If you're out in the field and it begins to rain, make absolutely certain the battery cavity in the hard shell backpack stays dry. The battery sits squarely on the bottom and any water that accumulates will cause the battery to short.
It happened to me and ruined two batteries. It didn't take much rain to form a puddle down there.
It happened to me and ruined two batteries. It didn't take much rain to form a puddle down there.