High-Capacity Power Banks
for B2B & Wholesale
Stop worrying about battery safety. Our semi-solid-state power banks deliver zero thermal runaway risk with PD 3.1 fast charging up to 140W — purpose-built for brands that demand reliability at scale. From ultra-slim 5,000mAh pocket batteries to high-capacity 40,000mAh power stations with digital displays, every unit uses Grade A Li-polymer cells certified for 500+ charge cycles. We also manufacture 2-in-1 hybrid chargers combining a wall adapter and power bank in a single device, plus heating batteries for winter apparel. All products undergo strict UN38.3 and MSDS certification for 100% safe global shipping.
Our power bank lineup spans from ultra-slim 5,000mAh pocket batteries to industrial-grade 40,000mAh power stations with real-time digital displays and PD 3.1 140W output. We are one of the first manufacturers to deploy semi-solid-state battery technology, offering 30% higher energy density and zero thermal runaway risk compared to conventional Li-polymer cells. Every unit features 10-layer circuit protection, UN38.3 certification for air shipping, and 500+ cycle Grade A cells. Custom branding, packaging, and firmware available for OEM/ODM partners with MOQ 500+ units.
CE
FCC
RoHS
UN38.3
Fireproof
ISO
Why B2B Buyers Trust WOWOHCOOL
Since 2013, we've helped global brands launch successful power bank products. Here's what sets our manufacturing apart.
Manufacturing Excellence
Premium Grade A Cells
We use Grade A lithium-polymer cells with 500+ cycle life. We also offer semi-solid-state batteries for cutting-edge products. They are 50% thinner, 30% higher density, and safer.
10-Layer Safety Protection
Every unit has OVP, SCP, OTP, NTC and more. This protects your brand and customers.
2-in-1 Hybrid Chargers
Our popular hybrid line combines wall charger and power bank. Charge from the wall, then take power on the go. Multiple configurations available.
Airline-Ready Certifications
All products are UN38.3 and MSDS certified for air transport. Easy customs clearance to USA, EU, UK, Australia.
Production Capabilities
5000-40000
mAh Capacity
500+
Charge Cycles
140W
Max Output (PD)
UN38.3
Certified
Choose the Right Capacity for Your Market
Different markets need different capacities. Find the perfect balance of size, power, and price for your target customers.
Slim Series (5K-10K)
Ultra-slim profiles designed for everyday carry. Perfect for wholesale, promotional products, and travel accessories.
- 5,000mAh - 10,000mAh
- 10mm ultra-slim form factor
- Lightweight (150-200g)
- Budget-friendly for bulk orders
Mid-Range (15K-20K)
Balanced capacity for travelers and professionals. Powers multiple devices with fast charging support.
- 15,000mAh - 20,000mAh
- PD 45W-65W output
- Charge 2-3 devices simultaneously
- Airline carry-on approved
High-Power (27K-40K)
Maximum capacity for laptops and professional equipment. Ideal for power users and mobile workstations.
- 27,000mAh - 40,000mAh
- PD 3.1 140W output
- Charges MacBook and laptops
- Bulk wholesale pricing
Certified for Global Markets
All products undergo strict UN38.3 and MSDS certification for 100% legal and safe global shipping. CE, FCC, RoHS certified.
Semi-Solid-State Power Banks
Next-Gen Battery Technology | 36Wh - 72Wh
WOP09 Semi-Solid Power
Next-gen semi-solid-state battery power bank with 55W output. Built-in dual fast charging cables (Type-C + Lightning). 50% thinner, 30% higher energy density than traditional Li-Po (semi-solid-state battery manufacturer specifications). CES 2026 award-winning technology.
