18650 21700 3.7V 7.4V 11.1V 14.8V 18.5V Li Ion Lifeo4 Battery Pack

• Customization: Available
• Type: Lithium-Ion Battery Pack
• Connection Mode: Series and Parallel
• Model NO.: customized
• Rechargeable: Chargeable
• Discharge Rate: Customized
• Size: Customized
• Accessories Type: Battery
• Rated Capacity: 25ah(Customized)
• Standard Voltage: 3.7V 7.4 V 11.4V 14.8V 18.5V(Customized)
• Usage: Toys/Power Tools/Home/Consumer Electronics
• Electrolyte: Li-ion
• PCM/BMS: with or Without
• Cell Origin: From Samsung, Panasonic, Murata etc.
• Cycle Life: More Than 1000 Times
• PCM Protected: Yes
• Supply Ability: 50000 Piece/Pieces Per Month
• Connecotr: Customized
• Transport Package: Pack
• Specification: customized
• Trademark: EVVA/OEM
• Origin: Guangdong
• Production Capacity: 5000 Pieces/Year

Product Description

Product Features

*High Reliability
Featuring A-Class, top-tier cells for excellent balance, long cycle life.

* High Energy Density
Achieve long lasting power supply based on limited space and light

 weight.

* Outstanding Performance
Provides high power delivery, ensuring consistent energy output in

the most demanding marine conditions.
* Efficient Thermal Management Supports multiple cooling methods, preventing thermal runaway and ensuring stable performance during

high-current use.
*Environmentally Friendly
Designed with sustainable materials to meet environmental standards,contributing to cleaner marine operations.

Specification

Items	Specifications
Battery Type	LiPo/LiHV/Smart Battery/NMC
Item	3.7V 7.4V 11.2V 14.8V 18.5V Li-ion Battery Pack
Application	Toys/Power Tools/Home Appliance/Boats/Consumer Electronics/E-Bike/E-Scooter
Battery Size	18650/21700/26650 etc.
Brand	EVVA
Anode Material	NCM
Warranty	1 Year
Cell Origin	from Samsung, Panasonic, Murata etc.
Max Discharge Rate	Customized
Capacity	About 2500mAh(customized)
Operating Temperature Range(C)	-30C-60C
Rechargeable	Yes
Supply Ability	50000 Piece/Pieces per Month
Weight	Customized
Dimension	Customized
Cycle Life	More Than 1000 Times
Certification	CE/ROTH/MSDS/UN38.3

Company Profile

Production Line

Packaging & Shipping

Laboratory&Testing&Warehouse

Certifications

FAQ

Q1: Are your battery quality approved?‌
‌A:‌ Yes, we guarantee all cells are 100% original from Lithiumwerks, Molicel, Panasonic, Samsung, LG, and Murata. Before assembling into battery packs, each cell undergoes comprehensive inspection and grouping. All finished battery packs are fully inspected before shipment46.
 
‌Q2: How can you prove the cells you use are 100% original?‌
‌A:‌ We can provide original packaging lists, factory inspection reports, and other relevant documents issued by these manufacturers34.
 
‌Q3: Are you a factory? What services do you provide?‌
‌A:‌ Yes, we operate our own factory with a team experienced in lithium batteries for over 15 years. We offer OEM and ODM services for battery packs, with quality strictly controlled under ISO 9001:2015 standards56.
 
‌Q4: What certifications do you hold?‌
‌A:‌We hold ISO 9001:2015 for quality management systems. Our batteries are certified with CE, RoHS, CB, UN38.3, and MSDS. For OEM battery packs, we assist clients in obtaining necessary certifications45.
 
‌Q5: What is your lead time if I place an order?‌
‌A:‌ For stock products, delivery is within 2 business days after payment confirmation. Custom battery packs require approximately 10–15 days for production58.
 
‌Q6: What payment methods do you accept?‌
‌A:‌ We accept T/T (Telegraphic Transfer), Trade Assurance, and PayPal8.
 
‌Q7: What is your warranty policy?‌
‌A:‌ We guarantee pre-shipment quality. From the delivery date, we offer a 30-day free refund, 4-month free replacement, and lifetime repair service. Damage due to improper use is not covered.