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Thanks for great review. I still wonder why there is no PSU manufacturer that makes PSUs with integrated UPS. Batteries could be stored in 5.25"drive bays. That way unnecessary power conversions could be avoided (UPS is converting 12VDC to 230VAC then power goes to power supply and power supply is converting it back to 12VDC)
Such solution could be cheaper than dedicated PSU + dedicated UPS. Simply because some unnecessary power conversions could be avoided so less electronics is needed.
And i have one suggestion, could you please add to reviews if output capacitors can be upgraded and if yes how? Many PSUs share the same PCBs and on lower models are some capacitors not present. By adding the missing capacitors you could cheaply extend hold-up time.
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