Great battery, integration with the power station is very easy and all well made. I love that you can build up to a capacity for your home or other application. Newest firmware charging behavior is great too. Just be aware of the weight when planning how you will use/store/move, as they don’t have wheels like the main power station.

Un-packed it and plugged it in, done. Cord provided. Doubled my backup capacity in an instant. Great clean look too. Love this system. Looking forward to future expansions.

We use the F3800 for a whole home backup. Without the addon battery it would last about 6 hours. Now it will power the house for 12 hours.

good

Easy peasy setup. Just plug it into your 3800 and you’re done! Don’t even have to install in setup…excellent!