I have an older Minuteman Pro 520 UPS which is insufficient to run a big computer tower with multiple hard drives but which is perfect for keeping the cable modem, VoIP line, and wifi router alive for an extended period during a power outage. That way, if you're doing something important when the power fails, you can keep working for a little while before shutting everything down. This is particularly important if you have a wireless backup hard drive. The last thing you want is to lose power in the midst of a hard drive backing up, so a smaller UPS on that equipment is a great investment.
These batteries last anywhere from 5-7 years in my experience. The battery here is precisely as described; my rating is based upon my last purchase of the same model, which was almost 8 years ago. The UPS red light went on indicating that the battery was no longer up to spec and I bought the new one. The price point here makes it a no-brainer to replace the battery rather than the entire UPS. One screw to remove the access panel and the battery terminals are designed to allow the wires to be slipped off easily. Just make sure you don't reverse the polarity - straightforward with the colorcodes on the terminals. 12 Volt 7 ah Rechargeable Battery with F1 (.187") Terminals
This was to replace the backup battery in my alarm system. It's a perfect fit, works great, but as it turned out, the old battery still had some life in it! After a recharge, it was fine. Bought this after "troubleshooting" with the alarm company who saw a system error and thought it was this battery. It wasn't (I found that it was a key fob battery going low), but at least now I have an excellent backup, just in case! - Battery Pack - Battery Switches - Fios Replacement Battery - Solar Panel'
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