Goal Zero Boulder 100 Briefcase Portable Solar Panel

23rd of 25 we've scored in Portable Solar Panels

23rd of 25 in Portable Panels

Goal Zero Boulder 100 Briefcase Portable Solar Panel

100-149 W panel
2-year warranty

SVT Score, Lower

Usability1.9/10Social6.2/10The SVT Score is placed on its category's range

Versus

SVT SCORESRead review

Two 50 W tempered-glass panels hinged into a 100 W folding briefcase with a built-in kickstand and canvas bag, for charging Goal Zero Yeti stations at camp or a cabin.

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SKU: 32408 Category: Portable Solar Panels Brand: Goal Zero

Usability

1.9 out of 10

Capacity1100 W rated from two 50 W panels, on the 100 to 119 W rung for portable panels

Electrical: 21.5 V open circuit and 17.2 V at maximum power; the user guide gives 18 to 22 V
Port: blue 8 mm solar port, 14 to 21.5 V at up to 7 A, 100 W maximum

Better on capacityRenogy 400W Solar SuitcaseAt 400 W it sits on the top rung for a portable panel. $495.99Scores 10.0

Efficiency213.3 percent computed from 26.75 x 43.5 in, on the 12 to 13.9 percent rung

Size: the page's 70 x 110.4 cm does not match its 26.75 x 43.5 in; the inches score

Better on efficiencyJackery SolarSaga 500 X Bifacial Portable Solar PanelJackery markets 25 percent efficiency. $799Scores 8.0

Lifespan1No power-output warranty on the product page, warranty page or user guide

Better on lifespanRich Solar MEGA 200 Briefcase PanelRich Solar's spec sheet promises a 25-year output warranty. $399.99Scores 7.0

Features3Glass front, kickstand and carry bag; 8 mm plug, no MC4, IP or diode data

Build: tempered glass, aluminum frames with corner protection, two panels on one hinge
Chaining: 8 mm male and female leads; arrays over 150 W need a Goal Zero combiner cable
Weather: the user guide says Boulder panels are built to withstand the weather

Better on featuresEcoFlow NextGen 220W Bifacial Portable Solar PanelIs rated IP68. $399Scores 9.0

Verification2No directory listing for 32408 or 32406; EN 61730 self-declared, no certificate

Searched: Intertek UL CEC LabTest TÜV SÜD Certipedia SGS
Standard: UL 61730 needed for a listing
Claim: Goal Zero EU declaration 2018-034 cites EN 61730-1/-2 for 32406-32409, self-declared
Model: the briefcase is 32408, two Boulder 50 panels (32406); neither is listed
Maker: built by Shenzhen Topray Solar; none of its TÜV SÜD or Certipedia records names 32408
Holder: Goal Zero LLC; its only directory records are stations, fridges and cables, no panel

Better on verificationJackery SolarSaga 200W Bifacial Portable Solar PanelNo Intertek. $379Scores 4.0

Warranty & Support32 years for Goal Zero solar panels on the warranty page and product page

Guide: the user guide, an older edition, prints a 12-month warranty
Scope: workmanship and materials, for the original buyer only, not transferable

Better on warranty & supportJackery SolarSaga 500 X Bifacial Portable Solar PanelThe product page. $799Scores 6.0

Price

List: $399.95 at goalzero.com
Kit: Boulder 100 Briefcase Solar Charging Kit $424.95, adding a 10 A charge controller and 12 V battery cables

Summary

Tough glass Briefcase, heavy for 100 watts

What it is: two 50 W glass panels hinged into a 100 W briefcase with a kickstand, for Goal Zero Yeti stations
The trade-off: hard-wearing glass and frame, but heavy for 100 W and under typical folding-panel efficiency
Not checked: the temperature coefficient, IP rating and bypass diodes; Goal Zero publishes none
Look elsewhere for: MC4 leads, a light panel to carry far, or an output guarantee

Strengths

Glass and aluminum frame stand up to knocks and weather
Built-in kickstand needs no extra parts
Folds in half for carrying
Chains with other Goal Zero solar panels

Drawbacks

Low output for its size and weight
Below-typical module efficiency
No MC4 leadso other stations need an adapter
No power-output warranty
User guide prints a shorter warranty than the policy

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Social score

6.2 out of 10

Reddit4 out of 10

Complaints

Glass broken in shipping, per one owner

Read the full summary

r/SolarDIY: an owner whose Boulder 100 Briefcase arrived with one panel's glass broken in shipping reported 40 to 52 W from it and asked how to replace the glass (October 2025)

