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Ohmmu's store catalog lists SKU "Na-H7-AS" for its listing "H7/Group 27F - Sodium 12V Battery". The spec sheet prints the code "NA-H7/Group 27F".
Official store listing: Ohmmu Energy store Checked · Earlier documentLocation: Store catalog feed, variant SKU
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Cell Chemistry row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Voltage row
Documented
The Amp Hours (Tested to Lithium Standard) row reads "50Ah". 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Amp Hours (Tested to Lithium Standard) row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Discharging Specifications table, Max Discharge Current row
Documented
The Max Charge Current row reads "100 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Charging Specifications (Recommendations) table, Max Charge Current row
Documented
The Peak Discharge Current row reads "400 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Discharging Specifications table, Peak Discharge Current row
Documented
The Recommended Charge Current row reads "50 Amps". Page 1 gives recommended charging currents by temperature "for longest lifespan per battery in parallel": ">32°F: 50A 0°− 32°F: 37.5A < 0°F: 25A".
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Charging Specifications (Recommendations) table, Recommended Charge Current row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Charging Specifications (Recommendations) table, Absorption Voltage row
Documented
2 specs not documented yet: nominal energy, usable energyHelp fill in ›
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Cell Chemistry row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Voltage row
Documented
The Amp Hours (Tested to Lithium Standard) row reads "50Ah". 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Amp Hours (Tested to Lithium Standard) row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Discharging Specifications table, Max Discharge Current row
Documented
The Max Charge Current row reads "100 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Charging Specifications (Recommendations) table, Max Charge Current row
Documented
The Peak Discharge Current row reads "400 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Discharging Specifications table, Peak Discharge Current row
Documented
The Recommended Charge Current row reads "50 Amps". Page 1 gives recommended charging currents by temperature "for longest lifespan per battery in parallel": ">32°F: 50A 0°− 32°F: 37.5A < 0°F: 25A".
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Charging Specifications (Recommendations) table, Recommended Charge Current row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Charging Specifications (Recommendations) table, Absorption Voltage row
Documented
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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Cycle Lifespan row
Documented
The depth of discharge of the cycle rating, from the Cycle Lifespan row "6000+ @ 80% DOD".
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Cycle Lifespan row
Documented
Published claims and calculations are not independently tested lifetime output.
Converted: 17 lb x 0.45359237 kg/lb, rounded to 0.01 kg
The Weight row reads "17 LBS", in pounds only. The table prints its row labels first and the values after them in the same order. The product page prints the same 17 lbs.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Weight row
Converted
The Dimensions row reads "314 x 175 x 190 (+13)mm"; the 13 mm in brackets is the Group conversion spacer that page 1 of the sheet lists, and the product page prints a 13 mm spacer row beside Length 314, Width 175 and Height 190 mm. The battery itself is recorded without the spacer.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Dimensions row
Calculated
The Terminal Type & Thread row reads "Standard SAE". The table prints its row labels first and the values after them in the same order. The product page prints "SAE, Positive Top Back Left", which also gives the positive terminal position.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Terminal Type & Thread row
Documented
The Sealed and Water Resistant Case row reads "IP65 Non-Submersible"; page 1 lists "IP65 Water Resistant & Sealed". Ohmmu says the case is not submersible.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Sealed and Water Resistant Case row
Documented
Ohmmu prints "Any vehicle that uses H7 or Group 27F 12V battery"; "Extreme cold kills cranking power and desert heat degrades cells.". The labels are Ohmmu's own words: Automotive from "Any vehicle that uses H7 or Group 27F 12V battery" and the cranking-power wording.
Official product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Product page, description and Compatibility
Documented
The Storage Recommendation prints "-40°F to 172°F (-40°C to 78°C)" and recommends storing in a dry location between 65 and 80°F, charged to 14.8V and disconnected.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Storage Recommendation
Documented
Converted: (-14 °F - 32) x 5/9 = -25.6 °C; (172 °F - 32) x 5/9 = 77.8 °C, rounded to 0.1 °C
The sheet prints the Charge Temperature row as "-14°F to 172°F" in degrees Fahrenheit only; converted to degrees Celsius.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Temperature Specifications table, Charge Temperature row
Converted
Converted: (-40 °F - 32) x 5/9 = -40 °C; (172 °F - 32) x 5/9 = 77.8 °C, rounded to 0.1 °C
The sheet prints the Discharge Temperature row as "-40°F to 172°F" in degrees Fahrenheit only; converted to degrees Celsius.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Temperature Specifications table, Discharge Temperature row
Converted
The Cell Type row reads "Cylindrical". The table prints its row labels first and the values after them in the same order.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Cell Type row
Documented
The Case Material row reads "ABS Fire Rated". The table prints its row labels first and the values after them in the same order.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Case Material row
Documented
Charged Reviews classified this product from the documents it is based on. It is our own grouping, not a manufacturer claim.
Site classification: a single 12V battery in a sealed ABS case with top terminals, sold to replace a lead-acid 12V battery, as the spec sheet and the product page describe it.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet mechanical table; product page Battery Specs
The BMS Type row reads "Balancing Circuit". The table prints its row labels first and the values after them in the same order.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, BMS Type row
Documented
The Cold Cranking Amps row reads "1400+", a lower bound; page 1 lists "1400+ Cold Cranking Amps". The test temperature and method are not printed. The product page prints "With 1,400 CCAs".
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Discharging Specifications table, Cold Cranking Amps row
Documented
The Terminal Torque row reads "7Nm (5ft-lb)" (Nm as printed). The table prints its row labels first and the values after them in the same order.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Mechanical Specifications table, Terminal Torque row
Documented
The Usable Depth of Discharge row reads "100%". The table prints its row labels first and the values after them in the same order.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Usable Depth of Discharge row
Documented
Converted: (-40 °F - 32) x 5/9 = -40 °C; (172 °F - 32) x 5/9 = 77.8 °C, rounded to 0.1 °C
The sheet prints the Operating Temperature row as "-40°F to 172°F" in degrees Fahrenheit only; converted to degrees Celsius.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Operating Temperature row
Converted
The Internal Resistance row reads "5mΩ" for the battery; the measuring method and state of charge are not stated.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF page 2, Electrical Specifications table, Internal Resistance row
Documented
Published claims and calculations, not independent test results.
Archived copy captured on 2026-10-15.
Location: Page 2 specification tables; page 1 features
Retrieved
Ohmmu Energy's 2-page spec sheet NA-H7/Group 27F for the H7/Group 27F 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 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 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_-_H7_Group_27F.pdf?v=1788908134. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 4923d7974cce65743713315023702a1029c7bdabcff50c5185e060dc712ded6a
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
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.
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 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_-_H7_Group_27F.pdf?v=1788908134. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 4923d7974cce65743713315023702a1029c7bdabcff50c5185e060dc712ded6a
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: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Product page, Warranty
Documented
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.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentLocation: Spec sheet NA-H7/Group 27F, PDF pages 1 and 2; product page, Warranty
Documented
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Own one? A verified review needs a receipt and a serial number photo, and counts 19× in the owner rating.
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.
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.
20 / 100 × 20 = 4 points.
Official document: Ohmmu spec sheet NA-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentOfficial product page: Ohmmu product page: H7/Group 27F - Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentCycle 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-H7/Group 27F: H7/Group 27F Sodium 12V Battery (October 15, 2026 capture) Checked · Earlier documentResearch 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.
No certificates on file. Certificate guide
No sourced accessories or replacement parts listed yet.
Manufacturer SKU Na-H7-AS · US market
No historical observations recorded yet.
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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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Prices · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.
