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Sherpa 50 Kit with Inverter


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Model # 15002363 | Mfg # 42005

Product Description

If you can plug in a cord you can use a Sherpa 50 Recharger. There are three ways to recharge the Sherpa 50.

  1. Recharge from the wall - takes about 3 hours.
  2. Recharge from your car using 12V port. - takes about 3 hours
  3. Plug it into a solar panel and place in the sun - takes about 5 hours.

An ultra-portable power supply to keep laptops and tablets charged up anywhere you go. The Sherpa 50 Solar Recharger is easy to pack and light to carry so your gear now goes the same distance you do and quickly recharges from wall, car or sun.

  • Keep a screen brighter, longer
  • Extend the life of a laptop by 2 or more hours
  • Easy to pack
  • Weighs less than a bottle of water
  • Refuel anywhere, anytime
  • Solar charge Sherpa 50 in 6 hours


  • Charge every 3-4 months to maintain battery life.
  • For up to 1-year storage, discharge to 50%, remove fuse, store in cool temperature.
  • Charges from the following: Approx. Charge Time:
    AC Wall Charger 3 hours
    12V Car Charger 3-4 hours
    GOAL ZERO Nomad 13 6-12 hours


  • Charging Port (8.0mm, blue, circle) 15-25V (30W max)


  • USB Standard Port 5V, 0-1.5A (7W max), regulated
  • 12V port (6.0mm, green, hexagon) 12V, 0-6A (75W max), regulated
  • Sidecar port (9mm, side) 9-13V, 0-10A (75W max), not regulated,
    Use with Sherpa inverter or for chaining.
  • Laptop port (7.4mm, orange, square) 19V, 0-5A (75W max) regulated
  • AC Inverter (sold separately) 110VAC (75W max) modified-sine wave


  • Battery Type Lithium-ion (NMC)
  • Battery Capacity 50Wh+ (2x3x3.6V, 2.6Ah cells)
  • Battery Voltage Range 9-13V
  • BMS Built-in charge controller, and cell output protection
  • Life-span hundreds of cycles
  • Fuses 10A, standard car fuse


  • Chainable yes, with other Sherpa V2
  • Weight 1.1 lbs
  • Dimensions 4.5 x 1.5 x 5 in (11.4 x 3.8 x 12.7 cm)
  • Warranty 12 Months
  • Certifications FCC and CE
  • Optimal Operating Temp. 32-104 F (0-40 C)


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by PowerReviews
Goal Zero Sherpa 50 Kit with Inverter

(based on 132 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


  • Reliable (45)
  • Good power output (41)
  • Fast charge (39)
  • Good value (38)
  • Long lasting (33)


  • Charges slowly (6)
  • Pricey / poor value (4)
  • Inconsistent performance (3)

Best Uses

  • Travel (50)
  • Portable electronics (47)
  • Emergency equipment (35)
  • Having around the house (23)
  • High-end equipment (15)
    • Reviewer Profile:
    • Quality oriented (52), Budget shopper (5)
    • Primary use:
    • Personal (42), Business (16)
    • Was this a gift?:
    • No (54), Yes (4)

Most Liked Positive Review


Compact, yet just as powerful

Let me first start by saying that the newest iteration of the Sherpa50 is superior in almost all respects to the old Sherpa 50. Be that the smaller form factor, the use of Li-ion...Read complete review

Let me first start by saying that the newest iteration of the Sherpa50 is superior in almost all respects to the old Sherpa 50. Be that the smaller form factor, the use of Li-ion over Li-Po, and the products adaptability to your everyday life. The new Sherpa50 has almost everything. To make this review a little more readable to the masses, I'll start out with my impressions of this device, and the results of months of stress testing I imparted on this battery pack. And once the basics are out of the way, I'll lay down some of the technical information which people like me will find important.

