Holaday Industries 491198-48 Series User Manual page 6

Warning This battery charger incorporates parts, such
as a switch and relays, that are likely to
produce sparks or arcs.
charging a battery in a garage or in a similar
location, locate the battery charger in a room
or enclosure provided for this purpose, if
applicable.
Warning For indoor use only, do not expose to rain.
Therefore, when