Most AGM or GEL battery's last between 3 to 7 years and LEAD ACID most of the times even less.
We are offering a new kind of lithium battery " Lithium Titanate Oxide " (LTO).
LTO's are very safe even while punctured or dammaged will not react badly. The greatest feature is there very long life Over 20'000 cycles(at 100% DOD) before there capacity gets reduced to around 80% of the starting capacity.
They can handle up to 10C charge and discharge current. There lighter weight, at about 60% of Lead acid/Gel/AGM for same capacity while also taking up less space for same capacity.