Well I did some more research on power consumption. Caretu mentioned Toshiba said their slowest USB Flash drive uses 80mA. I found on the PNY site that they list their usb flash drives as using 1mA in standyby mode and 190mA for high speed or 150mA for full speed. I haven't tested the power consumption of the MR3020 nor do I plan on doing so, but according to USB specifications the power consumption should be between 500mA and 900mA. So if we account for a worst case scenario the 900mA for the MR3020 plus the 135mA (average of 190mA and 80mA) for the usb flash drive is 1090mA.
Putting this into my formula that others verified as a good ballpark equation you should have (mAh / 1035) x 0.7. Now if we add in the mentioned batteries so far we have:
SIIG 2400: (2400 / 1035) 0.7 = 1.62 hours
Aluratek APB01F: (5000 / 1035) x 0.7 = 3.38 hours
JuiceBar v1: (1500 / 1035) x 0.7 = 1.01 hours
Socaladam mentioned his SIIG 2400 barely lasted 8 hours. Also creighto mentioned that judging the power capacity off of the max power consumption is a poor idea. So let's go back and use the smallest power consumption for usb devices and still the max power consumption of usb flash drives.
SIIG 2400: (2400 / 635) x 0.7 = 2.64 hours
Aluratek APB01F: (5000 / 635) x 0.7 = 5.51 hours
JuiceBar v1: (1500 / 635) x 0.7 = 1.65 hours
This still does not match up with what Socaladam stated his SIIG 2400 achieved. For his the formula would be:
(2400 / 210 ) x 0.7 = 8 hours. If we subtract the average of 135 mA for the usb drive this means the MR3020 power is 75 mAh. If we continue and use the 75mAh for my JuiceBar it should run for (1500 / 210) x 0.7 = 5 hours.
As others have mentioned the age of the battery has a factor in it too. I tested out a Duracell Pocket USB Charger which max capacity of the battery was 500mAh. It did not last a full hour but it did last at least half an hour. I only connected to the piratebox a few times, and I did not download and files for a long period of time. I would say it is safe to say that the MR3020 does not use 500mA of power.
If we use my test with the Duracell Pocket USB Charger to estimate power the formula would look like this... (500 / 435 ) x 0.7 = 0.80 hours. 435 = 300 for power of MR3020 and 135 for power of USB flash drive. At the time of writing I have had my JuiceBar v1 powering my PirateBox for 2.5 hours. This also holds credence that the MR3020 does not use 500mA of power. (1500 / 435) x 0.7 = 2.41.
I will add another post once I find out how long my JuiceBar v1 lasts and comment on zerode wondering about solar power since my JuiceBar is solar rechargeable.
Putting this into my formula that others verified as a good ballpark equation you should have (mAh / 1035) x 0.7. Now if we add in the mentioned batteries so far we have:
SIIG 2400: (2400 / 1035) 0.7 = 1.62 hours
Aluratek APB01F: (5000 / 1035) x 0.7 = 3.38 hours
JuiceBar v1: (1500 / 1035) x 0.7 = 1.01 hours
Socaladam mentioned his SIIG 2400 barely lasted 8 hours. Also creighto mentioned that judging the power capacity off of the max power consumption is a poor idea. So let's go back and use the smallest power consumption for usb devices and still the max power consumption of usb flash drives.
SIIG 2400: (2400 / 635) x 0.7 = 2.64 hours
Aluratek APB01F: (5000 / 635) x 0.7 = 5.51 hours
JuiceBar v1: (1500 / 635) x 0.7 = 1.65 hours
This still does not match up with what Socaladam stated his SIIG 2400 achieved. For his the formula would be:
(2400 / 210 ) x 0.7 = 8 hours. If we subtract the average of 135 mA for the usb drive this means the MR3020 power is 75 mAh. If we continue and use the 75mAh for my JuiceBar it should run for (1500 / 210) x 0.7 = 5 hours.
As others have mentioned the age of the battery has a factor in it too. I tested out a Duracell Pocket USB Charger which max capacity of the battery was 500mAh. It did not last a full hour but it did last at least half an hour. I only connected to the piratebox a few times, and I did not download and files for a long period of time. I would say it is safe to say that the MR3020 does not use 500mA of power.
If we use my test with the Duracell Pocket USB Charger to estimate power the formula would look like this... (500 / 435 ) x 0.7 = 0.80 hours. 435 = 300 for power of MR3020 and 135 for power of USB flash drive. At the time of writing I have had my JuiceBar v1 powering my PirateBox for 2.5 hours. This also holds credence that the MR3020 does not use 500mA of power. (1500 / 435) x 0.7 = 2.41.
I will add another post once I find out how long my JuiceBar v1 lasts and comment on zerode wondering about solar power since my JuiceBar is solar rechargeable.