GENMAX GM4000iSBEPC Inverter Generator vs Champion 4000W Dual Fuel Inverter

Buy the GENMAX GM4000iSBEPC if you want push-button starting, more running watts on gas and a path to 240V by pairing two units. Buy the Champion 201050 if you want dual-fuel flexibility, long runtime and a lighter, simpler machine. The GENMAX runs 3200W continuous versus 3000W for the Champion on gas, and it starts with a button plus recoil; the Champion is recoil-only. Both have CO shutoff and inverter output under 3% THD, so sensitive electronics are safe on either. Owners of the Champion praise the propane runtime and easy EZ Start dial; GENMAX buyers value the electric start and LCD control panel, though its small stock tank and short gas runtime draw complaints.

• Choose the GENMAX GM4000iSBEPC if you want electric push-button start, 3200W continuous output, and the option to series-connect two units for 240V.
• Choose the Champion 201050 if you want to run on propane as well as gas, need long runtime for camping or RV use, and prefer a lighter, simpler generator.