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ArmiWatt

Sale price £99.00 Regular price £198.00
Up to 20W Manual Dynamo Electricity
6 Voltage Outputs: 3V, 5V, 6V, 9V, 12V, 15V
Dual USB Ports & DC Spring Terminals
Ventilated Heavy-Duty Steel Construction
Packets

Limited time offer

Enjoy exclusive savings today.

The Off-Grid Power Solution

Introducing ArmiWatt Hand Crank Generator

ArmiWatt provides immediate, self-reliant electricity through manual hand cranking. With 20W output, dual USB ports, spring terminals, and 6 voltage settings, it delivers complete peace of mind in any emergency.

Without ArmiWatt

  • Trapped in the dark with dead mobile phones when severe storms cut mains power
  • Solar panels sitting useless under thick British cloud cover and torrential rain
  • Power banks running completely flat after hours without electricity
  • No way to power 12V emergency gear, radios, or small DC electrical equipment

With ArmiWatt Generator

  • Instant 20W power generated on demand using the heavy-duty manual hand crank
  • Selectable 3V to 15V outputs to safely power USB gadgets and 12V DC equipment
  • Dual USB ports and spring terminals for universal device connectivity
  • Rugged ventilated steel chassis built for decades of reliable emergency use
100% Fuel-Free Power
Produce up to 20W of instant power whenever you need it, day or night, rain or shine
6 Voltage Outputs
Switch between 3V, 5V, 6V, 9V, 12V, and 15V for total electronics compatibility
Heavy-Duty Steel Casing
Tough ventilated steel housing and rubberised handle built to withstand tough conditions
Built for Absolute Power Independence

Why ArmiWatt Is the Ultimate Emergency Power Generator

Whether tackling winter blackouts across the UK, setting up off-grid campsite equipment, or preparing an emergency kit, ArmiWatt delivers reliable manual electricity on demand.

Pure Manual Power

20W Manual Dynamo Power Generation

Produce up to 20W of electricity on demand without fuel, sunlight, or mains electricity. Simply turn the crank to generate continuous power whenever you need it.

  • Delivers up to 20W peak manual power output
  • Operates 100% off-grid with zero reliance on sun or fuel
  • Smooth gearing mechanism for effortless rotational energy
Multi-Voltage Control

Six Selectable Voltage Settings (3V to 15V)

Switch seamlessly between six preset voltage modes to safely power everything from sensitive 3V electronics to demanding 12V and 15V DC equipment.

  • 6 selectable settings: 3V, 5V, 6V, 9V, 12V, and 15V
  • Clear rotary selector dial for rapid voltage adjustments
  • Protects connected electronics with stable voltage regulation
Dual Connectivity

Dual USB Ports & DC Spring-Clip Terminals

Equipped with dual 5V USB ports for emergency mobile phone charging alongside heavy-duty spring-clip terminals for direct DC wire hook-ups.

  • Dual USB ports for smartphones, radios, and GPS units
  • Spring-clip terminals for quick bare-wire DC device hook-up
  • Ideal for emergency survival gear, camping rigs, and DIY circuits
Rugged Durability

Steel Housing & Ergonomic Rubber Grip

Built to withstand rigorous outdoor demands. The ventilated steel casing protects internal mechanics while non-slip rubber feet maintain stability during cranking.

  • Robust ventilated steel case guards against impact and heat
  • Heavy-duty steel arm with comfortable rubber hand grip
  • Non-slip rubber base feet prevent slipping during operation
Manual Electricity

Emergency Power Generation in 3 Easy Steps

Generate emergency electricity and power essential equipment in three straightforward steps.

1

Select Voltage

Turn the voltage selector dial on the front panel to match your equipment (3V, 5V, 6V, 9V, 12V, or 15V).

2

Connect Your Devices

Plug your phone lead into either USB port or connect DC equipment leads directly to the spring-clip terminals.