Based on how I rated this product, I'm sure you can guess I'm quite happy with the Sherpa50's performance and form factor. Having extensively used the older (and much larger) brother to the new Sherpa50, the newest version leaves my school bag, and backpack lighter, and with more space. Yes, the new Sherpa50 is half the weight, and takes up only 48% of the volume of the older version. This may not be important for everyone, but I don't have to tell those who backpack, or have to haul things on their person (bag, purse, pocket, whatever) how important a pound+ savings can be. Normally such an accomplishment comes at a cost, but not this time.

So, what are some of the changes made? The biggest would be the changeover to laptop cells (6x 18650's, vs. 3 large LiPo's), and a much more compact circuit design. But GoalZero didn't just stop by making the product smaller; they added a beefier USB port (1.5A vs 0.5A, and yes, this thing charges iPads, and Smartphone's with ease), a cleaver attachable inverter (sold separately, though worth picking up), the addition of a laptop port (you can't use the laptop and 12v port simultaneously), and an LED light.

The new Sherpa50 now comes with a regulated 12v port to keep some of your electronics happier. And I found total output to be fairly consistent with varying loads. But I did notice that the new design is a little less efficient when charging under solar power (requires more solar energy to acquire the same state of charge). There are also more apparent safeties built into this model. For the most part, these are good, because they not only protect you from a failure, but also extend the life of the device by limiting the amount of damage you can do to the cells. But under heavy loads, especially while charging from solar, I could trigger the thermal safety cut-off, completely disconnecting any external charge coming in. The older version of the Sherpa50 was less temperate on this issue, but on the same note, the older version appears to be degrading faster when it comes to maintaining maximum capacity.

So, how has the new battery worked for me? Well, its main use has been powering my laptop (through the use of the attachable inverter) on an almost daily basis. In many instances I've used the new Sherpa50, with a few Nomad13's, to keep my laptop powered throughout the day without a plug in sight. Using the Sherpa50 to power your iPad (or other tablet) basically equates to 10-20hrs of use (depending on model) before even touching your internal battery. And if keeping your phone charged for days away from the city is important, well, look no further.

So, here comes the technical stuff. First, I'd like to talk about the advertised capacity. Under a 1C discharge, initial capacity showed 51wh (±1.8wh), which is slightly above those quoted by the company (the original Sherpa50 only gave 43wh under similar testing). And with close to 60-70 discharge cycles now on this pack, it still shows a capacity of 47wh. Though data on the specific LG cells used by GoalZero are unavailable, similar models show an expected drop-off of 80% after 300 cycles, putting my results closely in line of a linear model. Cells come in a standard series parallel (3-3.7v series, 2 sets in parallel) configuration, using quality cells. Because the cells are charged to about 90% of their total capacity, there will be some degradation over the long haul (the ideal standard is to only use 65% of total capacity for longest life). But having designed/built a battery pack under similar parameters as GoalZero for the solar car of our University, we found longevity of the cells to be only a minor issue.

To wrap up this review, the new Sherpa50 follows in the footsteps of its older brother. But the newest offering gives you more features in a lighter, smaller form factor, making this battery perfect for almost everything. Capacity in my testing has also increased by 18%, while battery safeties are maintaining that capacity longer. I really liked the old Sherpa50, but this new one I just love, that's about all I can say.


Most Liked Negative Review


DME - CPAP Experience

I purchased the Sherpa 50 for its compact size and ability to add an inverter right to the pack it's self, no need to carry 2 separate items. While camping our Generator went down...Read complete review

I purchased the Sherpa 50 for its compact size and ability to add an inverter right to the pack it's self, no need to carry 2 separate items. While camping our Generator went down and so did the only 12v inverter we had. Suffering from Sleep Apnea is life or death, well I remembered I had our Sherpa 50 in the bag, it gave me @ 4 hours of run time, not quite a full night sleep but better than nothing. Gave it a full charge the next day and only got about 3 the next night worked well, but seemed to need just a bit more. Really like the USB / and flash light / wish the LED had a bit harder switch, got bumped and came on several times. Needs a switch like the one on the inverter / flat and a bit harder to switch on..

