Was kind of tricky to get a measurement on the cells but I was able too.
The 1.8A draw is from the cells themselves not the 5V usb. In the tech specs it says that the usb is pushing 5V at 800mA to the cellphone. Depending on type of phone. If a smartphone let say requires 700mA like what my blackberry AC adapter says 5V 700mA.
This mobile USB charger pushes 800mA to the phone. The AA cells are going to be working hard to not only maintain the booster at a 5v output but also at a constant 800mA too. The Up Voltage booster is really putting a heavy strain on the AA cells. Sometimes the booster would make a pitching noise but very faint.
In the specs it says you can use 2AA or 4AA. Would highly recommend to use all 4. Using only 2 cells is going to be brutal for them. Its already a heavy draw with 4 already, imagine only using 2AA lol.
The bold 9700 ruined my Ansmann cells. The draw was just too high lol. My old blackberry curve only needed 5v at 500mAh. In fact the mobile USB charger would not only top off the curve. I would still have leftover charge to spare on the ansmann cells for another round before I have to put them in the charger. Would have to discharge the remaining charge if I decide to charge the AA cells.
Bold in the other hand can't even top it off though close to fully charged. Cells in the charger are fully discharged. In fact I do not need to discharge the AA cells anymore before charging lol.
These up voltage boosters needs to be better of its efficiency and less strain on the AA cells. Should be a mobile charger with a quad booster that uses 8AA cells. That way each booster gets its own pair of cells. Then have all 4 boosters in parallel to avoid heavy strain on the poor AA cells. Eneloops would be perfect for this task. As it stand this mobile charger has 2 boosters. Great concept but need more boosters.
The 1.8A draw is from the cells themselves not the 5V usb. In the tech specs it says that the usb is pushing 5V at 800mA to the cellphone. Depending on type of phone. If a smartphone let say requires 700mA like what my blackberry AC adapter says 5V 700mA.
This mobile USB charger pushes 800mA to the phone. The AA cells are going to be working hard to not only maintain the booster at a 5v output but also at a constant 800mA too. The Up Voltage booster is really putting a heavy strain on the AA cells. Sometimes the booster would make a pitching noise but very faint.
In the specs it says you can use 2AA or 4AA. Would highly recommend to use all 4. Using only 2 cells is going to be brutal for them. Its already a heavy draw with 4 already, imagine only using 2AA lol.
The bold 9700 ruined my Ansmann cells. The draw was just too high lol. My old blackberry curve only needed 5v at 500mAh. In fact the mobile USB charger would not only top off the curve. I would still have leftover charge to spare on the ansmann cells for another round before I have to put them in the charger. Would have to discharge the remaining charge if I decide to charge the AA cells.
Bold in the other hand can't even top it off though close to fully charged. Cells in the charger are fully discharged. In fact I do not need to discharge the AA cells anymore before charging lol.
These up voltage boosters needs to be better of its efficiency and less strain on the AA cells. Should be a mobile charger with a quad booster that uses 8AA cells. That way each booster gets its own pair of cells. Then have all 4 boosters in parallel to avoid heavy strain on the poor AA cells. Eneloops would be perfect for this task. As it stand this mobile charger has 2 boosters. Great concept but need more boosters.
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