Price: £200.00

It's one thing to have power. And it's another to have it in a compact design that is easy to pack, light to carry and expandable to fit changing power needs.
The Goal Zero Sherpa 50 Power Pack takes the bulk out of rechargeable power and offers a lightweight yet durable way to bring power along with you.
Charge it from the wall, solar panels or car adapter and add other Sherpa power packs and inverters through a simple stacking and unique cord chaining method to expand your powering abilities and options.
LCD status monitor keeps track of power storage in 20% increments. Integrated charge controller protects internal battery and connected devices from burnout and electrical spikes.

    * Charge any device; USB, 12V and AC (with inverter) outputs
    * Powers laptop for an additional 1-3 hours
    * 20+ hours of power for cellphone or Goal Zero LED lights
    * Long-lasting 50 watt-hour power pack
    * Rechargeable lithium battery; 5-8 year life (2,000 - 3,000 cycles)
    * Chain up to three (3) additional Sherpa power packs

Charging Times
Wall (AC)     2 hours
Nomad 13.5 (Solar)     4 hours
Nomad 27 (Solar)     2 hours
Boulder 15 (Solar)     3 hours
Boulder 30 (Solar)     2 hours
Escape 30 (Solar)     2 hours
* Expect 2-4x longer charge times depending on weather conditions when charging by solar.

Input Sources
AC Wall Charger     45 watts     (15.3V:3A)
DC 12V*     120 watts     (12V:10A)
DC Solar Panels*     Depends on solar panels

Output Ports
USB     2.5 watts     (5V:0.5A)
DC 12V barrel     120 watts     (12V:10A)
AC Inverter*     100 watts     (110V:0.9A)
Fuse Protection     20A     (protects 12V barrel)
*Products not included with the Sherpa 50 battery alone

Internal Battery
Battery Type     Lithium-Iron Phosphate (LiFe)
Battery Capacity     50 watt hours     (12V:4.2A)
Battery Voltage     12 Vdc     (nominal)
Temp. Controller     Shuts down input port if temp. is >122°F
Life Cycles     2,000-3,000     (5+ years)
Shelf Life     6 months±     (stored <70°)

General
Product Weight (no pkg)     2.2 lbs / 0.99 kgs
Product dimensions     8.5 x 6 x 1.5 (inch)     21.5 x 15 x 4 (cm)
Warranty     Twelve months

Operating Temperatures
Optimal Operating     32°-104°F     0°-40°C
Optimal Storage     32°-86°F     0°-30°C
Certifications
Tested and certified     CE and FCC