Editor's Note, 10 October 2026: New review, from the field notes of Ryan Williams and John Pulham.
The lightest inverter here at about 25 lb, for charging cameras, drones and laptops on a budget. It scores 80 out of 100 and ranks #10 in our best inverter generators guide as our best budget micro inverter.
Best Budget Micro Inverter
GENMAX GM1200i
- Output: 1,200 W peak, 1,000 W running
- Our noise reading: about 52 dBA at 25% load
- Our runtime: 6.5 hr at 50% on 0.7 gal
- Weight: 25.3 lb (GENMAX)
Bottom Line : The lightest inverter here at about 25 lb, for charging cameras, drones and laptops on a budget.
Pros
- About 25 lb
- Clean power for camera and drone batteries
- 6.5 hours at half load
Cons
- Messy small oil fill plug
- Small tank needs frequent refills under load
In the Field
Our testers used the GENMAX GM1200i at a backpacking base camp, for a field camera setup and on a kayak camping trip. It ran a drone battery multi-charger, a laptop, camera gear, lanterns and a heating pad.
It read about 52 dBA at a quarter load and ran 6.5 hours at half load on 0.7 gallons, and its clean sine wave charged camera, drone and phone batteries without trouble.
At about 25 lb with a molded top handle, it is the easiest generator in our inverter guide to carry.
Where It Asks Something of You
The small oil fill plug is messy to service, and the small tank needs refilling often under heavy draw. We tested it as a single unit, not in parallel.
Spec Sheet vs Our Test
At only 25.3 pounds. GENMAX lists 25.3 lb, the lightest inverter in our guide, and it carried like it.
As low as 58 dBA at 25% load. GENMAX quotes 58 dBA at a quarter load; our testers logged about 52 dBA. Either way, it is quiet enough for a campsite.
Up to 6.5 hours at 50% load. GENMAX quotes 6.5 hours at half load on 0.66 gallons, and that is what we got.
Should You Buy the GENMAX GM1200i?
Buy it if you need a light, cheap way to charge cameras, drones and laptops in camp.
Skip it if silence and the cleanest power matter: the Honda EU1000i is quieter and the benchmark for sensitive gear. For appliances, a 2,000 W class unit like the WEN 56225i.
Compare With
- Honda EU2200i: our best inverter generator overall.
- Champion 2500-Watt Ultralight: our lightest 2,000 w-class inverter.
- Honda EU3000iS: our best 3,000 w inverter with electric start.
- WEN 56225i: our best budget inverter generator.
- Westinghouse iGen2550: our best mid-size value.
- WEN 56235i: our quietest for the money.
- Pulsar PGD40ISCO 4000W: our best high-output inverter.
- Honda EU1000i: our best 1,000 w inverter.
- Yamaha EF2200iS: our best inverter for RVs (built-in 30 amp outlet).
See all ten, and how we tested them, in our best inverter generators guide. For every type of generator, start at our best generators guide.
Our Testers
This review was edited by Sean Williams and tested by our lead tester, Ryan Williams, and John Pulham.
- Sean Williams, Editor-in-Chief. Sean built the team of researchers and testers behind our reviews and edits every guide. His rule: we say what we actually found.
- Ryan Williams, Lead Tester. Ryan leads our field tests and our generator and solar testing.
- John Pulham, Tester. John tests our generators alongside Ryan; his own Honda EU2000i is on year 8.