Specifications
| Battery Capacity | 10000mAh / 36Wh |
| Battery Type | Semi-Solid-State |
| Rated Capacity | 5800mAh (5V/2A) |
| Size | 9.1×5×3.1cm |
| Material | PC Shell |
| Type-C/C Cable Output | 5V/3A, 9V/3A, 10V/2.25A, 12V/3A, 15V/3A, 20V/2.75A (55W) |
| USB-A Output | 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A (22.5W) |
| Lightning Cable Output | 5V/3A, 9V/3A (27W Max) |
| Efficiency | ≥75% |
WOP10 Semi-Solid Power
Next-gen semi-solid-state battery power bank with 55W output. 20000mAh (72Wh) capacity with dual built-in fast charging cables (Type-C + Lightning). 50% thinner, 30% higher energy density (semi-solid-state battery manufacturer specifications). CES 2026 award-winning technology.
Specifications
| Battery Capacity | 10000mAh / 72Wh (Based on 7.2V) |
| Battery Type | Semi-Solid-State |
| Rated Capacity | 12000mAh (5V/2A) |
| Size | 9.7×6.1×3.6cm |
| Material | PC Shell |
| Type-C/C Cable Output | 5V/3A, 9V/3A, 10V/2.25A, 12V/3A, 15V/3A, 20V/2.75A (55W) |
| USB-A Output | 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A (22.5W) |
| Lightning Cable Output | 5V/3A, 9V/3A (27W Max) |
| Efficiency | ≥75% |
WOP26 Semi-Solid Pro
Next-gen semi-solid-state battery power bank with 45W output and triple retractable cables (Type-C1, Type-C2, Type-C3). 20000mAh (72Wh) capacity. 50% thinner, 30% higher energy density (semi-solid-state battery manufacturer specifications). CES 2026 award-winning technology.
Specifications
| Battery Capacity | 10000mAh × 2pcs / 72Wh |
| Battery Type | Semi-Solid-State |
| Rated Capacity | 12000mAh (5V/3A) |
| Size | 12.9×6.2×3.2cm |
| Material | PC + ABS |
| Type-C1/C2 Cable Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/2.25A (45W) |
| Type-C3 Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/2.25A (45W) |
| USB-A Output | 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A (22.5W) |
| Efficiency | ≥75% |
WOP27 Semi-Solid Max
High-power semi-solid-state battery power bank with 65W output and triple retractable cables (Type-C1, Type-C2, Type-C3). 20000mAh (72Wh) capacity powers laptops and multiple devices. 50% thinner, 30% higher energy density (semi-solid-state battery manufacturer specifications). CES 2026 award-winning technology.
Specifications
| Battery Capacity | 10000mAh × 2pcs / 72Wh |
| Battery Type | Semi-Solid-State |
| Rated Capacity | 12000mAh (5V/3A) |
| Size | 12.9×6.2×3.2cm |
| Material | PC + ABS |
| Type-C1/C2 Cable Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A (65W) |
| Type-C3 Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A (65W) |
| USB-A Output | 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A (22.5W) |
| Efficiency | ≥75% |
Heating Battery Series
For Heated Jackets, Vests, Socks, Gloves, Scarves | OEM/ODM
WOP55 Heating Battery
Specially designed for heated clothing including heated jackets, heated vests, and heated socks. 7.4V DC output provides stable power for heating elements. 14400mAh capacity for long-lasting warmth.
Specifications
| Size | 10 × 7.1 × 2.2cm |
| Material | ABS + PC |
| Color | Black |
| Battery Type | Li-Polymer |
| Capacity | 14400mAh / 55.44Wh |
| DC Output | 7.4V / 2.1A |
| USB-A Output | 5V/3A, 9V/2A, 12V/1.5A |
| Type-C Output | 5V/3A, 9V/2.22A, 12V/1.5A |
WOP50 Heating Socks Battery
Compact battery designed specifically for heated socks. Lightweight at only 54g. USB-C for convenient charging. CE, FCC, RoHS certified.
Specifications
| Size | 8.1 × 4.9 × 1.6cm |
| Weight | 54g |
| Material | ABS + PC |
| Color | Black / White |
| Certification | CE, FCC, RoHS |
| Capacity | 2000mAh / 7.4Wh |
| Rated Capacity | 1200mAh |
| Efficiency | ≥75% |
| Type-C Input | 5V / 1.5A Max |
| Type-C Output | 5V / 2A Max |
| DC Output | 3.7V / 1.5A Max |
WOP49 Heating Scarf Battery
Ultra-compact battery designed for heated scarves and heated socks. Only 47g weight. Available in Pink and White colors. CE/FCC/RoHS certified.
