We had electronics and power tools on li-ion power widely available for two decades now, yet UPS remain on lead acid in 2020? Why?
In: Technology
Lithium ion batteries are much more expensive then lead acid batteries. Last time I checked the price including delivery it would be twice as expensive. In addition there are several issues and unknowns related to storing lithium ion batteries fully charged unattended for years at a time. We have far more experience with lead acid batteries in these conditions and have resolved almost all issues with this. So when weight and volume is not a huge issue such as in a UPS or off the grid house then lead acid batteries are still preferred.
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