Panasonic UP-VW1245P1 Black Large 12V 40 Watts Per Cell Battery with F2 Terminal

Panasonic batteries are the most reliable batteries that I have ever used. Every Panasonic brand rechargeable battery that I have ever used (NiMh, Nicad) has lasted at least 10 years, and I have used dozens. I expect this sealed lead acid battery to behave the same way.

Received the battery on schedule and installed it inot UPS. It worked just fine and the UPS is back in operation. Panasonic makes a quality battery.

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Battery backups are a bit pricey. Unfortunately, the battery typically only lasts for a couple of years. Although the manufacturer of mine advised me that my model didn't have a user-replaceable battery, they reluctantly informed me that this was the battery I would need. Replacing the battery really wasn't difficult (instead of a convenient slide-off panel, I had to remove a couple of screws and pull the whole case apart). I was happy to avoid the much higher cost of replacing the entire UPS. Seems to be working as expected. The UPS reports a full charge.

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