Specifications
| Size | 7.2 × 4.1 × 1.3cm |
| Weight | 47g |
| Material | ABS + PC |
| Color | Pink / White |
| Certification | CE, FCC, RoHS |
| Capacity | 2000mAh / 7.4Wh |
| Rated Capacity | 1200mAh |
| Efficiency | ≥75% |
| Micro Input | 5V / 2A Max |
| USB Output | 5V / 2A Max |
WOP61 Heating Gloves Battery
Battery specifically designed for heated gloves. 7.4V output provides stable power for heating elements. CE, RoHS, FCC, PSE certified.
Specifications
| Size | 5.2 × 4.8 × 2.1cm |
| Weight | 83g |
| Color | Black |
| Certification | CE, RoHS, FCC, PSE |
| Battery Type | Li-ion |
| Nominal Voltage | 7.4V |
| Charge Limit Voltage | 8.4V |
| Rated Capacity | 2500mAh / 18.5Wh |
WOP53 Heating Pillow Battery
Multi-purpose battery for massage pillows, heated plush toys, and hand warmers. 12.6V high voltage output for powerful heating. White shell design.
Specifications
| Size | 8.5 × 6.3 × 2.2cm |
| Material | ABS + PC |
| Color | White |
| Battery Type | Li-ion |
| Capacity | 1800mAh / 20Wh |
| Rated Capacity | 1800mAh |
| DC Input/Output | 12.6V / 2A |
2-in-1 Hybrid Chargers
Charger + Power Bank | Wall Adapter + Battery
WOP25 TFT Smart Hub
Premium 5000mAh power bank with built-in TFT display and 3-in-1 functionality. Aluminum alloy + tempered glass chassis. 15W wireless charging supports iPhone, Apple Watch, and AirPods. Available in Black, White, Orange.
Specifications
| Battery Cells | A+ Class Li-Polymer |
| Shell Material | Aluminum Alloy + Tempered Glass + ABS |
| Size | 104×66.5×10.4mm |
| Weight | 170g |
| Colors | Black, White, Orange |
| Ports | Type-C (Input/Output) |
| Input | 5V/3A, 9V/2A |
| Output | 5V/3A, 9V/2.22A, 12V/1.67A (20W Max) |
| Wireless Output | 2.5W/5W/7.5W/10W/15W |
WOP15 TFT Power Hub
10000mAh 3-in-1 power bank with TFT display. Aluminum alloy + tempered glass shell. 15W wireless charging supports iPhone, Apple Watch, and AirPods. Available in Black, White, Orange.
Specifications
| Battery Cells | A+ Class Li-Polymer |
| Shell Material | Aluminum Alloy + Tempered Glass + ABS |
| Size | 104×66.5×15.6mm |
| Weight | 230g |
| Colors | Black, White, Orange |
| Ports | Type-C (Input/Output) |
| Input | 5V/3A, 9V/2A |
| Output | 5V/3A, 9V/2.22A, 12V/1.67A (20W Max) |
| Wireless Output | 2.5W/5W/7.5W/10W/15W |
WOP21 67W Power Bank
High-power 20000mAh (74Wh) power bank with 67W PD output. Powers laptops and multiple devices simultaneously. ABS+PC shell. 4×5000mAh polymer cells for reliable performance.
Specifications
| Battery Capacity | 20000mAh (4×5000mAh cells) |
| Battery Energy | 74Wh (5000mAh × 14.8V) |
| Rated Capacity | 12000mAh (5V/3A) |
| Size | 15.3×7×2.8cm |
| Material | ABS + PC |
| Battery Type | Polymer Lithium |
| Type-C/C Cable Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.35A (67W Max) |
| USB-A Output | 5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A (22.5W) |
| Efficiency | ≥75% |
WOP22 130W Power Station
High-capacity 20000mAh (72Wh) power bank with 130W total output. Powers two laptops simultaneously via dual 65W PD ports. Perfect for mobile offices, business travel, and professional use.
