Saturday, February 9, 2013

Ultrafire 18350 1200mA

Brand new


Well this battery lasted only 36 minutes with a 1200mA load. It's rated around 60% at 1C.
Note the weird temperature rise as the current drops, usually when the current drops during charging the temperature also drops, in this battery the opposite happened and then it fell, Here is some data.

Fail!    Low capacity; Capacity=719,4 mAh (59,9% rated); Energy=2,529 Wh

Summary:
1. One Hour Discharge: Fail: Low capacity; Capacity=722,4 mAh (60,2% rated); Energy=2,544 Wh; IPV=3,937V; MPV=3,443V; EPV=2,753V; MPI=1,195 A.
2. Lithium-ion Charge: Capacity=745,6 mAh (62,1% rated); Energy=3,058 Wh.
3. One Hour Discharge: Fail: Low capacity; Capacity=719,4 mAh (59,9% rated); Energy=2,529 Wh; IPV=3,952V; MPV=3,430V; EPV=2,754V; MPI=1,195 A.
4. Li-ion 30% Charge: Capacity=360,2 mAh (30,0% rated); Energy=1,447 Wh.
__________________

One Hour Discharge
  Duration (h:m:s): 00:36:16
  Load current: 1,195 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 722,4 mAh
  Battery discharged energy: 2,544 Wh
  Battery initial-point voltage: 3,937 V
  Battery mid-point voltage: 3,443 V
  Battery end-point voltage: 2,753 V
  Battery midpoint current: 1,195 A
  Exit condition: Battery cut-off voltage reached.


Lithium-ion Charge
  Duration (h:m:s): 01:35:14
  Charge current: 840,0 mA
  Charge voltage: 4,200 V
  Battery charged capacity: 745,6 mAh
  Battery charged energy: 3,058 Wh
  Exit condition: Final charge current reached.


One Hour Discharge
  Duration (h:m:s): 00:36:07
  Load current: 1,195 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 719,4 mAh
  Battery discharged energy: 2,529 Wh
  Battery initial-point voltage: 3,952 V
  Battery mid-point voltage: 3,430 V
  Battery end-point voltage: 2,754 V
  Battery midpoint current: 1,195 A
  Exit condition: Battery cut-off voltage reached.


Li-ion 30% Charge
  Duration (h:m:s): 00:26:00
  Charge current: 840,0 mA
  Charge voltage: 4,200 V
  Battery charged capacity: 360,2 mAh
  Battery charged energy: 1,447 Wh
  Exit condition: Maximum charge reached.



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