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HEKO Solar Master 300 Portable Power Station

By HEKO SolarSKU ADVANCE 300B

Power station
Evidence scoreResearch pending
No owner reviews yet · Write the first
Battery capacity231 WhRated AC output300 WSurge AC output 450 WSolar input limitNot statedSolar input voltageNot statedWeight2.76 kg / 6.08 lbValue needs confirmation: The Dutch page prints 2.8 kgDimensions 142 W × 148 H × 192 L mmCertificatesNone on fileEvidence missing

Key specs

Units
SKU
ADVANCE 300B
Official user manual
Sources

Printed as "ADVANCE 300B" in HEKO Solar's own manual.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: General specifications, Model

Documented

Rated capacity
0.23 kWh
Converted: 231 Wh / 1000 = 0.231 kWh
Official user manual
Sources

Converted: 231 Wh / 1000 = 0.231 kWh

Printed as 231Wh.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Battery Capacity

Converted

AC output voltage
230 V
Official user manual
Sources

Printed as "230V~50Hz".

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: Dutch general specifications, Stopcontact

Documented

Weight
2.76 kg6.08 lb converted
The Dutch page prints 2.8 kg

The English specifications print 6.08 lbs (2.76 kg); the Dutch specifications of the same manual print "Gewicht 2.8 kg".

Official user manual
Sources

Printed as "6.08 lbs (2.76 kg)" in English.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Weight

Documented

Dimensions
4.04 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
W: 142 × H: 148 × L: 192 mmW: 5.59 × H: 5.83 × L: 7.56 in convertedOfficial user manual
Sources

Printed as "L192 x W142 x H148 mm".

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Dimensions

Calculated

Charging temperature
0 to 40 °C32 to 104 °F converted
Official user manual
Sources

Charging temperature printed as "32 to 104°F (0 to 40°C)".

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Charging and Discharging Temperature

Documented

Discharging temperature
-10 to 40 °C14 to 104 °F converted
Official user manual
Sources

Discharging temperature printed as "14 to 104°F (-10 to 40°C)".

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Charging and Discharging Temperature

Documented

Rated AC output
300 W
Official user manual
Sources

Printed as "Stopcontact 1 x 230V~50Hz 300W, 450W piek" (one outlet, 300 W, 450 W peak). Not stated as continuous.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: Dutch general specifications, Stopcontact

Documented

Battery capacity
231 Wh
Official user manual
Sources

Printed as "Lithium Battery 231Wh (22.2V, 10.4Ah)" (English); the Dutch page prints "Capaciteit 231Wh (14.8, 15.6)". The Wh figure agrees; the voltage and Ah do not, so neither is recorded.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Battery Capacity

Documented

1 spec not documented yet: usable capacityHelp fill in ›

All specs11
Rated capacity
0.23 kWh
Converted: 231 Wh / 1000 = 0.231 kWh
Official user manual
Sources

Converted: 231 Wh / 1000 = 0.231 kWh

Printed as 231Wh.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: English general specifications, Battery Capacity

Converted

Usable capacity
Not documented
AC output voltage
230 V
Official user manual
Sources

Printed as "230V~50Hz".

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Location: Dutch general specifications, Stopcontact

Documented

Lifetime production

Not published

Published claims and calculations are not independently tested lifetime output.

Published claims and calculations, not independent test results.

Documents

1 on file
  • PDF
    Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO SolarOfficialHEKO SolarOfficial user manual
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Archived copy captured on 2026-10-30.

    Location: PDF page 7 (English general specifications), Dutch general specifications

    Retrieved

    HEKO Solar's own bilingual (English and Dutch) user manual for the Master 300 portable power station (printed model ADVANCE 300B), served from the hekosolar.com store files (cdn.shopify.com) and linked from the "Producthandleidingen" (product manuals) page on hekosolar.com. Captured on October 30, 2026. Primary source for the figures it prints. Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by HEKO Solar. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

    Archived backup Revision not recorded · 3.05 MB

    Archived copy, unaltered, kept as a record of what HEKO Solar published. Original address: https://cdn.shopify.com/s/files/1/0956/3268/7435/files/Manual_Advance300B_-_Master_300_EN_NL.pdf?v=1758738751. Copyright and takedown

    Source first found
    This copy captured
    Archived
    File detailsOriginal source
    Pages
    28

    Embedded dates are file metadata, not independent proof of publication.

    SHA-256: 9ea31081e4735ffe51bdd5646593a7100b999a2607295bb383f4d62e3341d6ba

    Open

Archive and older revisions

Archive and older revisions1

Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.

  • WEB
    Producthandleidingen (product manuals), HEKO SolarOfficialHEKO SolarOfficial instruction manual
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Archived copy captured on 2026-10-30.

    Location: Manual download links

    Retrieved

    HEKO Solar's own manuals page on hekosolar.com, captured on October 30, 2026. It links every manual cited here, including the Master 1800 manual for a power station no longer in the store's product list. Manufacturer claims, not independent tests.

    Open

Archived documents

Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar

Archived copy of a document published by HEKO Solar. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup Revision not recorded · 3.05 MB

Archived copy, unaltered, kept as a record of what HEKO Solar published. Original address: https://cdn.shopify.com/s/files/1/0956/3268/7435/files/Manual_Advance300B_-_Master_300_EN_NL.pdf?v=1758738751. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
28

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 9ea31081e4735ffe51bdd5646593a7100b999a2607295bb383f4d62e3341d6ba

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Warranty

No warranty terms on file.

Sellers

No sellers found.

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Price history

No seller price history.

Owner reviews

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Your reviews · Review policy

Evidence score

Research pending0% documented

The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.

Missing for this product: Certificates evidence needed; Warranty term needed; Warranty energy disclosure evidence needed; Lifetime / capacity evidence needed; Cell model disclosure evidence needed.

Power stations · Output unconfirmed · Rated capacity

The warranty term and the lifetime energy are each scored against the best documented value for a power station: a value earns its share of that best, times the weight. A documented value always earns points; an undisclosed one earns 0.

Lifetime / capacityResearch pending0 / 20

No qualifying figure · 20% weight

Not published. No lifetime-production bonus.

Not documented. Undisclosed data scores 0.

Official user manual: Master 300 (ADVANCE 300B) user manual (English and Dutch), HEKO Solar Checked · Earlier document

Research pending, 0 points: Certificates, Warranty term, Warranty energy disclosure, Cell model disclosure.

Computed from public specifications and evidence records. Warranty duration is not service quality; certificate evidence points are not a safety rating. Compatibility and installation limits still apply.

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Certificates

No certificates on file. Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model
Master 300

Manufacturer SKU ADVANCE 300B

No historical observations recorded yet.

Community discussions

No discussions linked yet. Search DIY Solar Forum

Recalls / legal notices

No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice

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