Specifications
| Battery Capacity | 20000mAh / 72Wh |
| Rated Capacity | 12000mAh (5V/2A) |
| Size | 16.2×5.6×4.1cm |
| Material | ABS + PC |
| Battery Type | Lithium-ion |
| Type-C/C Cable Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A (65W Max) |
| USB-A Output | 5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A (22.5W) |
| Dual Port Output | 65W+65W (130W Max) |
| Input | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A |
| Efficiency | ≥75% |
WOP23 Extreme Power 240W
Flagship PD 3.1 power bank with 240W total output and 140W single port. 27000mAh (97.2Wh) high-density cells. Supports 28V/5A for high-power laptops. UN38.3 certified for airline carry-on.
Specifications
| Battery Capacity | 27000mAh / 97.2Wh |
| Rated Capacity | 16000mAh (5V/2A) |
| Size | 16.2×5.6×5cm |
| Material | ABS + PC |
| Battery Type | Lithium-ion |
| Type-C Output | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A (100W) |
| Type-C Cable Output | 5V/3A-20V/5A, 28V/5A (140W Max) |
| USB-A Output | 5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A (22.5W) |
| Dual Port Max | 100W+140W (240W Max) |
| Efficiency | ≥75% |
WOP69 67W Hybrid Pro
High-power 2-in-1 hybrid charger with 67W PD output. 15000mAh capacity powers laptops and multiple devices. PPS 3.3-11V/4.5A support. Global plug options available.
Specifications
| Battery Energy | 58Wh (5000mAh × 11.6V) |
| Rated Capacity | 8600mAh (5V/2A) |
| Size (US) | 12.4×5.2×4.9cm |
| Material | PC + ABS optional |
| Plugs | US/EU/UK/AU |
| AC Input | 110-240V~, 50/60Hz, 1.5A Max |
| Adapter Mode Output | Type-C: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.35A (67W) |
| USB-A Output | 5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A (22.5W) |
| PPS | 3.3-11V/4.5A |
| Efficiency | ≥60% |
WOP67 45W Built-in Cable
2-in-1 hybrid charger with built-in retractable cable. 45W PD output in power bank mode, 33W when adapter + power bank combined. 10000mAh capacity. Global plug options (US/EU/UK/AU).
Specifications
| Battery Capacity | 10000mAh / 38.7Wh |
| Rated Capacity | 5600mAh (5V/2A) |
| Size (US) | 12.4×5.2×3.9cm |
| Material | PC + ABS optional |
| Plugs | US/EU/UK/AU |
| AC Input | 110-240V~, 50/60Hz, 1A Max |
| Power Bank Mode Output | Type-C: 5V/3A, 9V/3A, 12V/2.5A, 15V/2A, 20V/1.5A (45W Max) |
| USB-A Output | 5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A (22.5W Max) |
| Combined Output | 33W Max |
| Efficiency | ≥60% |
Power Bank Insights
Expert guides for OEM/ODM sourcing
Power Bank FAQ
Essential for OEM/ODM partnerships
What is the MOQ for OEM power bank orders?
Our MOQ is 500 units per SKU for standard models. Custom ODM projects with unique battery cell configurations (such as semi-solid-state) require 1000+ units. We provide flexible MOQ options for startup brands—contact us to discuss your volume requirements.
What capacity options do you offer?
We manufacture from 5,000mAh to 40,000mAh. Popular options: 10,000mAh (slim), 15,000mAh (hybrid), 20,000mAh-27,000mAh (high-capacity). All use Grade A Li-polymer cells.
What certifications do your power banks have?
All power banks are CE, FCC, RoHS certified and UN38.3 tested for safe air transport. We provide complete documentation including MSDS reports.
Can you customize the design?
