Lead-acid battery technology is over 100 years old and has been proven to be reliable and relatively inexpensive. Based on your application (low mileage etc.) and budget, as well as maintenance routine, going for Lead could be a sensible option.
Looking back on our experience, if the batteries are correctly maintained, under a mild climate, the lifetime could go as far as 8 to 10 years.
If temperatures are an issue – as low as -20°C or as hot as 45°C – then the lead batteries are the preferred option.