Checkout Secure
FREE Shipping on all USA Orders!

Questions? Shoot us an Email!

Mon-Fri 9am-6pm Eastern

Humless Universal 20/8.5 – House Battery

✓ #1 Authorized Humless Retailer
✓ Lowest Price Guaranteed & No Sales Tax
Fast & Free Shipping From US Warehouse: Please Allow 3-7 Days for Delivery
✓ 100% Quality Guarantee, Satisfaction Guarantee
✓ 1 Year Warranty + 30 Day Returns
Lowest Price Match Guarantee, Contact Us Today

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

Your Price:

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

Humless Universal 20/8.5 – House Battery


The Universal 20/8.5 is the middle size in Humless's Universal line. This system features 20 kWh’s of lithium battery storage, 8.5 kVA (6.8 kW) premium inverter, remote monitoring and is stackable. This system breaks into larger energy storage. At 20 kWh, the Universal 20 can take the average residential home fully off the grid. If paired with solar and/or a generator, the hybrid solar system will store and provide a nearly endless power supply.

The Universal 20/8.5 whole house battery backup also has a 6.8 kW inverter, charge controller, battery management system, and LCD screen system monitoring. This big system has enough power to take a cabin completely off grid or power a residential home. The Universal can AC and DC couple from solar PV simultaneously. This means an AC coupled solar inverter can be between 4,000-8,500 Watts depending on AC inverter type chosen. On the DC coupled array you can also add up to 3,500 watts of solar PV.


  • BATTERY Lithium - 20 kWh
  • DIMENSIONS 41" x 32" x 13" (BMS) - 23.75" x 49" x 24" (Battery)
  • WEIGHT 850 Pounds
  • CYCLES 4,000+
  • OUTPUT 8.5 kVA (6.8 kW)

Humless Energy - Own Your Power

Warranty & Returns


Humless warrants this product and its parts against defects in materials or workmanship for one year from the original ship date. During this period, Humless will repair or replace defective parts with new or reconditioned parts at Humless’s option, without charge to you.

Returns: Humless provides a 30-Day Return Window and the following limited warranty. This limited warranty extends only to the original purchaser. 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.

Damages: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.


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

We currently do not offer shipping to Hawaii or Alaska through our website. If you are interested in placing an order to ship to either of these locations, feel free to reach out to us directly so that we can work to provide you custom shipping arrangements.

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.

This product can not be shipped to a P.O. box.

Humless Universal 20/8.5 – House Battery


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