Universal External Battery Pack For Laptop

Powerful with long operation time
Long cycle life: up to 1000 times (9years lifetime)
Widely compatible
Super thin design
Portable and convenient
Excellent security and reliability
High efficiency of power conversion
Electricity-saving function
User friendly
Memory effect free
Fashionable
Environment friendly and economic efficiency
Output voltage: 14V-24V (intelligently adaptable only by changing the intelligent cable)
Output current: Max 3. 5A (intelligently adaptable only by changing the intelligent cable)
Capacity: L4 with 42WH, L5 with 63WH, L6 with 84. 5WH
Operating temperature: -10-40 deg. C
Operating time: L4 for 4-6h, L5 for 6-8h, L6 for 10-12h.
Weight: L4 550g max, L5 700g max, L6 850g max
Working with: laptop computers of most brands and models