VMAXTANKS MR137-120 Group 31 Deep Cycle AGM Battery (12 V, 120 Ah): VMAXTANKS's MR137-120 product page (title prints MR137-120); the image is the page's main product image (og:image, file named "MR137 Marine Group 31 Battery 120Ah"), and its label prints "MR-137" and "12V".

1 photo · Image from vmaxtanks.com

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Manufacturer and seller images. Configuration examples may include additional equipment.

Image source: VMAXTANKS's MR137-120 product page (title prints MR137-120); the image is the page's main product image (og:image, file named "MR137 Marine Group 31 Battery 120Ah"), and its label prints "MR-137" and "12V".

VMAXTANKS MR137-120 Group 31 Deep Cycle AGM Battery (12 V, 120 Ah)

Name: VMAXTANKS MR137-120 Group 31 Deep Cycle AGM Battery (12 V, 120 Ah)
Brand: VMAXTANKS

By VMAXTANKSSold by AmazonSKU not documented

DC battery module Case battery 12 V 120 Ah

Evidence scoreResearch pending

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$289.96

$289.96 at Amazon

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Basic specsNot yet documentedDischargeUnknownChargeUnknown $ / rated kWhUnavailable WarrantyUnknownSee terms Lifetime productionNot published SizeUnknown CertificatesNone on fileEvidence missing

Key specs

Units

Chemistry: AGM
Official product page
Sources
The product heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery" (absorbed glass mat lead-acid).
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading
Documented
Nominal voltage: 12 V
Official product page
Sources
The product heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery".
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading
Documented
Rated capacity: 120 Ah
Official product page
Sources
The product heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery" with no discharge rate.
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading
Documented
Use cases: Marine, RV and van
Official product page
Sources
The page title prints "12V 120Ah Deep Cycle AGM Battery - Group 31 Marine, RV". The labels are the closed set's labels for the uses the maker names.
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Page title
Documented
Battery format: Case battery
Site classificationBased onOfficial product page
Details
Charged Reviews classified this product from the documents it is based on. It is our own grouping, not a manufacturer claim.
The heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery". Classified as Case battery from the maker's own words for this model; 31 is a BCI group size.
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading; page title

3 specs not documented yet: nominal energy, usable energy, dimensionsHelp fill in ›

All specs8

Chemistry: AGM
Official product page
Sources
The product heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery" (absorbed glass mat lead-acid).
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading
Documented
Nominal energy: Not documented
Usable energy: Not documented
Nominal voltage: 12 V
Official product page
Sources
The product heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery".
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading
Documented
Rated capacity: 120 Ah
Official product page
Sources
The product heading prints "MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery" with no discharge rate.
Official product page: VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026) Checked Oct 18, 2026 · Earlier document
Location: Product heading
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

WEB
VMAXTANKS product page: MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery (captured October 18, 2026)OfficialVMAX USAOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-18.
Location: Page title and product heading
Retrieved Oct 18, 2026
VMAX USA's own US store product page (vmaxtanks.com), captured October 18, 2026. Only the product heading and page title are readable text; the page's specifications table is drawn by a script and is not read here. Manufacturer statements, not independent tests. No manual or data sheet is linked from the page.
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Warranty

No warranty terms on file.

Sellers

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Amazon

4.1 (7)not verified

Sold by bargainshore

Listing SKU B01N9WOPTM

$289.96Price as of Nov 13, 2026, 4:40 PM PST, may change

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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.

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.

Research pending, 0 points: Certificates, Warranty term, Warranty energy disclosure, Lifetime / capacity, 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: MR137-120

Manufacturer SKU unknown · US market

No historical observations recorded yet.

Community discussions

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Recalls / legal notices

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VMAXTANKSProducts, reviews and history

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