Reviewed by 132 customers

Displaying reviews 1-10

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(1 of 1 customers found this review helpful)


Goal Zero Sherpa 50 not show fully charged

By Alex07ss

from Ukraina

Comments about Goal Zero Sherpa 50 Kit with Inverter:

new but defective will not charge more than 60% after long not charge indicates that the fully charged


Stays charged!

By Roostified79

from New Hampshire, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

This thing is great. Lightweight, multiple options, and it holds a charge very well.


Ability to put out 12 volt and usb


from Abilene Texas

Comments about Goal Zero Sherpa 50 Kit with Inverter:

Sherpa kept my devices charged in combat used in high temperature and freexing tempratures it has been a life saver for me


Great features!!

By Cobalt87

from San Diego, CA, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

I brought a year ago and still works great. Has not fail me once on a camping trip or the road.


Sherpa 50 is my love!

By Joey7

from Phoenix, AZ, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

Sherpa 50 is plenty for what you need for backpacking and car camping. Mostly, I use for lantern, cell phone, tablet, and camera. This thing is a beat when it comes to juicing to electronics. Amazing how you can plug two things at once and it keeps juicing the electronics quickly.


Great Kit

By Siv1

from Oslo, Norway

Comments about Goal Zero Sherpa 50 Kit with Inverter:

I've used the Sherpa 50 Kit on our Expedition in Nepal this spring and it gave us the power we needed to charge our cell and satellite phones, cameras etc. Great kit that I can recommend for anyone that need that little extra power - Solar panel also worked well and hour estimates for charging we found more or less accruate.


versatile !

By Lewis

from Santa Barbara, CA, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

What really nice about this product is that it's really small and portable. I did actually buy the Sherpa 50 kit, which includes the nomad 13, the Sherpa 50, and the nomad 13. It looks cool too! Also, one thing that I didn't know I even wanted is the amount of input power this thing can recive, meaning since the Sherpa receives DC power its actually capable of receiving higher speeds of charge compared to some other powerbanks. Like ones based off of USB , they usually receive a limit of 5volts , 4 watts. The Sherpa 50 for example, takes in 32 watts peak this is awesome when using solar, because the flow of the current is much larger and therefore causing it to recharge faster than say I would my cell phone because that's also limited to say 5-7 watts. That's wat makes using the Sherpa 50 awesome, you can take much more advantage with one of the banks to collect more power, faster. I still haven't had a chance to use the inverter on it, I am honestly a little afraid to because its a modified sine wave, I'm not too sure if it'll damages my batteries. Overall its an awesome product!


Great Product

By Imjatse

from Haymarket, VA, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

I've been a fan of Goal Zero for the past few years, ever since I purchased a Sherpa 50 and two Nomad 20's for a recent trip to Nepal. The products worked flawlessly. I have since purchased Switch and Nomad 13 to add to my Goal Zero collection.


Power for amateur radio Field Day


from Pelham, NH, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

Field Day is an event held annually that gives amateur radio operators a chance to test their mettle in emergency situations. My Sherpa 50 powered my radio for the 24 hour event, exceeding my highest expectations. Our team contacted hundreds of other operators nationwide with juice to spare. I have also used this system on the Boston Harbor Island national park campgrounds, seven miles out to sea. With this system I keep my phone, tablet, lights, cameras, and radio rocking all weekend. You can't beat the simplicity, reliability, and versatility. I have two, and I will get a couple more. Yes, they are that good.


Perfect Light weight

By JT from SA

from San Antonio, TX, United States

Comments about Goal Zero Sherpa 50 Kit with Inverter:

Bought this for weekend camping. Enough power to light my light and recharge my phone without recharging. Wish I could turn off the power LEDs Overall well made and durable we'll see as I go on more trips

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