ImGeo
Newly Enlightened
- Joined
- Mar 7, 2009
- Messages
- 117
THE BELOW INFO IS INACCURATE, SINCE I DID NOT TAKE INTO CONSIDERATION THE OUTPUT Vf VOLTAGES, AND ONLY LOOKED AT mAh.
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On the Quark AA^2, at max of 700ma, the runtime is only 1.3 hours, suggesting a power usage of 0.91mAh (1.3hr*.7A). What happened to the rest of the battery's capacity?!
Spreadsheet, formatted as: Mode, mA (to LED), hours, capacity (mAh)
If the driver had high efficiency, then the Quark AA(^2) should have close to 2.00mAh, but the surprisingly low values suggest 63% efficiency (AA^2 on med) and 21% efficiency (AA on max). Even the Quark 123 which has similar voltages to the Vf has similar results.
For your reference:
Quark AA^2: http://www.4sevens.com/product_info.php?cPath=297&products_id=1620
Quark AA: http://www.4sevens.com/product_info.php?cPath=297_305&products_id=1597
__________________
On the Quark AA^2, at max of 700ma, the runtime is only 1.3 hours, suggesting a power usage of 0.91mAh (1.3hr*.7A). What happened to the rest of the battery's capacity?!
Spreadsheet, formatted as: Mode, mA (to LED), hours, capacity (mAh)
If the driver had high efficiency, then the Quark AA(^2) should have close to 2.00mAh, but the surprisingly low values suggest 63% efficiency (AA^2 on med) and 21% efficiency (AA on max). Even the Quark 123 which has similar voltages to the Vf has similar results.
For your reference:
Quark AA^2: http://www.4sevens.com/product_info.php?cPath=297&products_id=1620
Quark AA: http://www.4sevens.com/product_info.php?cPath=297_305&products_id=1597
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