo venditore

  5. Lorenzo F. IT
    Reviewer
    Crocodile FRX40200 [30V, 200A]Crocodile FRX40200 [30V, 200A]

    Ottimo venditore 10+

Markus K.
Markus K.
☆☆☆☆☆
4 years ago
Used this in an electric cargo bike conversion. The regenerative braking is noticeable and really extends range on long descents. Serial control worked perfectly with my Arduino.
Markus KJean-Pierre L.
☆☆☆☆☆
France · ✓ Verified purchase
Ordered the Alu Box version for my boat thruster. Arrived in 3 days, wiring diagram is crystal clear. Had it running in under an hour. Completely silent at all speeds.
Andrei T.
☆☆☆☆☆
Romania · ✓ Verified purchase
Fourth controller I've bought from Power Sol. Never a single failure. The current limiting saved my motor when I accidentally overloaded it — the controller just throttled back.
Juan Antonio A.
☆☆☆☆☆
Argentina · ✓ Verified purchase
Artículo bien envuelto y protegido. Buena calidad y buen funcionamiento. Entrega rápida
K. Eliáš
☆☆☆☆☆
Slovakia · ✓ Verified purchase
Good coms, good service, got what I paid for, Now to wire it with HHO CELL
J. Rüdiger
☆☆☆☆☆
Germany · ✓ Verified purchase
Super Ware, guter Kontakt, schneller Versand, gerne wieder, besten Dank
Raymund Harding
☆☆☆☆☆
Australia · ✓ Verified purchase
Excellent controller with complete documentation and quality manufacture at reasonable price. I am very happy with my decision to buy from seller and would not hesitate to order other items. Shipping delay due to unavailable item (upgraded to 100A at no cost) is understandable but delay was inconvenient as machine was sidelined.
Cyan Knox
☆☆☆☆☆
Canada · ✓ Verified purchase
Excellent communications, excellent product. Shipping fast considering location. Good instructions with on line PDF file.
Joss Macauley
☆☆☆☆☆
United States · ✓ Verified purchase
If you need to control a DC motor BUY THIS! not China! I have an old Minn Kota trolling motor that needed a new controller - I tried 2 cheap Chinese PWM stated 60A &100A, both blew the pcb tracks on the relays. This does not have relays, switches digitally and has so many features that my motor is now better than the latest flagship, it’s that good. Worth every Penny I feel lucky that someone has made a quality solution 10/10.
Maxwell Duane
☆☆☆☆☆
United States · ✓ Verified purchase
Sooo much better than the china crap i have tried before. Thankyou!
Alessio Lamberto
☆☆☆☆☆
Italy · ✓ Verified purchase
Esc molto performante, fattura ottima, ha molte funzioni , bisogna studiare un pò sul suo datasheet per il settaggio perfetto su riceventi rc , dovrò acquistare il suo dissipatore per un raffreddamento adeguato. Comunque venditore eccellente !!! AAAAA+++++
John Beatty
☆☆☆☆☆
South Africa · ✓ Verified purchase
Hello guys from john beatty hydrogen health i have told many other builders about your great products 55 amp in box main item . my business counts on this part ed wonders of hydro genie tells me it no longer available is this true have 2 other co.s ready to order love your work and am doing a press release l plan on ordering many many and will get you lots orders from other builders just keep the unit in stock thanks
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Your Motor.Your Power.

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