NOCO GENIUS2 6V/12V 2A Smart Battery Charger

By NOCOSold by AmazonSKU GENIUS2

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Key specs

Units
SKU
GENIUS2
Official warranty
Sources

NOCO's model code, printed as "Model Number: GENIUS2" in the user guide and as the data sheet's heading.

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide, radio frequency statement; data sheet heading

Documented

Power
30 W
Official warranty
Sources

Printed as "30W Max" in the user guide and "30 Watts Max" in the data sheet; the archived specs page prints "Power Consumption: 30 Watts (Max)".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Output Power

Documented

Weight
0.5 kg1.1 lb converted
Official warranty
Sources

Printed as "1.1 Pounds (0.5kg)"; the kilogram figure is NOCO's own. The data sheet prints "1.1 lbs (0.50 kg)".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Weight

Documented

Input voltage
100-240 VAC, 50-60Hz
NOCO documents disagree

The GENIUS2 user guide (4.18.2024a, page 10) prints "100-240 VAC, 50-60Hz"; the GENIUS2 data sheet (02.21.2024) prints "120-240 VAC, 50-60Hz" and the archived specs page prints "Line Voltage: 120V to 240V AC". The user guide's value is recorded.

Official warranty
Sources

Printed as "100-240 VAC, 50-60Hz" in the user guide's Technical Specifications.

120-240 VAC, 50-60Hz

Printed as "120-240 VAC, 50-60Hz" in the data sheet's LINE VOLTAGE AC row.

Official datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document
120V to 240V AC, 50Hz to 60Hz

Printed as "Line Voltage: 120V to 240V AC" and "Frequency: 50Hz to 60Hz" on the archived specs page.

Official product page: NOCO GENIUS2 Tech Specs page (no.co/genius2/specs, Internet Archive copy of June 13, 2026) Checked · Earlier document
Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Input Voltage AC

Documented

Charge current
2 A
Official warranty
Sources

Printed as "2A (12V), 2A (6V)" in the user guide and the data sheet; the archived specs page prints "Charging Current: 2 Amps DC".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Charging Current

Documented

Output voltage
Various
Official warranty
Sources

The user guide and the data sheet print "Charging Voltage: Various" because the voltage depends on the selected mode. The user guide's Charging Modes table (peak voltage measured at 25 degrees C) prints 12V 14.5V, 12V AGM 14.8V, 12V LITHIUM 14.6V and 6V 7.25V, each at 2A for batteries up to 40Ah, plus a Force Mode for batteries below 1V.

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide page 10, Charging Voltage; page 4, Charging Modes

Documented

Battery voltage
6V & 12V
Official warranty
Sources

Printed as "6V & 12V". The archived specs page prints "Voltages: 6 Volts 12 Volts".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Type of Batteries

Documented

Battery chemistry
Wet, Gel, MF, CA, EFB, AGM, Lithium
Official warranty
Sources

Printed as "Wet, Gel, MF, CA, EFB, AGM, Lithium." The About paragraph reads: "The GENIUS2 is designed for charging all types of 6V & 12V lead-acid batteries, including Lithium (LiFePO4), Wet (Flooded), Gel, MF (Maintenance-Free), CA (Calcium), EFB (Enhanced Flooded Battery), and AGM (Absorption Glass Mat) batteries." The 12V LITHIUM mode is "For use on batteries with Battery Management Systems (BMS) only." The data sheet prints "Lead-Acid and Lithium".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Battery Chemistries; About GENIUS2 paragraph; 12V LITHIUM mode

Documented

All specs7
Power
30 W
Official warranty
Sources

Printed as "30W Max" in the user guide and "30 Watts Max" in the data sheet; the archived specs page prints "Power Consumption: 30 Watts (Max)".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Output Power

Documented

Weight
0.5 kg1.1 lb converted
Official warranty
Sources

Printed as "1.1 Pounds (0.5kg)"; the kilogram figure is NOCO's own. The data sheet prints "1.1 lbs (0.50 kg)".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Weight

Documented

Input voltage
100-240 VAC, 50-60Hz
NOCO documents disagree

The GENIUS2 user guide (4.18.2024a, page 10) prints "100-240 VAC, 50-60Hz"; the GENIUS2 data sheet (02.21.2024) prints "120-240 VAC, 50-60Hz" and the archived specs page prints "Line Voltage: 120V to 240V AC". The user guide's value is recorded.

Official warranty
Sources

Printed as "100-240 VAC, 50-60Hz" in the user guide's Technical Specifications.

120-240 VAC, 50-60Hz

Printed as "120-240 VAC, 50-60Hz" in the data sheet's LINE VOLTAGE AC row.

Official datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document
120V to 240V AC, 50Hz to 60Hz

Printed as "Line Voltage: 120V to 240V AC" and "Frequency: 50Hz to 60Hz" on the archived specs page.

Official product page: NOCO GENIUS2 Tech Specs page (no.co/genius2/specs, Internet Archive copy of June 13, 2026) Checked · Earlier document
Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Input Voltage AC

Documented

Charge current
2 A
Official warranty
Sources

Printed as "2A (12V), 2A (6V)" in the user guide and the data sheet; the archived specs page prints "Charging Current: 2 Amps DC".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Charging Current

Documented

Output voltage
Various
Official warranty
Sources

The user guide and the data sheet print "Charging Voltage: Various" because the voltage depends on the selected mode. The user guide's Charging Modes table (peak voltage measured at 25 degrees C) prints 12V 14.5V, 12V AGM 14.8V, 12V LITHIUM 14.6V and 6V 7.25V, each at 2A for batteries up to 40Ah, plus a Force Mode for batteries below 1V.