Yes. Our OEM/ODM service includes custom CMF, logo printing, packaging design, and capacity configuration. Power bank-specific options include TFT display integration, wireless charging pads, 2-in-1 hybrid designs (wall charger + power bank), and semi-solid-state battery technology.
What is the production lead time?
Standard OEM: 25-35 days after sample approval. Custom ODM: 45-60 days. Express tooling and rapid prototyping services available.
Do you offer semi-solid-state battery power banks?
Yes. We offer semi-solid-state battery power banks - the CES 2026 award-winning technology. 50% thinner, 30% higher energy density (semi-solid-state battery manufacturer specifications), safer than Li-Po. Available in 5,000mAh-10,000mAh with Qi2.2 wireless charging support.
Not All Factories Are Equal
See how WOWOHCOOL compares to typical power bank OEMs in China.
| WOWOHCOOL | Typical Factory | |
|---|---|---|
| Semi-Solid-State Battery | ✅ Deployed | ❌ Not available |
| Fast Charging Standard | PD 3.1 up to 240W | PD 3.0 up to 100W |
| Named Enterprise Clients | Bosch, Jacob Jensen | Generic references |
| Capacity Range | 5,000 - 60,000mAh | 5,000 - 20,000mAh |
| R&D Engineers | 50+ | 10-20 typical |
Don't settle for generic — partner with a factory that Fortune 500 companies trust.
Perfect for Your Business
Thousands of businesses trust WOWOHCOOL for their power bank sourcing. See which profile fits you.
Amazon & e-Commerce Sellers
Private-label power banks with retail-ready packaging. PD 3.1 and semi-solid-state options for market differentiation.
- ✓ Custom branding & packaging
- ✓ MOQ from 500 units
- ✓ Amazon-compliant certifications
Travel & Outdoor Brands
Lightweight high-capacity power banks for travel gear lines. Semi-solid-state technology for extreme temperature performance.
- ✓ Slim & lightweight designs
- ✓ Semi-solid-state options
- ✓ Retail packaging included
Corporate Gifts & Promotions
Custom power banks for corporate gifting, trade shows, and promotional events. Full color and logo customization available.
- ✓ Full-color branding
- ✓ Low MOQ for pilot orders
- ✓ Express shipping available
What Our B2B Partners Say
Trusted by distributors, brands, and procurement teams across 50+ countries since 2013.
"We ordered 3,000 units of the WOP22 130W for our Amazon US store. The UN38.3 certification made customs clearance smooth. Had a minor QC issue with the first batch - their team responded within 24 hours and sent replacement units. Second order was perfect."
Marcus T.
Amazon Seller, Consumer Electronics
Phoenix, Arizona, USA
"As an electronics importer, I've worked with many Chinese factories. WOWOHCOOL stands out for their documentation quality. Every unit came with proper CE/FCC certificates and the packaging met EU regulations. The semi-solid-state power banks we sourced are flying off shelves."
Klaus B.
Procurement Director
Munich, Germany
"We source branded power banks for corporate gifts. The 2-in-1 hybrid chargers (WOP67) were exactly what our tech company clients needed. Nico from their team is responsive - sometimes too many emails but quality makes up for it. Would recommend for bulk corporate orders."
Sarah W.
Purchasing Manager
London, UK
"Found them through the Alibaba verification. Their factory is real - we did a video call audit before ordering. Delivered 5,000 power banks to Brazil with complete documentation. Shipping took 45 days by sea which is normal. Communication could be faster during holidays."
Ricardo M.
Import/Export Manager
São Paulo, Brazil
"We order branded power banks monthly for hotel amenity programs across the Middle East. The WOP25 with TFT display is popular with guests. One shipment had color matching issues (custom orange was slightly off) - they corrected it in the next batch without argument."
Ahmed K.
Operations Director
Dubai, UAE
"Ordered samples first (2 units) to test quality. The samples were shipped fast and worked well. Placed bulk order for 2,000 units of the WOP23 240W. Production took about 30 days, QC photos were sent before shipping. Good experience overall for laptop power banks."
Jennifer L.
Buyer, Electronics Retail Chain
Toronto, Canada
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