An intelligent UPS battery life degrades over time, necessitating a replacement about every three years.
425VA / 225W battery backup power supply 6 Outlets (NEMA 5-15R): 4 UPS Battery Backup and Surge Protection; 2 Outlets with Surge Protection only 5
APC UPS Battery Backup Surge Protector, 425VA Backup Battery Power Supply, BE425M
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