Genialt produkt.

Liked everything about the River Pro, so doubling the storage capacity was a good choice.

Doubled my power on my river pro.

Really good price for extra battery storage.

High quality. Reliable. Nearly perfect.

This is a great add-on for my River Pro. Works perfectly. Not a big footprint. Not too heavy, easy to handle. I recommend this product.

I love that this add-on battery will charge at the same time as the main Eccoflow unit. They charge so much faster than other units I've had. That is super handy! This doubles the run time which is fantastic. The part that isn't so great is the way that the 2 units are connected. The connecting cable is stiff and awkward, not so much that I won't use it, I just don't like the cord. I wish there was a better way to connect the two units. If I knew that I was going to need the additional power, I would have gotten a single bigger unit to begin with.

I really like the portability with an additional 720 watt hours of back up to double the system capacity when needed.