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Wholesale 21700 Lithium Battery 3.7V 5000mAh Cell for Solar Energy Storage Electric Tools
US$1.58-2.42
800 Pieces
Product profile
Customization
AvailableType
Li-ion BatteryCathode Material
NCMModel NO.
CNS-3.7V5000mAhRechargeable
YesSize
SmallOEM
YesCertificate
ISO9001, CE, RoHS, Un38.3Charging Voltage
3.7VOperation Temperature Range
-20~60℃Cycle Life
800timesWeight
46gTransport Package
Export CartonSpecification
21*70mmTrademark
CNSOrigin
ChinaHS Code
85071000Production Capacity
20000 Pieces/WeekKey features
High Capacity Cell: 5000mAh capacity with 3.7V nominal voltage for reliable power supply.
Long Cycle Life: Endures up to 800 charge-discharge cycles for extended durability.
OEM Customization: Supports logo printing on battery cover and custom packaging solutions.
Certified Quality: Meets ISO9001, CE, RoHS, and UN38.3 safety standards.
Factory Direct Supply: Direct from manufacturer since 2011 ensuring cost-effective pricing.
100% Pre-delivery Test: Every unit undergoes rigorous testing before shipment to ensure quality.
Low Self-discharge: Extremely low self-discharge rate maintains charge during storage.
Company profile
Business Type: Manufacturer/FactoryExport Year: 2019-07-14Nearest Port: Shanghai port, Shenzhen, QingdaoAverage Response Time: ≤4.22hTerms of Payment: T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, FAS, DAP, CPT, FCA
AI-Powered supplier vetting
SummaryHenan Cns Energy Technology Co., Ltd. is identified as a China-based manufacturer/factory producing lithium batteries, primary batteries, lead-acid batteries, brushless DC motors, and related battery systems. The supplier demonstrates broad customization capability, substantial stated production quantities, exports to multiple regions, and lead times within 15 working days in both peak and off-season. However, it does not provide 3D software design services or SDKs, has fewer than five quality-control staff, lacks a factory environmental impact assessment report, and has no written procedures or records for service assessment, corrective actions, or complaint handling. The provided information does not establish certification holdings, customer cases, or sufficient evidence of financial strength.
Supplier typeThe supplier is explicitly identified as a manufacturer/factory, organized as a limited company in Henan, China. Its stated product scope includes lithium batteries, primary batteries, lead-acid batteries, and brushless DC motors, with no indication that it belongs to a larger corporate group.
After-Sales capabilityThe supplier accepts several quotation and payment terms and reports service-related supplier information, but it has no written procedures or records for service assessment, corrective and preventive actions, or effective customer-complaint handling. This is explicit evidence of a service-management deficiency.
Production capacityThe supplier reports production of home energy storage systems, car-start lead-acid batteries, lithium battery packs, lithium cells, and Li-ion batteries, including 500,000 home energy storage sets, 500,000 car-start batteries, and 200,000 lithium battery packs. It also states lead times within 15 working days in both peak and off-season, supporting a positive production-capability assessment, although fewer than five quality-control staff is a stated control limitation.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These repeated entries provide direct evidence of broad customization capability.
Product Q&A
Q:What are the terms of payment?
A:
30% deposit in advance, 70% balance against goods ready. We show photos of products and packages before you pay the balance.
Q:Can you print my logo on the battery?
A:
Yes, OEM is available. We can print your logo on the battery case if you provide the logo file.
Q:How should I maintain the battery?
A:
Store in a clean, dry, ventilated, dark environment. Keep it fully charged and recharge every 3 to 6 months when not in use.
Q:What are the signs of a failed battery?
A:
Indications include lower performance, low voltage, inability to charge/recharge, swelled container, or acid corrosion.
Q:How can I tell if a battery is good or bad?
A:
Check for physical defects like broken circuits or containers. If no outward issues, use known measuring techniques to check capacity.
Send Inquiry
*To:Henan Cns Energy Technology Co., Ltd.
Henan Cns Energy Technology Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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