3

Crank for Power

Grip the ergonomic rubber handle and turn smoothly at a steady pace to produce up to 20W of immediate electrical power.

Always Ready
instant 20W power generated with manual cranking
Performance Comparison

Why UK Households & Adventurers Choose ArmiWatt

See how ArmiWatt outperforms conventional power banks and weather-dependent solar chargers with up to 20W of instant manual electricity, 6 selectable voltage outputs, dual USB ports, and solid steel durability.

Scroll to compare
Off-Grid & Blackout Readiness
ArmiWatt Generator
Portable Solar Panels
Standard Power Banks
Power Generation Independence 100% manual dynamo power — generates up to 20W anytime without fuel, sun, or pre-charging Completely ineffective at night, during heavy UK rainstorms, or under thick cloud cover Completely useless once drained, offering zero off-grid self-generation capabilities
Voltage Versatility (3V – 15V) 6 selectable voltage settings (3V, 5V, 6V, 9V, 12V, 15V) plus dual USB and spring-clip terminals Fixed 5V USB output with fluctuating wattage dependent on sunlight intensity Strictly limited to 5V USB charging with no variable DC voltage controls for electronics
Dual USB Ports & DC Spring Terminals
All-Weather & Night-Time Operation
Heavy-Duty Ventilated Steel Body
Rugged Build & Longevity Delicate photovoltaic cells prone to scratching, cracking, and water damage
Long-Term Emergency Reliability Dependable emergency power source engineered to last for years of emergency and DIY use High cost per watt with unpredictable output during British winter weather Internal lithium cells degrade over time, losing capacity when stored in emergency cupboards
Up to 20W

Peak Manual Output

3V – 15V (6 Modes)

Voltage Settings

Approx. 0.95kg

Unit Weight

4.9 out of 5 based on 1,420+ verified UK preppers, campers, and prepared homeowners

Trusted by 8,500+ Households and Campers Across the UK

"We had a severe winter storm in Scotland that cut our mains electricity for over 14 hours. ArmiWatt was an absolute godsend. I set it to 5V and cranked it to revive our mobile phones, keeping us in touch with family. The steel build feels virtually indestructible. Every UK household should keep one in their cupboard."

J
James M.
Edinburgh, UK Verified UK Customer

"Took this on a wild camping trip in the Peak District. Because the British weather was overcast and rainy, our solar setup was practically dead. ArmiWatt saved our weekend by charging our GPS and headtorches via USB. The crank turns smoothly with no awkward jamming. Brilliant piece of engineering."

E
Emma W.
Manchester, UK Verified UK Customer

"As an electronics hobbyist and camper, the variable voltage feature is phenomenal. Being able to dial in 12V for direct DC bench testing and 5V for dual USB phone charging makes it ridiculously versatile. The rubber base feet keep it firmly planted on the workbench. Exceptional value for money."

D
David T.
Bristol, UK Verified UK Customer
4.9
1,420+ Verified UK Reviews
Emergency & Field Tested
Top Manual Generator 2026

30-Day Risk-Free Peace of Mind Guarantee

We are confident that ArmiWatt is the most dependable manual power generator for emergency readiness and off-grid use. Test it on your next outdoor expedition or keep it stored for winter storm blackouts. If you are not completely satisfied with its cranking efficiency, build quality, or power output, return it within 30 days for a full refund.

30-Day Money-Back Guarantee
Hassle-Free UK Returns
Heavy-Duty Steel Construction
Got Questions?

Frequently Asked Questions

Find answers below regarding ArmiWatt manual power generation, voltage settings, device charging, and UK delivery.

Never Be Caught Without Electricity in an Emergency

Equip your home, vehicle, and outdoor kit with the UK's most versatile manual emergency generator. Order today to claim our limited-time 50% promotional discount.

Order ArmiWatt — 50% OFF
Free UK Tracked Delivery
30-Day Money-Back Guarantee
4.9/5 UK Customer Rating