Powerbank 21700
Overview
Product sourcing insights & recommendations
I have completed a comprehensive market analysis of the 21700 power bank segment, covering forecasts through 2031, technical comparisons with 18650 cells, and emerging semi-solid-state technology. The global market is projected to reach USD 31.97 billion by 2031, with a strong shift toward high-capacity (20,000mAh+) and high-wattage (65W-170W) units using 21700 "Tesla-standard" cells.
Key trends include the rise of modular DIY kits and ultra-slim semi-solid-state packs, which offer a 30-40% reduction in weight. The detailed report below includes specific product benchmarks, supplier hotspots in Shenzhen and Dongguan, and actionable sourcing strategies.
I've synthesized the market analysis for 21700 power banks. You can further explore:
Magnetic Wireless Power Bank 21700 Battery
Products · 3 lists
Wholesale CCC 10000mah Portable Power Banks Private Model Custom Logo Fast Charging for Mobile Phone Magnetic Wireless Powerbank
Dongguan Guitong Electronic Technology Co., Ltd.verified🇨🇳CN5 yrs
Free Sample NEEXXT T6 Magnetic 3 in 1 10000mAh High Capacity Portable PD20W Fast Charging Dual Cable Wired Wireless Power Bank
Shenzhen Litian Digital Technology Co., Ltd.🇨🇳CN6 yrs
Private Mold New 65W 10000mAh Plastic Power Bank Wireless Charging Magnetic Design 21700 Battery Quick Charge Support National
Shenzhen Golden Wolf Intelligent Electronics Co., Ltd.🇨🇳CN1 yr
New Magnetic 3-in-1 5000mAh Fast Charging 10W Wireless Power Bank for iPhone & Android Portable Battery Charger
Shenzhen Toptai Technology Co., Ltd.verified🇨🇳CN20 yrs
10000mAh Magnetic Power Bank 22.5W PD Fast Charging Wireless Portable Charger Digital Display 21700 Battery USB C Power Bank
Shenzhen Youmei Electronics Co., Ltd.🇨🇳CN8 yrs
Magnetic Wireless Power Bank 20W PD Fast Charging Portable Outdoor Travel Charger 10000mAh Polymer Battery Pack Foldable Stand
Shenzhen Sam Technology Co., Ltd.verified🇨🇳CN10 yrs
Magnetic Wireless Power Bank with Wire 5000 MAh Mobile Power Supply External Battery Pack with USB-C Charging Cable for iWatch
Shenzhen Mgctech Co., Ltd.🇨🇳CN9 yrs
21700 Battery Bank 10000mAh Magnetic Wireless Power 22 5W PD Fast Charging Digital Display Portable USB C Charger
Shenzhen Kingstar Technology Co., Ltd.verified🇨🇳CN10 yrs
Original Manufacturer Cross-border Built-in Retractable Cable Fast Charging 20W 5000mAh LED Holder Wireless Magnetic Power Bank
Shenzhen Funxim Innovation Technology Co., Ltd.🇨🇳CN10 yrs
New Mini Magnetic Wireless Power Bank Built in Detachable Type C Cables 22.5W PD Fast Charge for iPhone Travel Outdoor Emergency
Jiangxi Zhongzefu E-Commerce Co., Ltd.🇨🇳CN3 yrs
Phone & IWatch Wireless Charging Magnetic Battery Pack PD140W 6 in 1 25000mAh Large Capacity Powerbank Two-way USB-C Power Bank
Custom Logo 10000mAh Magnetic Power Bank 22.5W Fast Charging Digital Display 21700 Battery Portable Charger Wireless Powerbank
Shenzhen Kingstar Mould Co., Ltd.verified🇨🇳CN19 yrs
Custom Logo Mobile Phones Magnetic Power Bank Fast Charging Wireless Charger Power Banks
Shenzhen Sinhao Electronic Technology Co., Ltd.🇨🇳CN4 yrs
New Five-in-One Magnetic Wireless Super Fast Charging 20000mA Type-C 22.5W 21700 Lithium Battery 300g Portable Power Bank AC
