What are the signs of a faulty battery?

Poor performance, low voltage, failure to charge, swollen case, or acid corrosion.

How to judge whether a battery is good or defective?

First check for obvious defects such as open circuit, short circuit, or damaged casing. If no external issues, test battery capacity with professional equipment.

What causes zero voltage?

Usually caused by open circuit, such as broken electrode column, poor partition welding, or defective terminal welding.

What is your warranty policy for defective batteries?

Please provide photos and details of the defective units. Once confirmed, we will send replacements in your next order.

High-Efficiency 12V 7ah AGM Deep Cycle Battery for UPS Systems

Name: High-Efficiency 12V 7ah AGM Deep Cycle Battery for UPS Systems
Brand: Zhejiang Just Electrical Appliances Co., Ltd.
SKU: 2079144955

Zhejiang, ChinaZhejiang Just Electrical Appliances Co., Ltd.

US$4.00-6.00

1,000 Pieces

Product profile

Customization

Available

Type

Lead-Acid Batteries

Usage

UPS, Electric Power, Lighting, Electric Bicycle

Model NO.

12V 7Ah

Nominal Voltage

12V

Discharge Rate

High Discharge Rate

Shape

Square Battery

Electrolyte

Acid

Installation

Packaged

Rechargeable

Chargeable

Model

12V 7ah VRLA UPS Battery

Voltage Range

2V, 6V, 8V, 12V

Capacity Range

0.3ah-250ah

More Use

UPS, Inverter, Solar &Wind, EPS, Electric, Vehicle

OEM

OEM Your Brand Freely

Certificate

CE, ISO, Ts16949, SGS, RoHS

Warranty

5 Years

Color

Black, White, Gray and Colorful

Company Area

100.000square Meters

Trade Value

50.000.000USD

Transport Package

Carton in Pallet

Specification

151*64*94*100mm

Trademark

TNT/LARGESTAR/BOOSTER

Origin

Zhejaing, China

HS Code

85072000

Production Capacity

5000000PCS/Year

Key features

AGM Technology Design: Sealed maintenance-free design with high gas recombination rate and corrosion-resistant grid alloy.

Wide Voltage Range: Available in 2V, 6V, 8V, and 12V options with capacity from 0.3Ah to 250Ah.

OEM Branding Service: Free OEM service allows printing your logo on the battery case and customizing based on samples.

Comprehensive Certifications: Products certified with CE, ISO, IATF16949, SGS, RoHS, and SONCAP for global markets.

Long Service Life: Designed for stable backup power with an expected service life of around 3 years under normal usage.

High Discharge Performance: Engineered for high-rate discharge with extremely low self-discharge and safe sealed operation.

100% Quality Inspection: Every product undergoes full visual and functional inspection before shipment.

Flexible Customization: Supports full customization, minor customization, and custom dimensions based on client designs.

Company profile

High Repeat Buyers ChoiceYears of Export ExperiencePatents AwardedManagement Certification

Zhejiang Just Electrical Appliances Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 24 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤2.60h

AI-Powered supplier vetting

SummaryThe supplier is identified as a manufacturing factory in Lanxi, Jinhua, and reports a manufacturing area exceeding 100,000 square meters with stated production capability of 5,000,000 pieces. It reports ISO, environmental, automotive-quality, and product-related certifications, although some certification details are presented in company-description form. The supplier has broad customization and ODM capabilities, developed new products during the past year, and offers an SDK. Manufacturing controls include written corrective-action, complaint-handling, supplier-assessment, and quality-assurance procedures. Financial and cash-flow records are indicated for 2023–2025, but no detailed financial results are provided. The supplier lacks inventory, overseas warehouses, overseas agents or branches, overseas showrooms, and offline trade-show experience. It states that it provides OEM services for recognized brands, but no customer names or verifiable case details are supplied.

Supplier typeThe supplier is explicitly classified as a factory in the manufacturing industry and reports its own manufacturing area and production capability. This supports identification as a direct manufacturing supplier rather than a trading-only company.

CertificationsThe supplier reports ISO9001, ISO14001, ISO/TS16949, SGS, CE, RoHS, SONCAP, ISO9001:2015, ISO45001:2018, and other certifications. The slices provide explicit evidence of multiple certifications, although certificate validity and scope are not independently detailed.

After-Sales capabilityThe supplier has documented procedures and records for handling customer complaints and corrective and preventive actions, which supports a formal service-response mechanism. However, it has no overseas agents or branches, no overseas showroom, and no overseas warehouse, limiting demonstrated overseas after-sales infrastructure.

R&D capabilityThe supplier reports new products during the past year, ODM services, and an available SDK. These are direct indicators of product-development and technical support capability.

Production capacityThe supplier reports a manufacturing area exceeding 100,000 square meters, production capability of 5,000,000 pieces, valid contracts with associated subcontractors, 12 qualified service-capability suppliers, and written quality and supplier-management procedures. It also reports one unit of quality-control capability for own-brand quantities, while inventory capacity is explicitly unavailable.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM service availability, demonstrating broad stated customization coverage.

Client casesThe supplier states that it provides OEM services for recognized brands, which is evidence of at least one category of brand-serving experience. No customer names, product examples, order history, or independently verifiable case details are provided.