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Roomba Power Comsumption Question

Roomba Power Comsumption Question

Roomba Power Comsumption Question

I have a vacuum robot (Roomba 650). The robot cleans the house daily for an hour then goes back to it's station to charge. This cycle is repeated daily. How can I find out how much electricity it is costing me for it to charge for 16 hours?

The charging stand says:

Input power: 33W
Output: 22.5V 1.25A


RE: Roomba Power Comsumption Question

33 watts x 16 hours = 528 watt-hrs

Typically electricity costs $0.10 to $0.20 per kWhr, so roughly about 10 cents per day.

RE: Roomba Power Comsumption Question

I would assume a battery powered device probably takes only a couple hours to charge, at which point the charger would go to a lower power state. so, 33 watts x 2 hour + 1 watt (a guess) x (16-2) hours = 80 watt-hours. All newer plug-in electronic widgets are required to have low power consumption when not actually operating (e.g. Energy Star requirements).

RE: Roomba Power Comsumption Question

The Roombas I have examined are actually sweepers, so it's not really correct to call it a vacuum.

Mike Halloran
Pembroke Pines, FL, USA

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