PowMr POW-LVM4K-ECO

Last updated: October 24, 2026

PowMr POW-LVM4K-ECO
3.4/5#1 of 17 in 120 V hybrid inverters
3.4

For a small 120 V cabin, shed or van system on a 24 V battery at the lowest price. Buyers who want published efficiency and a UL listing should spend more.

  • 4 kWOutput
  • 24 VBattery
  • 5,000 WSolar input
  • 1 yearWarranty
Check price at AmazonCheck price at PowMr$289

Price checked October 23, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Very low price for a 4 kW all-in-one
  • Takes up to 500 V of panels, so long strings keep wiring light on a 24 V system
  • Runs loads from solar with no battery connected
Cons
  • PowMr publishes almost no efficiency, idle or surge figures
  • Can’t run in parallel, so it can’t grow or make 240 V
  • Wi-Fi monitoring is an add-on module

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its output. How we rank explains each one.

Specifications

Model numberPOW-LVM4K-ECO
Output
Output voltage120 V single-phase
Continuous output4,000 W
Parallel unitsNo
Solar
Max PV power5,000 W
Max PV voltage (Voc)500 V
MPPT range60 to 450 V
Runs without batteryYes
Battery and grid
Battery voltage24 V
Battery typesLithium, lead-acid, user-defined
AC charge current100 A
Grid sell-backNo
UL 1741No
Build
App monitoringOptional add-on
Warranty1 year

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