Tuesday, February 26, 2013

Testing bigger batteries


Monday, February 25, 2013

Eneloop XX (AAA) 900mAh test

These batteries performed excellent too (99.0%). Last of the eneloops i tested.
Here is the data Eneloop XX AAA

Sanyo Eneloop (AA) 1900mAh test

Excellent batteries, performed 102.0%!!!!!
Remember anything above 80% is fine but this was amazing.

Usually the first discharge is out of the box and the batteries perform a little lower, after charging with the analyzer during the routine the battery is more refreshed and performs almost full.
Here is the data Eneloop AA

I also have to thank Ms Anita Gross from Eneloop Sales & marketing division who sent me samples of their batteries. Excellent customer service (pretty fast too) and they were happy to answer all my questions.

Sunday, February 24, 2013

Testing batteries


Sanyo Eneloop (AAA) 750mAh discharge test


Out of the box they gave me 100.5% when discharged the second time. Excellent performance.
Here is the data Eneloop AAA 750mAh

Sanyo Eneloop XX (AA) 2450mAh 1C discharge test


If not the best, probably one of the best batteries on the galaxy.
This battery straight out of the box gave me 91% and then after a charge it gave me 97.9%. I'm pretty sure if cycled one or two times more it will reach 100% or more but i am having the analyzer testing two AAA eneloops right now so i may test later.
Get the test data here Sanyo Eneloop XX (AA)

Sunday, February 17, 2013

J.W.S 26650 0.96C (5A) test

That one failed.
Fail!    Low capacity; Capacity=1,218 Ah (23,4% rated)

Summary:
1. Initial No-Load Voltage: .
2. One Hour Discharge: Fail: Low capacity; Capacity=1,245 Ah (24,0% rated).
3. 10 Minute Rest: .
4. Lithium-ion Prequalify: .
5. Lithium-ion Charge: Capacity=1,291 Ah (24,8% rated).
6. One Hour Discharge: Fail: Low capacity; Capacity=1,218 Ah (23,4% rated).
7. 10 Minute Rest: .
8. Li-ion Prequalify: .
9. Li-ion 30% Charge: User requested stop; Capacity=503,3 mAh (9,7% rated).
__________________

Initial No-Load Voltage
Duration (h:m:s): 00:02:00
Cut-off voltage: -1,000 V
Exit condition: Maximum time reached.
One Hour Discharge
Duration (h:m:s): 00:14:56
Load current: 5,003 A
Cut-off voltage: 2,750 V
Battery discharged capacity: 1,245 Ah
Exit condition: Battery cut-off voltage reached.
10 Minute Rest
Duration (h:m:s): 00:10:00
Cut-off voltage: -1,000 V
Exit condition: Maximum time reached.
Lithium-ion Prequalify
Duration (h:m:s): 00:00:03
Charge current: 530,0 mA
Exit condition: MaxV
Lithium-ion Charge
Duration (h:m:s): 01:25:15
Charge current: 3,640 A
Charge voltage: 4,200 V
Battery charged capacity: 1,291 Ah
Exit condition: Final charge current reached.
Discharge/ Charge Cycle
Branching 1st time.
One Hour Discharge
Duration (h:m:s): 00:14:36
Load current: 5,003 A
Cut-off voltage: 2,750 V
Battery discharged capacity: 1,218 Ah
Exit condition: Battery cut-off voltage reached.
10 Minute Rest
Duration (h:m:s): 00:10:01
Cut-off voltage: -1,000 V
Exit condition: Maximum time reached.
Li-ion Prequalify
Duration (h:m:s): 00:00:03
Charge current: 529,5 mA
Exit condition: MaxV
Li-ion 30% Charge
Duration (h:m:s): 00:11:39
Charge current: 3,640 A
Charge voltage: 4,200 V
Battery charged capacity: 503,3 mAh
Exit condition: User requested to stop the analysis.




Saturday, February 9, 2013

Samsung INR18650-15Q 3.33C (5A) Test

At 3.33C (5A) loads

At 1C (1500mA) loads

Samsung has this model which has a 18A discharge rate, At 3.33C (5Amps) it performs similar to the panasonic CGR18650CH but only for 17 minutes. It performs with around 96-93% capacity and the temperature is quite low (mostly because of the high discharge rate it didn't bother much). Here is some data at 5A loads

Pass!    Capacity=1,398 Ah (93,2% rated); Energy=4,663 Wh

Summary:
1. One Hour Discharge: Pass; Capacity=1,440 Ah (96,0% rated); Energy=4,805 Wh; IPV=3,787V; MPV=3,377V; EPV=2,756V; MPI=5,003 A.
2. Lithium-ion Charge: Capacity=1,416 Ah (94,4% rated); Energy=5,552 Wh.
3. One Hour Discharge: Pass; Capacity=1,398 Ah (93,2% rated); Energy=4,663 Wh; IPV=3,775V; MPV=3,377V; EPV=2,751V; MPI=5,003 A.
4. Li-ion 30% Charge: Capacity=450,2 mAh (30,0% rated); Energy=1,637 Wh.
__________________

One Hour Discharge
  Duration (h:m:s): 00:17:16
  Load current: 5,003 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 1,440 Ah
  Battery discharged energy: 4,805 Wh
  Battery initial-point voltage: 3,787 V
  Battery mid-point voltage: 3,377 V
  Battery end-point voltage: 2,756 V
  Battery midpoint current: 5,003 A
  Exit condition: Battery cut-off voltage reached.