Dongguan Changde Technology Co., Ltd.🇨🇳CN2 yrs
10000mAh Magnetic Power Bank 22.5W PD Fast Charging Digital Display 21700 Battery Portable Wireless Charger Custom Logo
Dongguan Qiandao Electronic Technology Co., Ltd.🇨🇳CN12 yrs
10000mAh Magnetic Power Bank 22.5W Fast Charging Digital Display Wireless Portable Charger with 21700 Battery for Phone
Shenzhen Kingstar Network Technology Co., Ltd.🇨🇳CN7 yrs
10000mAh Magnetic Power Bank 22.5W PD Fast Charger Digital Display 21700 Battery Wireless Portable Charger for Phone
Shenzhen Kingstar Electronic Commerce Co., Ltd.🇨🇳CN8 yrs
2026 Trending Wireless Magnetic Power Banks Fast Charge Wireless Magnetic Power Bank 20000mah
Dongguan Hasengwe Technology Co., Ltd.verified🇨🇳CN5 yrs
New Trending Outdoor Portable Wireless Magnetic Power Bank PD 22.5W Fast Charging 20000mAh Power Bank for iPhone
Shenzhen XRJN Technology Co., Ltd.verified🇨🇳CN6 yrs
New Technology 2026 Fst Charging 10000 Mah 5000 Mah Transparent Magnetic Wireless Power Bank
Shenzhen Hopepower Technology Co., Ltd.🇨🇳CN12 yrs
2026 New Trending Super Slim Magnetic Wireless Power Bank Full Capacity Portable Phone Battery Charger 5000 Mah Power Banks
Shenzhen Zhongxinli Electronic Technology Co., Ltd.🇨🇳CN14 yrs
Magnetic Power Bank Battery Pack with PD 22.5w 10000mAh Wireless Portable Charger
ABC (Shenzhen) Electronics Co., Ltd.verified🇨🇳CN12 yrs
Best Sale Support Quick Charge Magnetic Wireless Charger for Outdoor Power Bank 5000mAh 10000mAh Can Be Customized
Shenzhen E-Teck Offer Technology Co., Ltd.verified🇨🇳CN11 yrs
Hot Selling Wireless Charging Magnetic Aluminium Alloy Metal Power Bank Smallest Power Bank 5000mAh
20000mAh Magnetic Power Banks Portable 22.5W Fast Charge Power Bank 15W Wireless PowerBank with Phone Holder ASPOR A386
Guangzhou Aspor Electronics Co., Ltd.verified🇨🇳CN4 yrs
High Quality Pd 22.5w 10000mah Portable Powerbank With Mobile Holder Magnetic Wireless Charge Type C Power Bank
Shenzhen Istyle Technology Co., Ltd.verified🇨🇳CN14 yrs
JOYROOM 10000mah Wireless Magnetic Portable Power Bank Magnetic Wireless 22.5w Fast Charging Powerbank for Iphone
Shenzhen Nito Power Source Technology Co., Limitedverified🇨🇳CN12 yrs
4 in 1 Mini Mobile Magnetic External 5000mah 10000mah Wireless Charger Power Bank Battery Pack Powerbank for Phone 15 14 Pro Max
Shenzhen Aixun Technology Co., Ltd.🇨🇳CN5 yrsJOYROOM 10000mah Wireless Magnetic Portable Power Bank Magnetic Wireless 22.5w Fast Charging Powerbank for Iphone
4 in 1 Mini Mobile Magnetic External 5000mah 10000mah Wireless Charger Power Bank Battery Pack Powerbank for Phone 15 14 Pro Max
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Sources & References
17 sources cited · Verified industry data & reports
20000mAh Slim Power Banks: The Complete B2B ...
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10-K: Annual report [Section 13 and 15(d), not S-K Item 405]
Amprius Technologies
The cylindrical cell form factors offer balanced energy and power capabilities providing an industry leading capacity of 4Ah in 18650 format and 6.5 Ah in 21700 ...
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Power Bank Market was valued at USD 14.03 Billion in 2024 and is projected to reach USD 28.36 Billion by 2032, growing at a CAGR of 9.20% from ...