Checkout Secure
FREE Shipping on all USA Orders!

Questions? Shoot us an Email!

Mon-Fri 9am-6pm Eastern

Enginstar 300 Watt Portable Power Bank

✓ #1 Authorized Enginstar Retailer
✓ Lowest Price Guaranteed & No Sales Tax
FAST & FREE Shipping From US Warehouse, Please Allow 3-7 Days for Delivery
✓ Charge Up Your Enginstar 300W Power Station Using Any Regular Power Outlet or compatible Solar Panel
Clean Energy No Harmful Fumes like Gas Generators, Can be Used Indoors, Whisper Quiet
Charge Anything, Anywhere, Anytime Ideal for Camping and At Home Power Alike
✓ 24 Month Warranty and 30 Day Returns
✓ Discount Code: ECO10 For $10 Off For a Limited Time!

I agree to subscribe to updates from The Eco Store Privacy Policy

Your Price:
$199.99 $269.99

Checkout Secure
Checkout Secure

4 Great reasons to buy from us:

  • Image of Secure Ordering
  • Image of Lowest Price Guaranteed
  • Image of 100% Satisfaction Guaranteed
  • Image of Easy Returns

Enginstar 300 Watt Portable Power Bank

Great for Indoor and Outdoor Usage!

This Enginstar 300Watt Portable Power Bank includes an AC Outlet, 2 AC Ports, 3 USB Ports and 3 DC Ports. This portable power bank is perfect for the outdoors, camping, traveling, hunting, or emergencies. With an 80000mAh power supply, this device is even perfect for most CPAP Machines.

What's in the Box:

  • (1x) Enginstar 300 Watt portable power station.
  • (1x) AC power adapter.
  • (1x) User manual.


  • What it does: ENGINSTAR R300 power pack has a huge capacity of 298 watt-hour (80,000mAh, 3.7V), It can easily meet the electrical needs of all your devices less than 300W. It will fully charge a laptop > 5 times, cellphones > 20 times, CPAP machine > 4 nights(by using DC converter), mini refrigerator > 5 hours.
  • Ideal backup power for outdoor camping The size is only 9 x 5.5 x 7.5 inches, easy to carry wherever you go. Portable power supply features plenty of ports for most kinds of appliances. 2x PURE SINE WAVE AC output ports(110V 300W, 500W peak), 2x DC output ports(12&24V 96W), 2x USB output ports(5V/3.1A max), 1x 18W type-c output port, 1x cigarette lighter output port(12V/8A).
  • Charge it up with Solar Panels!:(Required 12V-25V output, buy separately): The fuel or gas generator will run out, but the sun light is unlimited. Get the power any where, fully charged by solar panels in 7 hours with full sun light, keep your outdoors always pumped!
  • Pure sine wave output: Better than modified sine wave, the pure sine wave power will protect your sensitive devices, for a better working performance. ENGINSTAR is a factory with more than 10 years specializing in lithium-ion battery products, you are buying from an experienced factory, buy with confidence. :)


We are glad to offer Free Shipping for products shipped within the continental US.

For any small parcel shipments going Ground, you can usually expect delivery of your product within 5-7 business days for orders being shipped to any of the contiguous states.

Warranty & Returns


Enginstar’s products come with a 24 month replacement or maintenance warranty, a 30 day money-back guarantee, and lifetime technical support

Returns: Any unopened/unused and non-defective product purchased can be returned to us within 30 days of the original ship date without incurring a restocking fee. You must contact us via email at

When you contact us we will provide you with an RMA number and confirm the return address to you. You can then arrange to send back the product. The return cost associated with any unopened/unused and non-defective product is the purchasers responsibility.

If you would like to return any unopened/unused and non-defective product after 30 days of product purchase, that item can be returned back to us and you will incur a 15% restocking fee. In addition, the return cost associated with the unopened/unused and non-defective product is the purchasers responsibility.

If for any reason your product is damaged upon receipt, please contact us via email at so that we can work with you on getting a replacement.

Enginstar 300 Watt Portable Power Bank

$199.99 $269.99

Added to cart!
FREE Shipping on all USA Orders! Free Shipping on All Orders! FREE Shipping on all USA Orders. Offer ends in You Have Achieved Free Shipping All orders are processed the following business day and with Free Shipping on all orders. FREE Shipping on all USA Orders! XX