Can I retrofit my current sealed lead acid battery caddy or upgrade later from a SLA to a lithium?

Can I retrofit my current sealed lead acid battery caddy or upgrade later from a SLA to a lithium?

Bat-Caddy: Yes. All our caddies are designed to operate with a 12V system compatible with both SLA and our special lithium chemistry battery. Other caddies are using a 24V lithium system which prevents the switch.