High-Capacity Power Banks
for B2B & Wholesale
We are a leading manufacturer in Shenzhen, China since 2013. We make products for global brands. We offer slim 5,000mAh to high-capacity 40,000mAh power banks. We also have the latest semi-solid-state batteries and 2-in-1 hybrid chargers (wall charger + power bank in one). All products are Grade A quality at factory direct pricing.
As a professional manufacturer in Shenzhen, we produce Grade A solutions with 10-layer protection. Our products include PD 3.1 up to 140W output, semi-solid-state batteries, and 2-in-1 hybrid chargers. All units are UN38.3 certified for global shipping. Custom branding and packaging available. Need GaN chargers or car chargers? Check our selection. Learn about our factory.
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.
Product Catalog
5,000mAh - 40,000mAh | Standard Power Banks + 2-in-1 Hybrid Chargers
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. 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. 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. 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. 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% |
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, safer than Li-Po. Available in 5,000mAh-10,000mAh with Qi2.2 wireless charging support.