Custom 7s 25.2V 70ah Lithium-Ion Battery Module with BMS – EV18650L Cells for EV / Robot / Solar / Medical / Power Supply

• Customization: Available
• Type: Lithium-Ion Battery Pack
• Connection Mode: Series and Parallel
• Model NO.: EV18650L 7S1P 25.2V 70.56Ah
• Rechargeable: Chargeable
• Discharge Rate: Low Discharge Rate
• Size: Large
• Accessories Type: Battery
• Rated Capacity: OEM
• Standard Voltage: OEM
• Usage: OEM
• Electrolyte: Li-ion
• Transport Package: Carton
• Specification: OEM
• Trademark: EVVA/OEM
• Origin: China
• HS Code: 8507600090
• Production Capacity: 500000pieces/Year

Product Description

Specification

Model	EV18650L-7S1P
Cell Type	18650 Lithium-ion (EV18650L)
Cell Configuration	7S1P (7 cells in series, 1 parallel)
Nominal Voltage	25.2V
Nominal Capacity	70.56Ah
Nominal Energy	1778Wh (25.2V × 70.56Ah)
Battery Chemistry	Li-ion (likely NCA or NCM)
Max Continuous Discharge	Typically 1C (~70A), depends on cell spec
Charging Voltage	29.4V (4.2V × 7S)
Discharge Cut-off Voltage	~19.6V (2.8V × 7)
Dimensions	Customizable
Weight	Varies based on casing and BMS
Cycle Life	>1000 cycles (at 80% DoD)
BMS	Optional, recommended for protection
Applications	E-bikes, medical carts, robots, energy backup, solar systems

Company Profile

EVVA TECHEVVA

Welcome to EVVA Technology — your expert in custom battery solutions, backed by over 20 years of manufacturing experience. 
 
At our 6,000 square meters facility, our factory is equipped with latest automatic production line to ensure top-quality and efficient manufacturing.

Our professional team has decades of experience in battery design, battery manufacturing, BMS development, and system integration

With an ISO 9001:2015 certified factory and strict quality control, our team ensures every battery meets CE, UN38.3, RoHS,UL and other global certification standards.

Production Line

Skilled Team

Our people here have possesed rich experience and professional skills on Lithium ion battery pack manufacturing for 20 years. 

Automatic Production Line

our factory is equipped with latest automatic production line to ensure top-quality and efficient manufacturing.

Warehouse & Laboratory & Testing

A Grade Cells

All cells we use are original A Grade from Samsung,Panasonic/Sanyo, LG Chem, Murata/Sony, Lithiumwerks, Molicel etc., quality guaranteed 

Certifications

FAQ

why choose us

A. Is your battery quality approved?
Q: Yes, we guarantee that all cells are 100% original from Lithiumwerks, Molicel, Panasonic, Samsung, LG and Murata. And we will have full inspection of each cells and grouping them before assembling into battery packs. And all finished battery packs will be under a full inspection before shipment
A: How can you prove that your cells you use are 100% original?
Q: We can show you the original pack list, outgoing inspection report and other related documents issued by these manufacturers.
A: Are you a factory? What kind of service do you provide?
Q: Yes, we have a own factory with a team of employees in the field of Lithium batteries for over 20 years. We provide OEM, ODM service for battery packs. Quality is strictly controlled under ISO 9001: 2015.
A: What certifications do you have?
Q: We have obtained ISO 9001: 2015 for quality management system. And have CE, ROHS, CB, UN38.3, MSDS for several batteries. If for OEM battery packs, we can help customers do certification if there is a need.
A: what is your lead time if I placed an order?
Q: For all products in stock, our lead time is within 2 working days after payment received. For thoese that we don't stock for the moment such as customized battery packs, the lead time is around 10-15 days.
A: What is the payment methods?
Q: We accept T/T wire transfer, trade assurance and paypal. 
A: What is your warranty?
Q: We guarantee the quality before the item is shipped. You can enjoy 30-day free refund, 4-month free replacement, and lifetime maintenance service from the date of delivery. Any damages caused by improper use are not covered by our warranty.