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Ohmmu B19 Sodium 12V Battery

By OhmmuSKU Na-B19

DC battery moduleCase battery12.4 V30 Ah
Evidence score8/100Missing details
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Basic specsNot yet documentedDischarge200 A max.Charge30 A recommendedPeak current: 300 A$ / rated kWhUnavailableWarranty4 yearsSee termsLifetime productionNot publishedSize4.88 L*Value needs confirmation: The product page prints different dimensionsW: 122 × H: 205 × L: 195 mm4.54 kg10.01 lbCertificatesNone on fileEvidence missing

Key specs

Units
SKU
Na-B19
Official store listing
Sources

Ohmmu's store catalog lists SKU "Na-B19" for its listing "B19 - Sodium 12V Battery". The spec sheet prints the code "NA-B19".

Official store listing: Ohmmu Energy store Checked · Earlier document

Location: Store catalog feed, variant SKU

Documented

Chemistry
Sodium Transition Metal Oxide (NaMO2)
Official document
Sources

The Cell Chemistry row reads "Sodium Transition Metal Oxide (NaMO2)"; page 1 lists "Sodium Chemistry". Sodium-ion, recorded as printed in the table.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Mechanical Specifications table, Cell Chemistry row

Documented

Nominal voltage
12.4 V
Official document
Sources

The Voltage row reads "12.4V". The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Electrical Specifications table, Voltage row

Documented

Rated capacity
30 Ah
Official document
Sources

The Amp Hours (Tested to Lithium Standard) row reads "30Ah". The table prints its row labels first and the values after them in the same order. Ohmmu labels the sodium capacity as tested to the lithium standard and defines that standard nowhere in the sheet.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Electrical Specifications table, Amp Hours (Tested to Lithium Standard) row

Documented

Maximum discharge current
200 A
Official document
Sources

The Max Discharge Current row reads "200 Amps"; the sheet does not say whether this is continuous. The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Discharging Specifications table, Max Discharge Current row

Documented

Maximum charge current
60 A
Official document
Sources

The Max Charge Current row reads "60 Amps", in a table Ohmmu titles "Charging Specifications (Recommendations)". The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Charging Specifications (Recommendations) table, Max Charge Current row

Documented

Peak discharge current
300 A
Official document
Sources

The Peak Discharge Current row reads "300 Amps for 30 Seconds". The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Discharging Specifications table, Peak Discharge Current row

Documented

2 specs not documented yet: nominal energy, usable energyHelp fill in ›

All specs29
Chemistry
Sodium Transition Metal Oxide (NaMO2)
Official document
Sources

The Cell Chemistry row reads "Sodium Transition Metal Oxide (NaMO2)"; page 1 lists "Sodium Chemistry". Sodium-ion, recorded as printed in the table.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Mechanical Specifications table, Cell Chemistry row

Documented

Nominal energy
Not documented
Usable energy
Not documented
Nominal voltage
12.4 V
Official document
Sources

The Voltage row reads "12.4V". The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Electrical Specifications table, Voltage row

Documented

Rated capacity
30 Ah
Official document
Sources

The Amp Hours (Tested to Lithium Standard) row reads "30Ah". The table prints its row labels first and the values after them in the same order. Ohmmu labels the sodium capacity as tested to the lithium standard and defines that standard nowhere in the sheet.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Electrical Specifications table, Amp Hours (Tested to Lithium Standard) row

Documented

Maximum discharge current
200 A
Official document
Sources

The Max Discharge Current row reads "200 Amps"; the sheet does not say whether this is continuous. The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Discharging Specifications table, Max Discharge Current row

Documented

Maximum charge current
60 A
Official document
Sources

The Max Charge Current row reads "60 Amps", in a table Ohmmu titles "Charging Specifications (Recommendations)". The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Charging Specifications (Recommendations) table, Max Charge Current row

Documented

Peak discharge current
300 A
Official document
Sources

The Peak Discharge Current row reads "300 Amps for 30 Seconds". The table prints its row labels first and the values after them in the same order.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Discharging Specifications table, Peak Discharge Current row

Documented

Recommended charge current
30 A
Official document
Sources

The Recommended Charge Current row reads "30 Amps". Page 1 gives recommended charging currents by temperature "for longest lifespan per battery in parallel": ">32°F: 30A 0°− 32°F: 22.5A < 0°F: 15A".

