Re: Fixed APC Back UPS RS 1500 LCD (BR1500LCD) w/ 1 bad 22uF 400V cap

Same problem with mine! Bad 400v 22uf cap and swollen batteries!
I did some work on the side and top vents. They are molded in the bottom sides near the transformer and on the top. Very fine slots! Little air flow. Reason for little dust. They are so fine, dust will plug them up. I took a broken coping saw blade and cut them open about a 16th of a inch. You get ten times the convection air flow through the unit. It runs a lot cooler!