Gorilla Power 3500W Inverter Suitcase Generator - GP3500i – Powerful & Fuel Efficient

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£415.83 GBP £498.99 GBP ex VAT inc VAT

£415.83 GBP £498.99 GBP ~~£0.00 GBP £0.00 GBP~~ ex VAT inc VAT

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About this product

Gorilla Power GP3500i — 3500W Inverter Suitcase Generator

Compact muscle, clean power. With 3500W max / 3000W running and true sine-wave output, GP3500i is ideal for home backup, site tools, and sensitive electronics. Up to 14 hours runtime at ¼ load from a 6 L tank, and a low ~63 dB sound profile at 7 m.

Where This Model Sits in the Gorilla Power Range

From ultra-portable inverters to large dual-fuel & diesel sets — this GP3500i is a mid-portable inverter with higher headroom.

2.0kW Inverter — GP2000i 3.5kW Inverter — GP3500i 3.8kW Inverter ES — GP3800i 5.0kW Inverter — GP5000i 5.5kW Dual-Fuel — GP5500DF 6.5kW Dual-Fuel — GP6500DF 8.0kW Petrol — GP8000 8.3kW Dual-Fuel — GP8300DF 12.8kW Diesel — GP12800D
2.0kW 3.5 3.8 5.0 5.5 6.5 8.0 8.3 12.8kW

Key Features

3500W max / 3000W running — more headroom for tools & appliances.
True sine-wave inverter — safe for laptops, TVs & sensitive kit.
Fuel efficient — up to 14 hours at ¼ load (6 L tank).
Quiet operation — ~63 dB @ 7 m.
Manual recoil start, parallel-ready, low-oil protection.

Camping Home Essentials Tools High-Demand

Great for fridges, microwaves, heaters (1–1.5 kW), welders/hand tools (check start surges).

Sockets & Inputs — Front Panel at a Glance

2 × 240V AC (UK 3-pin)
Standard UK outlets for appliances & tools. USB charging + 12V DC (5A)
Charge devices; panel includes 12V auxiliary output. DC 5V Auto Auxiliary Outlet
Dedicated 5 V round port for low-voltage accessories. Parallel ports
Link two GP3500i units for extra wattage. Ground (earth) terminal
Added safety & compliance.

Running vs. Starting Watts — Know the Difference

Running watts = power to keep equipment operating. Starting watts = brief surge to start motors/compressors. Running watts (blue bar) Starting watts (red marker) Generator running capacity (dotted line) GP3500i: 3500W max / 3000W running Fridge-Freezer

0 3500W Run ≈ 180W | Start ≈ 1200W Microwave

0 3500W Run ≈ 1000W | Start ≈ 1000W Angle Grinder

0 3500W Run ≈ 800W | Start ≈ 1400W Circular Saw (7¼")

0 3500W Run ≈ 1500W | Start ≈ 2400W

Typical values — always check your device’s label. If your largest starting surge approaches 3500W, avoid running other heavy loads simultaneously.

What Size Generator Do I Need?

Item	Typical Running	Typical Starting	GP3500i?
Laptop + Phone Charging	100–200W	≈ Same	Easy
LED TV + Router + Lights	150–250W	≈ Same	Easy
Fridge-Freezer	120–200W	800–1200W	Yes
String Trimmer	300–350W	700–875W	Yes
Hedge Trimmer	400–450W	900–1200W	Yes
Drill	500–600W	800–900W	Yes
Hand Sander	500–600W	900–1200W	Yes
Paint Sprayer	500–600W	≈ 600W	Yes
Work Light (LED/Halogen)	300–1000W	≈ Same	Check total
Sump Pump (½ HP)	700–800W	1200–1300W	Yes
Microwave	800–1200W	≈ Same	Yes (solo heavy)
Small Heater (fan)	1000–1500W	≈ Same	Yes (watch total)
Pressure Washer (small electric)	1000–1200W	1800–2400W	Usually OK
Circular Saw (7¼")	1200–1800W	1800–2400W	Usually OK
Air Compressor (small)	1400–1600W	3500–4500W	Start can exceed
Water Heater (electric)	3000–4000W	≈ Same	Needs larger unit

Guide only — add up running watts for items used together, then ensure the single highest starting surge stays within generator limits.

Tips for Choosing the Right Generator

Total your running watts for everything you’ll use together.
Identify the largest starting surge and keep headroom.
Protect electronics — inverters (like GP3500i) output clean power.
Runtime matters — match tank size & Economy Mode to your day.
Scalability — parallel capability gives upgrade flexibility.

Reliable, Clean, Portable Power — Order your Gorilla Power GP3500i today.

Specifications

Maximum Watts	3500W
Running Watts	3000W
Fuel Type	Petrol
Runtime	Up to 14 hours (¼ load)
Noise (7 m)	Approx. 63 dB
Weight	21.5 kg
Fuel Tank	6 L
Oil Capacity	0.6 L
Starting System	Manual recoil
Frequency	50 Hz