Ronin Mini Power Bank – 20000mAh – R-4040

Ronin R-4040 20,000 mAh Power Bank – High-Capacity Fast-Charge Power Companion

The Ronin R-4040 is a high-capacity power bank designed to keep your devices powered up during long days, travel or heavy use. With a 20,000 mAh battery, modern fast-charging support (up to 35 W), built-in cables and a digital display, this unit offers both power and convenience in a portable package.

Specifications of Ronin R-4040 Power Bank

• Brand: Ronin

• Model: R-4040

• Battery Capacity: 20,000 mAh (77 Wh approx.)

• Rated Capacity (5 V): ~12,800 mAh

• Battery Type: Li-Polymer

• Input Ports: Type-C Input 5 V/3 A (27 W max)

• Output Ports:

  • USB-A Output: 5 V/2.4 A (22.5 W max)

  • Type-C Output: 5 V/3 A (35 W max)

  • Built-in Type-C Cable Output: 5 V/2.4 A (35 W max)

  • Built-in Lightning Cable Output: 5 V/2.4 A (27 W max)

• Display: Digital percentage-indicator display

• Material / Finish: Matte-finish shell with textured grip

• Dimensions: ~ 102 × 71 × 34 mm

• Weight: ~ 332 g

• Safety Features: Over-charge, over-discharge, short-circuit and temperature protection

• Warranty: 1 Year (brand warranty)

Why Ronin R-4040 Is the Ultimate Smart High-Capacity Power Bank?

If your customer is looking for a power bank that balances extremely high capacity with modern fast-charging features and built-in cable convenience, then the Ronin R-4040 checks all the boxes. Whether for travel, work, or emergencies, it ensures devices stay powered with less waiting, and fewer cables to carry.

Key Benefits of Ronin R-4040 Power Bank

• Massive 20,000 mAh Capacity: Ideal for multiple full phone charges or topping up tablets and accessories.

• Super Fast Output up to 35 W: Delivers high output via USB-C or built-in cable for modern devices.

• Built-in Cables (Type-C + Lightning): Conveniently charge without extra wires.

• Digital Battery Display: Know the exact remaining charge at a glance.

• Compact & Portable Design: Reasonable dimensions for the capacity, making it travel-friendly.

• Robust Protection Circuitry: Ensures safe operation and peace of mind for users.