Lithium-ion Charge
  Duration (h:m:s): 01:37:24
  Charge current: 1,050 A
  Charge voltage: 4,200 V
  Battery charged capacity: 1,416 Ah
  Battery charged energy: 5,552 Wh
  Exit condition: Final charge current reached.


One Hour Discharge
  Duration (h:m:s): 00:16:46
  Load current: 5,003 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 1,398 Ah
  Battery discharged energy: 4,663 Wh
  Battery initial-point voltage: 3,775 V
  Battery mid-point voltage: 3,377 V
  Battery end-point voltage: 2,751 V
  Battery midpoint current: 5,003 A
  Exit condition: Battery cut-off voltage reached.


Li-ion 30% Charge
  Duration (h:m:s): 00:25:50
  Charge current: 1,050 A
  Charge voltage: 4,200 V
  Battery charged capacity: 450,2 mAh
  Battery charged energy: 1,637 Wh
  Exit condition: Maximum charge reached.

And here data for 1C loads


Pass!    Capacity=1,420 Ah (94,7% rated); Energy=5,135 Wh

Summary:
1. One Hour Discharge: Pass; Capacity=1,468 Ah (97,9% rated); Energy=5,317 Wh; IPV=4,116V; MPV=3,342V; EPV=2,756V; MPI=1,496 A.
2. Lithium-ion Charge: Capacity=1,463 Ah (97,6% rated); Energy=5,720 Wh.
3. One Hour Discharge: Pass; Capacity=1,420 Ah (94,7% rated); Energy=5,135 Wh; IPV=4,073V; MPV=3,346V; EPV=2,753V; MPI=1,496 A.
4. Li-ion 30% Charge: Capacity=450,1 mAh (30,0% rated); Energy=1,627 Wh.


One Hour Discharge
  Duration (h:m:s): 00:58:51
  Load current: 1,497 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 1,468 Ah
  Battery discharged energy: 5,317 Wh
  Battery initial-point voltage: 4,116 V
  Battery mid-point voltage: 3,342 V
  Battery end-point voltage: 2,756 V
  Battery midpoint current: 1,496 A
  Exit condition: Battery cut-off voltage reached.


Lithium-ion Charge
  Duration (h:m:s): 01:41:16
  Charge current: 1,050 A
  Charge voltage: 4,200 V
  Battery charged capacity: 1,463 Ah
  Battery charged energy: 5,720 Wh
  Exit condition: Final charge current reached.


One Hour Discharge
  Duration (h:m:s): 00:56:56
  Load current: 1,497 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 1,420 Ah
  Battery discharged energy: 5,135 Wh
  Battery initial-point voltage: 4,073 V
  Battery mid-point voltage: 3,346 V
  Battery end-point voltage: 2,753 V
  Battery midpoint current: 1,496 A
  Exit condition: Battery cut-off voltage reached.


Li-ion 30% Charge
  Duration (h:m:s): 00:26:02
  Charge current: 1,050 A
  Charge voltage: 4,200 V
  Battery charged capacity: 450,1 mAh
  Battery charged energy: 1,627 Wh
  Exit condition: Maximum charge reached.





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.



Friday, February 8, 2013

TrustFire 16340 880mAh 1C test (one crappy battery)


Click on the picture for details.

Well this was a crappy one. This is a brand new trustFire 16340 battery. This unit only gave me 29% of the charge. Very poor characteristics and it gets heated up to 34 Celcius at 1C discharge rate.
Very poor performance and it didn't even make it for an hour. Note the weird charge curve too.

1. One Hour Discharge: Fail: Low capacity; Capacity=256,9 mAh (29,2% rated).
2. Lithium-ion Charge: Capacity=225,0 mAh (25,6% rated).
3. One Hour Discharge: Fail: Low capacity; Capacity=235,4 mAh (26,7% rated).
4. Li-ion 30% Charge: Capacity=220,1 mAh (25,0% rated).

First Discharge.


One Hour Discharge
  Duration (h:m:s): 00:17:32
  Load current: 879,0 mA
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 256,9 mAh
  Battery discharged energy: 795,7 mWh
  Battery initial-point voltage: 3,741 V
  Battery mid-point voltage: 3,086 V
  Battery end-point voltage: 2,751 V
  Battery midpoint current: 878,8 mA
  Exit condition: Battery cut-off voltage reached.


Second Discharge


One Hour Discharge
  Duration (h:m:s): 00:16:04
  Load current: 879,0 mA
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 235,4 mAh
  Battery discharged energy: 762,3 mWh
  Battery initial-point voltage: 3,934 V
  Battery mid-point voltage: 3,123 V
  Battery end-point voltage: 2,750 V
  Battery midpoint current: 878,6 mA
  Exit condition: Battery cut-off voltage reached.

