21v Power Adapter
Overview
Product sourcing insights & recommendations
The 21V power adapter market is a high-growth niche projected to reach $53.76 billion by 2026 as part of the broader power supply sector. Mordorintelligence These adapters are specialized for 5S Lithium-ion battery charging in power tools and high-precision CCTV surveillance systems, where they effectively mitigate voltage drops over long cable runs. AlibabaYoutube Current market pricing ranges from $2.25 to $6.00, with a strong shift toward GaN technology and energy efficiency compliance (DOE Level VI). MordorintelligenceAlibaba
The detailed report below covers technical specifications, growth drivers, and a sourcing analysis of top-performing products and suppliers.
Based on the 2026 market trends, here are your next steps:
21v Dc Power Adapter 1a 2a 5.5x2.1mm Lithium Battery Charger
Products · Top picks & verified manufacturers
Kingsyuan 21V2A Lithium Battery Charger AC 100-240V Input DC 8.4V/12.6V 1-5A Output 5.5x2.1mm Power Jack Socket Female
Shantou Jinshiyuan Electric Appliance Co., Ltd.🇨🇳CN3 yrs
21V 1A Universal Lithium Battery Charger AC/DC Adapter Power Supply Cord Switching Transformer for Infant Monitor CCTV Cameras
Shenzhen Kabbol Technology Co., Ltd.verified🇨🇳CN13 yrs
Factory Custom 21V1A1.5A2A Lithium Battery Charger Massager Power Tool Charger
Foshan Guangyuanxing Electronics Co., Ltd.🇨🇳CN6 yrs
5w-240w lithium charger 21v 3a li-ion charger 21v power adapter 21v 1a 5a 2a charger ac dc power supply
SHENZHEN SUNSHINE TECHNOLOGICAL CO., LIMITEDverified🇭🇰HK4 yrs
Etl Fcc Approval Ac to Dc 21v Lithium Battery Ac to Dc Charger 21v 1a 1.5a 2a Lithium Battery Charger for Cordless Drill 21v
Shenzhen Sanbvie Electronics Co., Ltd.🇨🇳CN3 yrs
High Quality 4.2V 8.4V 9V 12.6V 15V 16.8V 21V 24V 29.4V 1A 2A 3A US EU Plug Red to Green Battery Charger for Lithium Battery
Shantou Yuzhou Electronic Electrical Co., Ltd.verified🇨🇳CN1 yr
21V2A 1A Constant Voltage Constant Current Wall Plug-in 5-Series 18.5V Polymer 21V2A 1A Lithium Battery Charger Power Adapter
Shantou City Chaonan District Simapu Hongweifeng Electrical Appliance Factory🇨🇳CN2 yrs
Universal Li-ion Charger AC 110-240V DC 4.2V 8.4V 12.6V 16.8V 21V 29.4V 1A 2A DC Power Supply Adapter for 18650 Lithium Battery
Shenzhen Qinda Electronics Co., Ltd.🇨🇳CN7 yrs
5w-240w Lithium Charger 21v 3a Li-ion Charger 21v Power Adapter 21v 1a 5a 2a Charger Ac Dc Power Supply
Shenzhen Sunshine Technological Co., Ltd.🇨🇳CN15 yrs
DC 16.8V 1A 2A Electric Power Supply Adapter Lithium Ion Battery Charger with OTP Protection SAA RCM Certified
Shenzhen Mingxin Power Technologies Co., Ltd.🇨🇳CN14 yrs
21V1A Lithium Battery Charger for 5-String 18650 Polymer Electric Drill Car Washer Charger LED Light Plug-In Power Tool
Jieyang Yineng Electronics Co., Ltd.🇨🇳CN2 yrs
Electric Lithium-ion Battery Charger AC 100-240V DC 21V 2A 42W Type-C ABS Power Adapter with LED Illumination
Shenzhen Yinghui Yuan Electronics Co., Ltd.verified🇨🇳CN17 yrs
Lithium Battery Power Adapter AC EU US UK AU Charger Adapter 4.2V3A 12.6V2A 21V 1A 5.5*2.5MM Wall Charger Power Supply
Shantou Bmax Technology Co.,Ltd🇨🇳CN6 yrs
16.8V 2A 21V 1A 12.6V 1.5A 8.4V 2A 12.6V 2A 18650 Lithium Battery Charger 110-220V Lithium Li-ion Battery Wall Charger
Shaanxi Fullstar Power Co., Ltd.verified🇨🇳CN5 yrs
Desktop 8.4V 12.6V 14.6V 16.8V 21V Power Charger Adapter 1A 2A 3A 4A 6A 8A 10A Built Fan Lithium Phosphate Battery Charger
AC-DC 21V 3A Li-ion Battery Charger for 5S 18650 PC Material Desktop Use
