The ZBM batts are not lead acid they use zinc and some other elements as far as I can remember.
They are very good but way too expensive for the average house. At 250kg for each batt they are extremely heavy as well and large.
They are much better for larger applications.
How much are the Graphene Capacitors each and how many would you need, what is their charge capacity, their voltage output and how long is the warranty.