GoogleProduct-line6 out of 10

OutdoorGearLab: measured 166 W, 83 percent of rating, from the Boulder 200 Briefcase, scored it 69 and ranked it 7th of 12 portable panels (July 2026)
Dislikes: OutdoorGearLab found it very heavy at 43.3 lb measured, its legs fixed at one angle, and an adapter needed for other brands' stations
Top-Notch Outdoor: rated the Boulder 200 Briefcase 78 of 100 and its toughest build after it survived a rock strike, but called its charging speed ordinary for the bulk and price (July 2026)
Ties: both sites say they buy what they test and earn affiliate commission through their links

YouTubeProduct-line6 out of 10

Outdoor Adventures Team: a Boulder 200 Briefcase on a Yeti 500X read about 140 W in full sun, put a clear day at 145 to 150 W, and the frame and corner protection were praised (May 2020, 16K views)
Tie: the gear links are shortened bit.ly links and the video does not say how the panel was obtained

Amazon8 out of 10

Listing: Goal Zero's Amazon US listing for the Boulder 100 Briefcase (B06Y3TC113) reads 4.7 from 397 ratings, with no featured offer and three other sellers from $399.95 (October 2026)

User reviews7 out of 10

Liked

Rugged frame and carry bag
Fold-out stand makes aiming easy
Charges Yeti stations well in full sun

Complaints

Too heavy and bulky to take along
Low output in clear sun, per one owner
Bag leaves the handles exposed to dust

Read the full summary

REI: 41 native reviews of the Boulder 100 Briefcase average 4.6, 32 five-star, 6 four, 1 three, 0 two and 2 one-star, written January 2018 to July 2026 (read October 2026)
Excluded: REI's page shows 83 reviews; the other 42 are reposted from goalzero.com
Output: owners report 75 to 95 W in full sun on Yeti stations, while one owner in 2024 saw far below rating in clear sun
Build: owners praise the rugged frame, carry bag and fold-out stand; one finds it too heavy and bulky to take along

Trustpilot

Trustpilot rates Goal Zero 3.9 from 85 reviews on a claimed page that invites reviews, 69 percent five-star and 24 percent one-star (October 2026).

Track record

The BBB rates Goal Zero, LLC A-, not accredited, with 22 complaints in three years (October 2026).
No CPSC or Health Canada recall names a Goal Zero solar panel, searched in October 2026, though both recalled its Solar Series Combiner cable in February 2025 because it could let Nomad panels be damaged.

Not countedExcluded

Not counted in any pool: goalzero.com's own reviews and entries reposted from it at REI and Walmart, Goal Zero's and BioLite's YouTube channels and Facebook pages, Goal Zero staff posts, its affiliate program, and anything gathered in its promotions.

Summary

Brand-level

3.9 on Trustpilot, an A- from the BBB

Specs

CapacityNot applicable
AC OutputNot applicable
System VoltageNot applicable
Panel Power100-149 W
Charge CurrentNot applicable
Safety ListingClaimed only
Low-Temp ChargingNot applicable
Warranty2 Years
MonitoringNot applicable
Weight25.9 lb

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Not published by Goal Zero: cell type.

At a glance

Folds to 26.75 x 21.75 in
6 ft cable, 8 mm plug
21.5 V open-circuit voltage
Canvas carry bag in the box

Company

Goal Zero LLC of Draper, Utah sells Goal Zero in the US, and the brand belongs to BioLite, which acquired it from NRG Energy in April 2025.

Where it sells

It sells Nomad, Boulder and Ranger panels with a cart at goalzero.com and on Amazon US through its own store, and REI stocks the Boulder briefcases.

Description

The Goal Zero Boulder 100 Briefcase (SKU 32408, model 32408 on Goal Zero's declaration of conformity) is two 50 W monocrystalline panels under tempered glass in aluminum frames with corner protection, joined by a hinge so the pair folds shut like a briefcase.

It is rated 100 W, with 21.5 V open-circuit and 17.2 V at maximum power on the product page, and its user guide gives 18 to 22 V open-circuit.

Output runs through a blue 8 mm solar plug on a 6 ft cable, 14 to 21.5 V at up to 7 A, which chains to other 8 mm Boulder panels; arrays over 150 W need a Goal Zero combiner cable. Unfolded it measures 26.75 x 43.5 x 1.75 in, folded 26.75 x 21.75 x 3.75 in, and it weighs 25.9 lb (11.7 kg).

The box holds the panel with its cord and built-in kickstand and a canvas carrying bag. Goal Zero gives its solar panels a 2-year warranty on its warranty page and product page, while the user guide prints 12 months.

The Boulder 100 Briefcase Solar Charging Kit, at $424.95, adds a pre-installed 10 A charge controller, a mounting bracket and spade, SAE, ring-terminal and alligator-clip cables for charging 12 V batteries. The panel alone sells at $399.95 on goalzero.com.