Can I have a sample order?

Yes, samples are welcome. We offer free samples for orders under 3 pieces; you only pay shipping.

How to solve the quality problems after sales?

Send photos/videos and the defective battery. Our engineers analyze within 2 working days. We offer a 1-year warranty with free repair or replacement for non-human factor defects.

How's your lead time?

Sample lead time is 3-5 days, and large quantity lead time is 7-10 workdays.

What kind of certificates could you provide for these batteries?

We provide CE, CB, KC, MSDS, and UN38.3. For custom designs, we can apply for certificates with fees refundable on large orders.

Can your factory print our logo/brand on the product?

Yes, we offer free logo printing for large order quantities. Please contact us for details.

Can you make customized battery?

Of course. Our professional engineers provide suitable solutions based on your special requirements.

Storage Lithium Battery Cell 12V 40ah Rechargeable Solar Lithium Ion Battery Pack for UPS Storage

Name: Storage Lithium Battery Cell 12V 40ah Rechargeable Solar Lithium Ion Battery Pack for UPS Storage
Brand: Shenzhen Resky Electronics Co., Ltd.
SKU: 712755862

Guangdong, ChinaShenzhen Resky Electronics Co., Ltd.

US$150.00-170.00

10 Pieces

Sample price:US$200.00/piece.Request sample

Product profile

Customization

Available

Type

Lithium-Ion Batteries

Usage

Car, Bus, UPS, Electric Power, Lighting, Electric Bicycle

Model NO.

RSK-1240

Nominal Voltage

12V

Discharge Rate

Medium Discharge Rate

Shape

Square Battery

Electrolyte

Li-ion

Installation

Packaged

Rechargeable

Chargeable

Cells

10ah Battery Cells

Structure

3s4p

Motor Power

500W

Charging Cut-off Voltage

12.6V

Charging Current

10A

Dishcarging Cut-off Voltage

Continuous Discharging Current

20A

Max Discharge Current

40A

Weight

Approx 5kg

Lead Time

Within 15 Workdays

Shipping

UPS, DHL, FedEx, TNT, by Air, by Sea

Certification

CE, RoHS, MSDS, Un38.3

Connection Mode

Series and Parallel

Rated Capacity

40ah

Standard Voltage

12V

Transport Package

Standard Exporting Package

Specification

12V 40AH

Trademark

OEM

Origin

Shenzhen

HS Code

8507600090

Production Capacity

50000000PCS/Year

Key features

High Cycle Life: Supports over 500 charge-discharge cycles for long-term durability.

Customizable Solutions: Professional engineers provide tailored packs, connectors, and protection systems.

Wide Application Range: Suitable for electric bikes, scooters, UPS, solar lighting, and emergency power.

Comprehensive Certifications: CE, RoHS, MSDS, and UN38.3 certified for safe global shipping and usage.

Fast Charging Capability: Supports rapid charge-discharge cycles with maximum continuous charge current up to 10A.

Strict Quality Control: 100% inspection before delivery including inner resistance and discharge platform checks.

Flexible Shipping Options: Available via UPS, DHL, FedEx, TNT, air, and sea freight.

Low Self-Discharge Rate: Maintains stable capacity with minimal energy loss during storage.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityFast DeliveryR&D Capabilities

Shenzhen Resky Electronics Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2012-09-09Nearest Port: SHENZHEN, HONGKONGAverage Response Time: ≤4.18hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others

AI-Powered supplier vetting

SummaryShenzhen Resky Electronics Co., Ltd. is identified as a China-based limited company with both trading and manufacturing/factory characteristics, offering electric vehicle batteries, lithium batteries, RC LiPo batteries, Li-polymer batteries, and chargers. It reports ISO 9001 certification, six to ten quality-control staff, stated annual lithium battery pack output of 2,000,000 sets, and broad export coverage. The supplier supports customization from designs and samples, full and flexible customization, and minor customization. Its R&D function includes one engineer responsible for customer-request confirmation, technical after-sales support, and new product development; relevant R&D audit documents are available, but no SDK is available. It reports OEM service for well-known brands, although no specific customer names or case details are provided. Financial records are indicated for 2021–2023, but the supplied slices do not provide sufficient financial metrics for a substantive credit assessment. An...

Supplier typeThe supplier is described as a limited company based in Shenzhen, China, with both "Trading Company,Manufacturer/Factory" characteristics in one record and "Trading Company" in another. Its stated business scope includes technical development, electronic and solar-energy products, polymer lithium batteries, domestic trade, and import/export activities, indicating a trading-led business with manufacturing/factory capability also reported.

CertificationsThe supplier reports ISO 9001 certification. A BV audit is also recorded, with an audit report period from January 30, 2024 to January 29, 2025; however, the supplied slices do not explain the audit result code or confirm that the certification remains current beyond that period.

After-Sales capabilityThe stated R&D engineer responsibilities include providing technical support for after-sales service, which is direct evidence of technical after-sales support. The supplier also reports in-stock service capacity, but the slices do not establish the breadth, response time, staffing level, or formal service process.

R&D capabilityThe supplier reports one R&D engineer responsible for confirming customer requirements, technical after-sales support, and new product development, and states that design-input, design-output, review, verification, and validation documents are available for audit. It also reports no available SDK, so the evidence supports basic product-development capability but does not establish broader software or platform innovation capability.

Production capacityThe supplier reports lithium battery pack output of 2,000,000 sets and in-stock service capacity, with six to ten quality-control staff and exports to multiple global regions. However, the status of any manufacturing-capacity contract is unknown, so contractual production assurance is not established.

Customization capabilityThe supplier explicitly reports customization from designs, customization from samples, full customization, flexible customization, and minor customization. This indicates a broad stated range of product adaptation services.

Client casesThe supplier states that it provides OEM services for well-known brands, which is evidence of experience serving branded customers. However, no customer names, product examples, order details, or verifiable case descriptions are supplied, so the depth and verifiability of its customer-case record cannot be assessed.

Product Q&A

Q:Will you use the battery on what product?

Please let us know the specific product application so we can recommend the correct model.

Q:Do you need Protection Board for the battery?

Yes, customized over current protection and temperature control protection are available.

Q:Do you need cable and connector for the battery?

Customized cables, connectors, and plugs are available upon request.

Q:May I know your continuous and peak discharging current?

Please specify your required continuous and peak discharging current for a tailored solution.

Q:How about payment and delivery items?

Payment via T/T (50% deposit, balance before shipment), PayPal, or Western Union. Delivery takes 3-5 days for samples and 7-10 workdays for large quantities.