davidefromitaly
Enlightened
warning
this are datas read on my instruments, may be inaccurate, i have only 4 batteries of every type, maybe one or more of them are damaged and give weakest results, my methodology is different from the IEC standard so may give different results
shoot-out updated at 13 feb 2010
uncompressed file 5.28MB
http://www.speedyshare.com/files/20922732/ultimate_battery_shoot_out.xls
the same file but compressed 33KB
http://www.speedyshare.com/files/20922733/ultimate_battery_shoot_out.xls.7z
download the file and open with excel or calc or compatible
ask if you don't understand something
how to read the spreadsheet
Cycles: are the cycle of discharge and charge, from the first discharge out from the box until they die
routine charge: is the charge method used for the battery if nothing else is write in the cycle column
routine discharge: is the discharge method used for the battery if nothing else is write in the cycle column
D. 1A [start-1.1V-0.8V-average]: this mean Discharge at 1A, i will write in the four box under the battery the starting voltage without load, the mAh erogated by the battery until it reach 1.1 and 0.8V with load, the average voltage with load (if you multiply the average voltage with the mAh you find the total energy that the battery can store)
C. routine [start-peak-mAh-dT]: this mean Charge with method described under the battery description like "routine charge", i will write in the four box under the battery the starting voltage without load, the peak voltage with load during the charge, the mAh erogated by the charger, the difference in temperature from the start to the end of the charge
in the discharge description there is also the time after the last charge start the discharge, can be 24 hours or 30 days or something else
the readings of voltage under load are made directly from the battery for avoid the resistance of the wires that takes some mV
charges and discharges are made without a cooling fan except the charge at 5A where i use a fan but at a very low speed just for move the air in the charger that is quite closed
this are datas read on my instruments, may be inaccurate, i have only 4 batteries of every type, maybe one or more of them are damaged and give weakest results, my methodology is different from the IEC standard so may give different results
shoot-out updated at 13 feb 2010
uncompressed file 5.28MB
http://www.speedyshare.com/files/20922732/ultimate_battery_shoot_out.xls
the same file but compressed 33KB
http://www.speedyshare.com/files/20922733/ultimate_battery_shoot_out.xls.7z
download the file and open with excel or calc or compatible
ask if you don't understand something
how to read the spreadsheet
Cycles: are the cycle of discharge and charge, from the first discharge out from the box until they die
routine charge: is the charge method used for the battery if nothing else is write in the cycle column
routine discharge: is the discharge method used for the battery if nothing else is write in the cycle column
D. 1A [start-1.1V-0.8V-average]: this mean Discharge at 1A, i will write in the four box under the battery the starting voltage without load, the mAh erogated by the battery until it reach 1.1 and 0.8V with load, the average voltage with load (if you multiply the average voltage with the mAh you find the total energy that the battery can store)
C. routine [start-peak-mAh-dT]: this mean Charge with method described under the battery description like "routine charge", i will write in the four box under the battery the starting voltage without load, the peak voltage with load during the charge, the mAh erogated by the charger, the difference in temperature from the start to the end of the charge
in the discharge description there is also the time after the last charge start the discharge, can be 24 hours or 30 days or something else
the readings of voltage under load are made directly from the battery for avoid the resistance of the wires that takes some mV
charges and discharges are made without a cooling fan except the charge at 5A where i use a fan but at a very low speed just for move the air in the charger that is quite closed
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