Note: The temperature is unusually too high.


Panasonic CGR18650CH 2.22C (5A) test

Discharge curves at 5C

Discharge curves at 1C

Above you can see the test curves plotted by the Vencon analyzer.
Please disregard that temp spike in the middle, it happened because i touched the sensor.

Initial No-Load Voltage
  Duration (h:m:s): 00:02:00
  
That is the start of the test.

One Hour Discharge
  Duration (h:m:s): 00:25:13
  Load current: 5,003 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 2,103 Ah
  Exit condition: Battery cut-off voltage reached.

The battery gave me 2.103Ah for 25 minutes continuously, note the temperature rise, it has reached around 36 Celcius.
Then there is a 10 minute rest, the temperature starts to fall now.
Then there is a pre-qualify charge which finishes in a few seconds and the main charge starts.


At 2.22C (5A) loads

Lithium-ion Charge
  Duration (h:m:s): 01:46:26
  Charge current: 1,575 A
  Charge voltage: 4,200 V
  Battery charged capacity: 2,124 Ah
  Battery charged energy: 8,351 Wh
  Exit condition: Final charge current reached.

This took 1 hour and 46 minutes.
After charging the 5A discharge took place one more time.


One Hour Discharge
  Duration (h:m:s): 00:25:13
  Load current: 5,003 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 2,103 Ah
  Battery discharged energy: 6,773 Wh
  Battery initial-point voltage: 3,734 V
  Battery mid-point voltage: 3,135 V
  Battery end-point voltage: 2,752 V
  Battery midpoint current: 5,003 A
  Exit condition: Battery cut-off voltage reached.


Pass!    Capacity=2,086 Ah (92,7% rated); Energy=6,744 Wh


Summary:
1. One Hour Discharge: Pass; Capacity=2,103 Ah (93,5% rated); Energy=6,773 Wh; IPV=3,734V; MPV=3,135V; EPV=2,752V; MPI=5,003 A.
2. Lithium-ion Charge: Capacity=2,124 Ah (94,4% rated); Energy=8,351 Wh.
3. One Hour Discharge: Pass; Capacity=2,086 Ah (92,7% rated); Energy=6,744 Wh; IPV=3,762V; MPV=3,149V; EPV=2,751V; MPI=5,003 A.
4. Li-ion 30% Charge: Capacity=675,1 mAh (30,0% rated); Energy=2,520 Wh.

At 1C (2250mA) loads


Pass!    Capacity=2,103 Ah (93,4% rated); Energy=7,302 Wh

Summary:
1. One Hour Discharge: Pass; Capacity=2,186 Ah (97,2% rated); Energy=7,611 Wh; IPV=4,013V; MPV=3,264V; EPV=2,752V; MPI=2,250 A.
2. Lithium-ion Charge: Capacity=2,130 Ah (94,7% rated); Energy=8,334 Wh.
3. One Hour Discharge: Pass; Capacity=2,103 Ah (93,4% rated); Energy=7,302 Wh; IPV=4,000V; MPV=3,268V; EPV=2,753V; MPI=2,250 A.
4. Li-ion 30% Charge: Capacity=675,3 mAh (30,0% rated); Energy=2,505 Wh.

One Hour Discharge
  Duration (h:m:s): 00:58:18
  Load current: 2,250 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 2,186 Ah
  Battery discharged energy: 7,611 Wh
  Battery initial-point voltage: 4,013 V
  Battery mid-point voltage: 3,264 V
  Battery end-point voltage: 2,752 V
  Battery midpoint current: 2,250 A
  Exit condition: Battery cut-off voltage reached.

Lithium-ion Charge
  Duration (h:m:s): 02:05:07
  Charge current: 1,575 A
  Charge voltage: 4,200 V
  Battery charged capacity: 2,130 Ah
  Battery charged energy: 8,334 Wh
  Exit condition: Final charge current reached.


One Hour Discharge
  Duration (h:m:s): 00:56:04
  Load current: 2,250 A
  Cut-off voltage: 2,750 V
  Battery discharged capacity: 2,103 Ah
  Battery discharged energy: 7,302 Wh
  Battery initial-point voltage: 4,000 V
  Battery mid-point voltage: 3,268 V
  Battery end-point voltage: 2,753 V
  Battery midpoint current: 2,250 A
  Exit condition: Battery cut-off voltage reached.


Li-ion 30% Charge
  Duration (h:m:s): 00:32:17
  Charge current: 1,575 A
  Charge voltage: 4,200 V
  Battery charged capacity: 675,3 mAh
  Battery charged energy: 2,505 Wh
  Exit condition: Maximum charge reached.



This battery has been rated around 92-93% capacity when discharged at 5Amps and 97 to 93% at 1C which seems to be great (i got 95% with a different battery at 5A). Anything above 80% seems to be OK but i prefer to get the most. After that the analyzer charges the battery up to 30% for storage mostly. Soon i'll be able to discharge at maximum rates (10A for the panasonic.) Also take a note on the temperature and how it varies depending on the current.