Yes, SLA (sealed lead acid) batteries and VLRA (Valve Regulated Lead Acid) batteries are two different names for the same thing.
Both refer to a fully-rechargeable battery containing electro-chemical cells. This battery type is sealed to prevent electrolyte leakage and requires no maintenance. Most of these batteries have a vent built-in to the battery to help release internal battery pressure that can build up as a result of over-charging.
