LG Mj1 Powered Robot Battery – Long Runtime 18650 Battery Pack for Robotics Systems

• Customization: Available
• Type: Lithium-Ion Battery Pack
• Connection Mode: Series and Parallel
• Model NO.: LG 18650/21700 for robot battery
• 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

Product Description

Specification

Cell Type	Lithium-ion Rechargeable Cell
Model	LG INR18650MJ1
Form Factor	18650 Cylindrical
Nominal Voltage	3.63V
Typical Capacity	3500mAh
Minimum Capacity	3400mAh
Charging Voltage	4.2V ± 0.05V
Standard Charge Current	0.5C (≈ 1.75A)
Max. Continuous Charge	1C (3.5A)
Max. Continuous Discharge	10A (with temperature cut-off ~75°C)
Cut-off Voltage	2.5V
Internal Resistance	≤ 40 mΩ (typical, measured at 1kHz)
Weight	≈ 48.0g
Diameter	18.3 ± 0.1 mm
Height	65.0 ± 0.2 mm
Cycle Life	~400 cycles (≥70–80% capacity retention)
Operating Temperature	Charge: 0°C to 45°C Discharge: -20°C to 60°C
Storage Temperature	-20°C to 50°C (short-term); < 25°C (long-term)
Protection Circuit (BMS)	Not included — external BMS required

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

Packing & Delivery

FAQ

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.