This one seems like it would be pretty cool for battery monitoring, but we never found the time to power it up and put it through its paces. They are for sale on Amazon and seem to have some good reviews, but we can’t speak on that.

Can’t guarantee that it works because we never powered it up…it’s still in its original box and all we ever did was open it and look at it for a few minutes, then put it onto the “later” bench. It’s another one of those cheap import products to say the least…