Shenzhen Bolihong Electronic Co., Ltd.🇨🇳CN8 yrs
5v 9v 17v 18v 21v 24v Ac Power Adapter 300ma 350ma 1a 2a 3a 3.5a 17v Ac 21v 1a Power Adapter 12v Power Supply
Shantou Chuangkesheng Electronic Technology Co., Ltd.verified🇨🇳CN9 yrs
Ukca 21V 1.5A 15W-33W DC Power Adapter for Tablet Laptop PC UK Plug Plug in
Shenzhen Hua Yi Teng Technology Co., Ltd.verified🇨🇳CN12 yrs
5V 9V 12.6V 16.8V 21V 1A 2A Lithium Battery 12V Power Adapter Charger 100-240V AC Input for Children's Toy Cars Electric Drills
Shenzhen Entway Electronic Components Co., Ltd.🇨🇳CN4 yrs
21V 2A Safe Lithium Battery Charger Power Supply Adapter with LED Indicator Light
Wenzhou Toolpart Trade Co., Ltd.verified🇨🇳CN11 yrs
Auto Battery Charger 21v 2a Lithium Ion Battery Charger High Quality Battery Chargers
Dual Output 21V 2A 500W Power QC3.0 Fast Charging Desktop Lithium Battery Charger Adapter Multiple Models Fast Charging
Shantou Xinyihang Electronics Co., Ltd.🇨🇳CN2 yrs
9V 12V 2A CCTV Camera Power Adapter 18V 24V 1A LED Strip Ac Dc Adapter 12.6V 16.8V 21V 1.5A 1A 2A Lithium Battery Charger
Shenzhen Autop Technology Co., Ltd.🇨🇳CN10 yrs
For 12.6V 1A AC DC Power Adapter Lithium Battery Charger Plug-in 1.5m Cable 88% Efficiency 100-240V Input 50-60Hz 3 Years
Foshan Shunde Guanyuda Power Supply Co., Ltd.verified🇨🇳CN15 yrs
Portable AC DC 5V 6V 7.5V 9V 12V 1A 1.5A 2A Adapter Travel Power Supply Universal Car Charger With 2.5mm Tip
Shenzhen Jianyuan Technology Co., Ltd.🇨🇳CN6 yrs
Factory Wholesale Switching Power Supply Lithium Battery 21V 12V Charger Professional Adapter
Nantong Pengyou Electromechanical Tools Co., Ltd.🇨🇳CN2 yrs
29.4 V1.2a Lithium Ion Battery Charger AC100-240V Li-ion Power Adapter for 7S Lithium Battery Pack
Shantou Chaonan District Simapu Jutai Electrical Appliance Factory🇨🇳CN3 yrs
Universal Power Adapter AC 100-240V DC 21V 1.5A Lithium-ion Battery Charger for Cordless Drill 21v Lithium Battery
Shenzhen Sritec Technology Co., Ltd.🇨🇳CN9 yrs
Charger 4.2V 8.4V 12.6V 16.8V 1A 2A 2000ma AC/DC Adapter Power Supply 110-220V for 1S 2S 3S 4S 18650 Li-ion Lithium Battery Pack
Shenzhen Shengdingtong Technology Co., Ltd.verified🇨🇳CN1 yrCharger 4.2V 8.4V 12.6V 16.8V 1A 2A 2000ma AC/DC Adapter Power Supply 110-220V for 1S 2S 3S 4S 18650 Li-ion Lithium Battery Pack
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Sources & References
27 sources cited · Verified industry data & reports
How to Choose a 21V DC Adapter – Practical Guide
Alibaba.com
Common applications include: Security and CCTV systems: Many dome cameras, PTZ units, and DVR/NVR power distribution modules use 21V as a mid ...
What Is a Power Adapter? Complete Guide to Types, ...
qinxpsu.com
Power adapters are essential components used to convert electrical power into a form that electronic devices can safely use.
Can I use 21V 2Amp on 12V 4A devices?
Quora
Can I use 21V 2Amp on 12V 4A devices?
Can I use a 20V or 24V to power up a piano that needs 21V?
Electrical Engineering Stack Exchange
This question already has answers here: Choosing power supply, how to get the voltage and current ratings? (6 answers) Closed 8 years ago. The ...
Amazon.com : 21V 1A Universal Lithium Battery Charger ...
Amazon.com
Application: Suitable for battery packs, beauty equipment, floor sweepers, aerial photography aircraft, medical equipment, etc
Is 21V good for PD charger? : r/UsbCHardware
Reddit · r/UsbCHardware
Hi everyone, I recently bought a projector that works with 9V and 2A UsbC powerbank, but it dims the light by 50%, the working voltage via AC to DC is ...