There are few tips for all the readers not only for your car batteries but this is applicable for other batteries like solar panel batteries, inverter based batteries etc also.
Regular check up of distill water and routine topping up of the batteries whenever required.
Insulation of the terminals properly to avoid short-circuit.
All connections to the batteries should be firm and tight.
Always go for branded and company products.
Routine check up and servicing of your equipment for validity and warranty. Hope this much information is useful for all the readers. Thanks. Keep reading. More to come.