The points in favor of the ZBM which agreed are not fully proven:
Has a 10 year warranty guaranteeing it will be performing as well as when it was bought. Verified by extreme tests that are equivalant to that period of time.
Able to be discharged to 0% and recharged to 100% in the one day.
Doesn't lose charge over time. No need to be topped up.
Environmentally friendly. Made of plastic which can be recycled and Zinc Bromine which is not environmentally hazardous.
These are the advantages over the current available batteries: Lithium and Lead Acid.