Name: Magnum Energy MMS1012
Brand: Magnum Energy
Price: 1192.00 USD

For smaller RVs and trucks that want a rugged, listed 1,000 W inverter-charger and don’t mind paying for it.

Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Cons

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Value $1.19 per continuous watt0
Idle draw 1.6 A idle (about 19 W) with nothing plugged in70
Safety listing ETL listed to UL 458 & UL 1741, CSA C22.2 #107.1; meets KKK-A-1822E100
Warranty 3-year warranty50
Features optional remote, app add-on, lithium charge profile, hardwire terminal65
Efficiency 87% peak efficiency (maker rating)22

Specifications

Output
Model number	MMS1012
Type	Pure sine wave inverter-charger
Continuous power	1,000 W
Surge power	1,750 W for 5 s
DC input range	9 to 17 V
Idle draw	1.6 A (19 W)
Power-saving draw	0.4 A
Peak efficiency	87%
Connections
AC outlets	0
GFCI outlets	No
Hardwire terminal	Yes
USB ports	None
Transfer switch	Yes
Charger	50 A
Lithium charge profile	Yes
Parallel units	No
Control and build
Remote	Optional extra
App	Optional add-on
Display	No
Safety listing	ETL listed to UL 458 & UL 1741, CSA C22.2 #107.1; meets KKK-A-1822E
Cooling	fan
Dimensions	16.6 x 8.4 x 4.7 in (42 x 21 x 12 cm)
Weight	23 lb
Warranty	3 years

For full-time RVers who want a rugged low-frequency inverter-charger that will start air conditioners and charge fast from a generator.

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