21700-33M Electric screwdriver battery

Product Features:

5C High Rate Continuous Discharge

8C High Rate Non-Continuous Discharge

Applicable to: Power Tools, Electric Garden Tools, etc.

CE, UL 1642, FCC, IEC 62619, CB, BIS, PSE, 3C (CCC)

Application Areas:

Power Tools
Electric Garden Tools
Hair Clippers

Parameter：

Nominal Voltage	3.6V
Nominal Capacity	3300mAh
Internal Resistance (IR)	≤ 22mΩ
Net Weight	66.5g
Max Continuous Discharge Rate	5C
Max Non-continuous Discharge Rate	8C
Cycle Life (80% DoD)	👉 THIS CELL FULL SPECIFICATION SHEET
Operating Temperature (Cell Surface)	Charge: 0~50°C Discharge: -20~80°C
Certifications	UL, FCC, CE, RoHS, EU Battery Regulation, IEC, CB, CCC, BSMI, BIS, PSE, MSDS, UN38.3
Daily Production	250,000 PCS

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An electric screwdriver battery is a rechargeable lithium-ion power source designed to deliver stable high-current output for cordless screwdrivers and handheld power tools. It plays a critical role in determining tool performance, including torque strength, runtime, charging efficiency, and durability.

Key Requirements for Electric Screwdriver Batteries

Electric screwdrivers require batteries that can support instant torque output and continuous operation under load. The key performance requirements include:

High discharge current for strong torque output
Stable voltage during operation
Fast energy release for startup power
Long cycle life for frequent use
Compact size for ergonomic tool design

Why 21700-33M battery Is Ideal for Electric Screwdrivers

Electric screwdrivers require instant torque, stable discharge, and compact energy design. The 21700-33M battery is optimized to meet these requirements by providing:

Strong burst current for startup torque
Stable voltage under load
Reduced energy loss during operation
Improved tool efficiency and runtime

This makes it a preferred solution for professional cordless tools and industrial-grade screwdrivers.

21700-33M vs 18650 Power Tool Battery

Feature	18650 Battery	21700-33M Battery
Capacity	Lower	Higher
Power output	Moderate	High discharge capability
Runtime	Shorter	Longer
Heat performance	Standard	Improved thermal stability
Tool performance	Basic tools	Professional power tools

Safety and Reliability

The JOINSUN 21700-33M battery is designed with stable lithium-ion chemistry and strict manufacturing control to ensure safe operation. When integrated into a battery pack with a Battery Management System (BMS), it provides protection against:

Overcharge
Over-discharge
Overcurrent
Short circuit
Overheating

The 21700-33M electric screwdriver battery delivers an excellent balance of high power output, long runtime, and stable performance, making it a reliable choice for modern cordless power tools.Get electric screwdriver battery PRICE

Product Differentiation/Why Choose Joinsun:

01

Source Factory

With comprehensive services and quality assurance, employing cutting-edge technology and high-end materials to provide a longer average lifespan.
02

Professional Team and Advanced Production Equipment

A research and development team of over 30 people with 24 related patents. The company covers an area of 100 acres, equipped with 8 advanced coating production lines, 3 fully automated injection lines, 10 sets of fully automatic sheet winding machines, 6 fully automatic integrated welding production lines, etc., meeting the production capacity demand of 20GWh per day, ensuring product efficiency and quality.
03

Sales Network and Services

Jixin Technology has established offices in East China, South China, and an overseas affairs department, with sales networks gradually expanding to cover the Middle East and Southeast Asia regions. Striving to become a leading supplier in the power battery and energy storage lithium battery markets, providing comprehensive service and support.
04

High Cost-Effectiveness

Joinsun products provide high value for their cost.

Industrial Packaging That Can Be Customized According to Requirements.

Warranty: 1 Year and provide warranty and replacement service within a certain period of time to ensure the interests of customers.

Notes: Please strictly follow the instructions provided in the product manual.

Customer Feedbacks

JOINSUN battery packs a powerful punch. lt has never failed to provide enough energy to keep our devices running smoothly. From our smartphone to my portable speakers, this battery has got it covered.

Jacob

JOINSUN has provided us with customized lithium battery solutions for our energy storage systems. Their batteries are UL and CE certified, ensuring safety and reliability. Fast shipping and great customer support!

John

We needed custom lithium battery packs for our electric bikes, and JOINSUN delivered exactly what we wanted. Their R&D team helped optimize the design, and the production was quick. Definitely our go-to supplier for long-term cooperation!

Sarah

We've been sourcing 18650 and 21700 battery packs from JOINSUN for over a year. The battery quality is excellent, with stable performance, high capacity, and long cycle life. Their team is very professional and responsive. Highly recommended!