Bought this battery for Electric Bike Project #2. This is one of my unfinished projects. Hope to complete it real soon.
Back in 2007 I charged and discharged a few times. After that battery just sat. Now the charger that came with battery will not charge. I charged each cell separately with Hyperion EOS 1420i NET3 Charger. Cell number 8 is dead and swollen. Cell number 7 is swollen a little on the bottom.
I need to buy 2 cells. Ypedal, do you got any cells for sale?
Test with CBA III - Computerized Battery Analyzer
Attached please see PDF file 48V_20Ah_test1
View attachment 48V_20Ah_test1.pdf
cel01:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/15/2012 9:44 PM
Discharge Rate: 20.00 A
Starting Voltage: 4.00 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:31:06
Tested Capacity: 10.423 Ah
cel02:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/15/2012 10:34 PM
Discharge Rate: 20.00 A
Starting Voltage: 4.00 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:40:47
Tested Capacity: 13.665 Ah
cel03:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 7:49 AM
Discharge Rate: 20.00 A
Starting Voltage: 4.00 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:37:04
Tested Capacity: 12.419 Ah
cel04:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 8:40 AM
Discharge Rate: 20.00 A
Starting Voltage: 4.02 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:39:54
Tested Capacity: 13.369 Ah
cel05:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 9:39 AM
Discharge Rate: 20.00 A
Starting Voltage: 4.00 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:35:20
Tested Capacity: 11.837 Ah
cel06:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 5:57 PM
Discharge Rate: 20.00 A
Starting Voltage: 3.97 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:34:23
Tested Capacity: 11.519 Ah
cel07:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 6:43 PM
Discharge Rate: 20.00 A
Starting Voltage: 4.02 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:27:54
Tested Capacity: 9.344 Ah
cel08:
cel09:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 8:18 PM
Discharge Rate: 20.00 A
Starting Voltage: 3.99 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:31:22
Tested Capacity: 10.507 Ah
cel10:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/16/2012 8:57 PM
Discharge Rate: 20.00 A
Starting Voltage: 4.03 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:44:16
Tested Capacity: 14.833 Ah
cel11:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/17/2012 8:48 AM
Discharge Rate: 20.00 A
Starting Voltage: 4.01 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:34:38
Tested Capacity: 11.602 Ah
cel12:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/17/2012 9:34 AM
Discharge Rate: 20.00 A
Starting Voltage: 3.99 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:34:42
Tested Capacity: 11.625 Ah
cel13:
Description: 1 Li-ion cell, 20.0 Ah @ 20.00A
Started At: 4/18/2012 8:36 AM
Discharge Rate: 20.00 A
Starting Voltage: 4.01 V
Ending Voltage: 2.80 V
Total Time (hh:mm:ss): 00:39:18
Tested Capacity: 13.168 Ah