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Black rectangular external battery pack with two USB-A ports and a DC power jack, matte finish, 0.85 inches thick

DELL

DELL R7CW8 18000 mAh External Battery Pack

SKU CH-NG8Y-EMMAN MPN R7CW8

A 6-cell lithium-ion external battery pack with 18000 mAh capacity, two USB-A ports and a 19.5 V DC output for laptops

  • Battery type6 Cell Lithium-Ion
  • Battery capacity18,000 mAh
  • Measurements0.85 in × 3.07 in × 6.38 in
  • Product colorBlack
  • Product typeExternal battery pack
  • Key featuresOutput connector(s): 2 × 4 pin USB Type A (power only) - 5 V
  • 18000 mAh capacity keeps laptops running longer
  • Two USB-A ports charge phones and tablets at 5 V 2.1 A
  • 5 V DC jack powers compatible Dell notebooks directly
  • 6-cell lithium-ion design packs energy into 0.85 x 3.07 x 6.38 in frame
  • Weighs 0.90 lb so it fits easily in a travel bag

Portable Power Companion for Dell Laptops

The DELL R7CW8 is a new external battery pack rated at 18000 mAh using a six cell lithium ion design. It provides mobile power for compatible Dell notebooks through a 19.5 volt DC output rated at 2.3 amps. Two USB Type A ports supply five volts at 2.1 amps each for phones or accessories. The unit measures 0.85 by 3.07 by 6.38 inches and weighs 0.90 lb.

Replaces a Tethered Wall Charger

This pack replaces the need to stay near a mains socket during long meetings, flights or field work. The jump is worth it when your internal battery cannot last a full working day and you need both laptop charging and USB device top ups simultaneously. Two charging cables are included in the box for immediate use.

Check Connector Fit and Voltage Match

Before ordering verify that your Dell laptop accepts a 19.5 volt 2.3 amp DC input through a compatible barrel jack. The USB ports are power only and do not carry data. Buyers who need higher wattage output or USB Power Delivery negotiation should look elsewhere as this unit does not support those standards.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $106.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameR7CW8
Product colorBlack
Product typeExternal battery pack
Power
Battery type6 Cell Lithium-Ion
Battery capacity18,000 mAh
Size & build
Measurements0.85 in × 3.07 in × 6.38 in
Product weight0.9 lb (0.41 kg)
Shipping weight0.54 kg
Package size254 × 203 × 51 mm

Questions about this item

What are the dimensions and weight of the R7CW8 external battery pack?

The pack measures 0.85 inches thick by 3.07 inches wide by 6.38 inches long and weighs 0.90 lb.

How do you connect a laptop to the DC output, and what mistake should be avoided?

Use the included charging cable with the 19.5 V DC jack; ensure the laptop requires 19.5 V at up to 2.3 A before connecting.

When should the internal 6-cell lithium-ion battery be replaced?

Replace the unit when it no longer holds enough charge to run your devices for the required time, as the sealed 6-cell pack is not user-serviceable.

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