External battery pack for laptop

**Powerful with long operation time
**Long cycle life: up to 1000 times
**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
For more information, pls visit to www.m-ups.com or www.globalsources.com/wintop.co, you also could email us at [email protected]