Go Power! GP-ISW1500

Last updated: October 24, 2026

Go Power! GP-ISW1500
2.3/5#35 of 38 in 1,100 to 2,000 W 12V inverters
2.3

For RVs that run a microwave or coffee maker. Same hardware as the Cotek SP-1500-112.

  • 1,500 WContinuous
  • 2,650 WSurge
  • 1.8 AIdle draw
  • NoUL listed
  • 2 yearsWarranty
Check price at Amazon$535

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

Pros
  • Runs a microwave or coffee maker
  • Under 0.1 A in powersave mode
  • GFCI outlets built in
Cons
  • No UL 458 listing by a named lab
  • Two-year warranty

The Go Power! GP-ISW family

Every Go Power! GP-ISW model we rank, smallest first. Ratings compare each against its own size.

ModelContinuousRatingPrice
Go Power! GP-ISW700700 W2.1/5$355.99
Go Power! GP-ISW10001,000 W2.5/5$367.90
Go Power! GP-ISW1500 (this one)1,500 W2.3/5$535
Go Power! GP-ISW20002,000 W2.2/5$759.99
Go Power! GP-ISW30003,000 W2.0/5$1,128.95

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.

Specifications

Model numberGP-ISW1500-12
Output
TypePure sine wave inverter
Continuous power1,500 W
Surge power2,650 W
DC input range10.5 to 16.5 V
Idle draw1.8 A (21.6 W)
Power-saving draw0.1 A
Peak efficiency91%
Connections
AC outlets2
GFCI outletsYes
Hardwire terminalNo
USB portsNone
Transfer switchNo
Parallel unitsNo
Control and build
RemoteOptional extra
AppNo
DisplayNo
Safety listingNo
Coolingload-controlled fan
Dimensions421 x 248 x 83 mm (16.59 x 9.76 x 3.27 in)
Weight9.1 lb
Warranty2 years

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