The big benefit lead acid batteries have is that it's easy to find surplus SLA batteries from businesses, and even new cells aren't that expensive. That said,

The big benefit lead acid batteries have is that it's easy to find surplus SLA batteries from businesses, and even new cells aren't that expensive. That said, I've started seeing lithium batteries slowly catch on in amateur radio as the price on the LiFePo4 cells go down. Especially for portable setups.