I need to purchase a computer that needs to left on permanently (i.e. 24h a day every day) but ideally needs to have 8h+ (emergency) operation in the event of a power-cut. Is it worth considering a laptop that is left on permanently, or will the battery become useless with continuous charging?
An alternative may be a desktop PC and Uninterrupted Power Supply, but I believe that a UPS will only offer an hour or so of power?
Any advice would be appreciated!