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier documentOfficial datasheet: NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name) Rev 02.21.2024 · Checked · Earlier document

Location: User guide page 10, Charging Voltage; page 4, Charging Modes

Documented

Battery voltage
6V & 12V
Official warranty
Sources

Printed as "6V & 12V". The archived specs page prints "Voltages: 6 Volts 12 Volts".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Technical Specifications, Type of Batteries

Documented

Battery chemistry
Wet, Gel, MF, CA, EFB, AGM, Lithium
Official warranty
Sources

Printed as "Wet, Gel, MF, CA, EFB, AGM, Lithium." The About paragraph reads: "The GENIUS2 is designed for charging all types of 6V & 12V lead-acid batteries, including Lithium (LiFePO4), Wet (Flooded), Gel, MF (Maintenance-Free), CA (Calcium), EFB (Enhanced Flooded Battery), and AGM (Absorption Glass Mat) batteries." The 12V LITHIUM mode is "For use on batteries with Battery Management Systems (BMS) only." The data sheet prints "Lead-Acid and Lithium".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide page 10, Battery Chemistries; About GENIUS2 paragraph; 12V LITHIUM mode

Documented

Published claims and calculations, not independent test results.

Documents

3 on file
  • PDF
    NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name)OfficialNOCOOfficial datasheet
    Source details
    Revision
    02.21.2024
    Revision date
    Not stated

    Archived copy captured on 2026-10-10.

    Location: Page 2, TECHNICAL SPECIFICATIONS block

    Retrieved

    NOCO's own document, served from no.co's download folder. No.co's web pages refused our research agent (a challenge page), but this PDF was served directly; it was obtained by Alternative Research on October 10, 2026 at 01:42 UTC and checked by Research against its printed content. The date in the file name is not printed inside the document. Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by NOCO. 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 02.21.2024 · 2.46 MB

    Archived copy, unaltered, kept as a record of what NOCO published. Original address: https://no.co/media/wysiwyg/downloads/brochures/Genius/genius2_data_sheet_02.21.2024.pdf. Copyright and takedown

    Source first found
    This copy captured
    Archived
    File detailsOriginal source
    Pages
    2
    Embedded creation date
    Embedded modification date

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

    SHA-256: 44cef8041f42f0a8e34d52e373af38767beee89b3951fe70b7954cb8479f1525

    Open
  • PDF
    NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name)OfficialNOCOOfficial warranty
    Source details
    Revision
    4.18.2024a
    Revision date
    Not stated

    Archived copy captured on 2026-10-10.

    Location: Page 4, How To Use / Charging Modes; page 10, Technical Specifications and warranty heading

    Retrieved

    NOCO's own document, served from no.co's download folder. No.co's web pages refused our research agent (a challenge page), but this PDF was served directly; it was obtained by Alternative Research on October 10, 2026 at 01:42 UTC and checked by Research against its printed content. The date in the file name is not printed inside the document. Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by NOCO. 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 4.18.2024a · 0.46 MB

    Archived copy, unaltered, kept as a record of what NOCO published. Original address: https://no.co/media/wysiwyg/downloads/User_Guides/Genius/genius2na_user_guide_4.18.2024a.pdf. Copyright and takedown

    Source first found
    This copy captured
    Archived
    File detailsOriginal source
    Pages
    36
    Embedded creation date
    Embedded modification date

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

    SHA-256: 0add4d4e244f834e9ac9e85e22b6d81bc2bb67d757a51bbd364ee7126557d566

    Open
  • WEB
    NOCO GENIUS2 Tech Specs page (no.co/genius2/specs, Internet Archive copy of June 13, 2026)OfficialNOCOOfficial product page
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Archived copy captured on 2026-10-10.

    Location: Tech Specs section

    Retrieved

    Internet Archive copy, archived on June 13, 2026, of NOCO's own specifications page https://no.co/genius2/specs. No.co's live pages refused our research agent, so this copy was obtained by Alternative Research from the Internet Archive on October 10, 2026 at 01:35 UTC. It is labeled as an archived copy, not a current page. Ranked after NOCO's user guide and data sheet; manufacturer claims, not independent tests.

    Open

Archive and older revisions

Archive and older revisions0

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

Archived documents

NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name)

Archived copy of a document published by NOCO. 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 4.18.2024a · 0.46 MB

Archived copy, unaltered, kept as a record of what NOCO published. Original address: https://no.co/media/wysiwyg/downloads/User_Guides/Genius/genius2na_user_guide_4.18.2024a.pdf. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
36
Embedded creation date
Embedded modification date

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

SHA-256: 0add4d4e244f834e9ac9e85e22b6d81bc2bb67d757a51bbd364ee7126557d566

NOCO GENIUS2 6V & 12V 2A data sheet (dated 02.21.2024 in its file name)

Archived copy of a document published by NOCO. 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 02.21.2024 · 2.46 MB

Archived copy, unaltered, kept as a record of what NOCO published. Original address: https://no.co/media/wysiwyg/downloads/brochures/Genius/genius2_data_sheet_02.21.2024.pdf. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
2
Embedded creation date
Embedded modification date

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

SHA-256: 44cef8041f42f0a8e34d52e373af38767beee89b3951fe70b7954cb8479f1525

Submit a document

Warranty

Product warranty
3 years
Official warranty
Sources

Printed as "NOCO Three (3) Year Limited Warranty". The archived specs page prints "3-Year Limited Warranty".

Official warranty: NOCO GENIUS2 User Guide & Warranty (North America, dated 4.18.2024a in its file name) Rev 4.18.2024a · Checked · Earlier document

Location: User guide, warranty section heading

Documented

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$49.95Price as of Nov 12, 2026, 5:40 PM PST, may change
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Certificates

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Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model
GENIUS2

Manufacturer SKU GENIUS2 · US market

No historical observations recorded yet.

Community discussions

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Recalls / legal notices

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