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SELECTvia Shop Solar KitsUpdated 23hr ago

PLUS 7.92kW — EG4 FlexBoss18, 28.6kWh LiFePO4

Real build cost

$13,939

1 component role not included.

Best forRV / van life, weekend cabin, and shed / workshop
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Updated 2026-06-21Prices refreshed every 6hMethodology →

Solar

7920W

Storage

28.6kWh

Inverter

None

Cost / W

$1.76

Cost / Wh

$0.49

System voltage

48V

Battery chemistry

LiFePO4

What's included

71% complete
PanelsControllerBatteryInverterWiringMountingMonitor
Missing Components — Not Priced

This kit is missing 1 component that is not included in the advertised price:

Inverter

↓ Panel-bundled configurations available below

Other Configurations
PLUS 7.92kW — EG4 FlexBoss18, 20.48kWh LiFePO4
$13,199$-740
Panels7920W71%
PLUS 7.92kW — EG4 FlexBoss18, 20.48kWh LiFePO4
$13,489$-450
Panels7920W71%
PLUS 7.92kW — EG4 FlexBoss18, 28.6kWh LiFePO4Viewing
$13,939
Panels7920W71%
PLUS 7.92kW — EG4 FlexBoss18, 20.48kWh LiFePO4, + IronRidge
$15,589+$1,650
Panels7920W71%
PLUS 7.92kW — EG4 FlexBoss18, 20.48kWh LiFePO4, + SkyRack HD
$18,789+$4,850
Panels7920W71%

Evidence

Cohort-normalized
Cost verdict
—Advertised price ≈ real build cost
$13,939 advertised→$13,939 real
Completeness71%

Missing required parts:

Inverter
Use-case fit
Best for:RV / vanCabinShedEmergencyHomesteadBoat
vs 20 cohort peersLower = cheaper

60th percentile for $1.76/W

0th percentile for $0.49/Wh

Deal status65 datapoints
At or near tracked low
Install complexityModerate
48V wiring + breakersLicensed electrician
Alternatives in cohortSame system type, similar specs

Cheaper in cohort

CORE PRO 3.2kW — Rich Solar 6K, 10kWh LiFePO4

$5,989 real build cost

More complete

CORE PRO 3.2kW — Rich Solar 6K, 10kWh LiFePO4

86% complete vs 71%

Better $/W

EcoFlow OCEAN PRO - Hybrid Inverter + 10-80kWh Battery Modules

$0.24/W

Component breakdown

5 included · 1 missing
Inverter

Not included

—

1×

Price history

Price History

▼ 3% BELOW AVG
All-time low: $13,939Average: $14,331Current: $13,939High: $15,489

Last observed at retailer: Jun 21, 2026. Days between observations carry the most recent known price — not new data.

Where to buy

Where to Buy3 in stock
Shop Solar KitsBest
In stock
$13,939
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Shop Solar Kits
In stock
$15,689
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In stock
$19,339
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Price Drop Alert

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