I like that it has an extended lifetime which makes it economical for our use.It also provides a lot of power so we are not always looking for more batteries but its good enough once you have used up your own capacity available with other units.I would say that if there was one thing i didn't particularly enjoy about this product it might just possibly be the initial set up process.But as soon as everyone gets their head around how easy they find everything then there's no problems at all.Its been great to use over the last few years.
We were having issues where our solar supply wasn't meeting demand during peak times due to batteries being too small. This provided us with extra capacity without adding any additional equipment or space needed.