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Charging Specifications (Recommendations) table, Recommended Charge Current row

Documented

Recommended charge voltage
15.2 to 15.8 V
Official document
Sources

The Absorption Voltage row reads "15.2-15.8V", with an absorption time of 30 minutes and no temperature compensation ("No/Disable"); page 1 sets equalization off.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Charging Specifications (Recommendations) table, Absorption Voltage row

Documented

Cycle rating
6,000 cycles
6000+ at 80% DoD, as printedOfficial document
Sources

The Cycle Lifespan row reads "6000+ @ 80% DOD", a lower bound at 80% depth of discharge; page 1 lists "6000+ Cycles @ 80% DOD". Charge and discharge rate, temperature and end-of-life capacity are not stated.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Electrical Specifications table, Cycle Lifespan row

Documented

Cycle life DOD
80 %
Official document
Sources

The depth of discharge of the cycle rating, from the Cycle Lifespan row "6000+ @ 80% DOD".

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF page 2, Electrical Specifications table, Cycle Lifespan row

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
    Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture)OfficialOhmmu EnergyOfficial document
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Archived copy captured on 2026-10-15.

    Location: Page 2 specification tables; page 1 features

    Retrieved

    Ohmmu Energy's 2-page spec sheet NA-B19 for the B19 Sodium 12V Battery, linked from its product page and captured on October 15, 2026. Page 1 lists the headline features and charging parameters; page 2 holds the Electrical, Charging, Mechanical, Discharging and Temperature tables, each printing its row labels first and the values after them in the same order, and the warranty line. No revision date is printed. Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by Ohmmu Energy. 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 · 2.13 MB

    Archived copy, unaltered, kept as a record of what Ohmmu Energy published. Original address: https://cdn.shopify.com/s/files/1/0705/2269/9821/files/Sodium_Spec_Sheet_-_B19.pdf?v=1788908134. 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: 5bf8c252018e96bae86b92fde5f0d3f01d9a244e9a1f4b222bd927a6a8141877

    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
    Ohmmu product page: B19 - Sodium 12V Battery (October 15, 2026 capture)OfficialOhmmu EnergyOfficial product page
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Archived copy captured on 2026-10-15.

    Location: Description, Key Features, Battery Specs, Warranty, Compatibility

    Retrieved

    Ohmmu Energy's own product page on ohmmu.com, captured on October 15, 2026: description, key features, the Battery Specs block (dimensions, terminals, weight), warranty terms and vehicle compatibility. Manufacturer claims, not independent tests; the page carries no revision date.

    Open

Archived documents

Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture)

Archived copy of a document published by Ohmmu Energy. 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 · 2.13 MB

Archived copy, unaltered, kept as a record of what Ohmmu Energy published. Original address: https://cdn.shopify.com/s/files/1/0705/2269/9821/files/Sodium_Spec_Sheet_-_B19.pdf?v=1788908134. 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: 5bf8c252018e96bae86b92fde5f0d3f01d9a244e9a1f4b222bd927a6a8141877

Submit a document

Warranty

Remedy
100% Full Replacement Coverage on performance failure of any sort
Official product page
Sources

The product page warranty section; it adds that a claim "Requires inspection and is determined solely by Ohmmu Energy." where printed and links the full warranty details, which were not captured.

Official product page: Ohmmu product page: B19 - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Product page, Warranty

Documented

Warranty term
4 years
Official document
Sources

The sheet prints "4 Year Warranty Full Coverage" and a warranty line of 0-4 Years with 100% Replacement Coverage; the product page prints a 4 Year Warranty with 100% Full Replacement Coverage on performance failure of any sort. A summary panel lower on the same product page reads "100 % 3 year coverage".

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: B19 - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Location: Spec sheet NA-B19, PDF pages 1 and 2; product page, Warranty

Documented

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Price history

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Owner reviews

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Evidence score

8/100Missing details40% 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 details. This number counts only the evidence recorded so far. The source review for this product is not finished, or the maker has not disclosed enough, so the number can only go up.

Missing for this product: Certificates evidence needed; Warranty energy disclosure evidence needed; Cell model disclosure evidence needed.

12 V · Case battery · Rated capacity

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

Warranty term4 years4 / 20

4 years · 20% weight

4 of 20 years, the best documented for a home storage battery (printed by the maker): Bioenno Power 6V 3Ah LiFePO4 Battery (PVC, BLF-0603W)

The sheet prints "4 Year Warranty Full Coverage" and a warranty line of 0-4 Years with 100% Replacement Coverage; the product page prints a 4 Year Warranty with 100% Full Replacement Coverage on performance failure of any sort. A summary panel lower on the same product page reads "100 % 3 year coverage".

20 / 100 × 20 = 4 points.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: B19 - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document
Lifetime / capacity6,000 cycles4 / 20

Cycle rating disclosed · 20% weight

Documented cycle rating earns 20% of this criterion. More evidence is needed to compare lifetime MWh per kWh.

20 × 0.2 = 4 points.

Official document: Ohmmu spec sheet NA-B19: B19 Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier document

Research pending, 0 points: Certificates, 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
Na-B19

Manufacturer SKU Na-B19 · US market

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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