Title: Lasted 3 years as BACKUP
Product review: I used these as backup batteries in AC powered smoke detectors in hard to reach places. Both detectors show that they are getting AC power. However, even as backup batteries, they lasted only 3 years. Whether this is due to the design of the detectors or a fault of the batteries is unknown, but it's dissapointing nonetheless. Especially since it decided to start beeping at 2 AM.
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