SilverFox
Flashaholic
123 Battery Shoot Out
Here is another series of tests, this time looking at Lithium CR123 primary cells. These are not rechargeable.
I picked a variety of batteries. My list is far from exhaustive, however I think this is a good representation. If anyone has a brand that I have missed and wants to donate them to the cause, get in touch with me. I'll test them and post the results.
Battery Capacities:
I am not sure at what load Lithium battery capacities are rated at. I know that many of our lights draw 1 to 2 amps, so I decided to test at those rates. Energizer rates their 123 cells at 1.5 Ah for reference.
Graph Nomenclature:
Ah = Amp Hours
Wh = Watt Hours
M = Minutes
The battery line up:
Duracell Ultra
Energizer
Sanyo
SureFire
Streamlight
BatteryStation
12/07 BatteryStation now Made in USA
Maxell Gold
GI
RayOVac
Titanium
Marathon
Golston
4/22/05 New Titanium Cells
8/6/05 New batch of Golston Cells
6/08 Panasonic 1550 mAh Made in USA
3/09 Panasonic 2017 from Europe
3/09 Fuji 2012 from Europe
A big thanks to JohnN and Dano for providing additional batteries for me to test - Thanks.
Another big thanks to Wayne at AmondoTech for providing additional batteries for me to include in the testing - Thanks.
Another big thanks to Chevrofreak for providing additional batteries for me to include in the testing - Thanks.
Another big thanks to Dae for providing some additional Golston cells for testing - Thanks.
Thanks to VWTim for picking up some Everlast Go Power cells for testing.
Thanks to Cdosrun for sending the Panasonic and Fuji cells from Europe.
The graphs:
Edit: 0.5 Amp Rate
123 at 1.0 Amp Rate
123 at 2.0 Amp Rate
Test conditions:
All tests were conducted at room temperature of about 68 degrees Fahrenheit utilizing a West Mountain Radio CBA.
All batteries are fresh stock.
Test Notes:
The tests at the 1.0 Amp Rate revealed a moderate battery temperature increase. The batteries ended up in the 85-88 degree F. range. The battery temperatures shot up during the 2.0 Amp Rate testing. I have my CBA set to terminate the test when the battery temperature exceeds 115 degrees F. The SureFire battery test was terminated early because the cell temperature exceeded 115 degrees. I watched the cell temperature continue to rise, after the test had been terminated, until it leveled out at 122 degrees. The SureFire cells were the only ones that exceeded 115 degrees, but all of the others were very close.
Conclusions:
These tests revealed some differences at higher current draws, but at lower levels, the differences seem minimal.
The Energizer cells were at the bottom of the pack. These were fresh cells and I am not sure what is going on with them. I would normally do additional tests on them, but I need to find a more reasonable source for them than the local store.
The eye opener for me was the temperature increase of the batteries when testing at 2 amps. I would venture an opinion that if a light draws 2 amps or more, thermal management is going to be difficult during long runs. The lamps and LED's are producing heat, and at these rates we have the batteries producing heat as well. Lithium cells have a thermal shut down protection system, and this may shed some light on why sudden shutdown occurs with some lights.
4/22/05 Wayne at AmondoTech was disappointed in the performance of his Titanium 123 cells and decided to do something about it. He met with the manufacturer and had them change the formulation to provide improved performance. He was successful. These new cells may not be the best at 0.5 amps, but lead the pack at 2.0 amps without heating problems.
Here is another graph of these cells. I am very impressed that Wayne made it a point to come up with a better product and delivered on this.
Dae sent me some Golston cells for testing. These cells performed better than the ones that Chevrofreak sent me, but there is still some inconsistencies. Here is the test results on these cells. The erratic results from the 1.0 amp test was caused by the cell, not the test equipment.
People have been asking about CR2 cells. I don't use them, but happened to come across some Titanium CR2's, thanks to Wayne at AmondoTech. I believe these are rated at 800 mAh.
Here is the data.
You may wonder why I did a second run on the cell that had previously been tested at 0.75 amps. HarryN is developing a CR2 light as are some others. These lights can operate at different levels. It just happens that Harry is thinking of a turbo mode at 700 mA, and after running the test at 0.75 amps, I noticed that the voltage had rebounded back to 2.8 volts. It struck me that it would be interesting to see what happens if you do another run at a lower draw. This means that you can run the light in turbo mode until the batteries die, wait 20 minutes or so, then still have usable light at a lower level. In this case the turbo mode lasted a little over 55 minutes, after which you still had over 96 minutes of run time at 0.10 amps.
My combined graphs are getting cluttered and are difficult to read. I will add future cell results with individual graphs and you can compare the Ah Wh and M values to compare.
Here are some Everlast Go Power cells that VWTim picked up for me to check out. At $0.99 each, they seem to be solid performers.
It seems that Sanyo has some CR123 cells that are being made in China. I have been sent some of these cells for testing and it appears that they do not perform as well as the ones made in Japan.
Here are some graphs to compare...
Sanyo Made in Japan
Sanyo Made in China
Vew sent me some Tenergy CR123 cells to test. Thanks.
I checked them on the ZTS tester and got mixed results. Out of 10 cells, 8 showed 100%, 1 was at 80% and 1 was at 60%. These results are from cells that tested at 100% on the ZTS tester. The cells seemed to perform quite well.
Kevin at BatteryStation sent me a box of his new Made in USA CR123 cells. Not only are then very strong performers, but they are consistent from cell to cell. The cells tested at 2 and 2.5 amps got over 140 F right at the end of the test, but I figure most people will not use a cell down to 1.0 volts in a continuous run.
Here is the graph.
David at the Fenix-Store sent me some of the Panasonic CR123 cells that he sells on his site. These are rated at 1550 mAh which is higher than most other brands of cells. These cells did very well at 0.5 and 1.0 amps, however they started to drop off at 2.0 amps.
Here is the graph.
Cdosrun sent me some Panasonic and Fuji cells from Europe to check out. I have been trying to get this testing done and the data put up here for some time now, and things just have been very busy. Finally, the testing is done and here is the data.
The Panasonic cells had a 2017 date on them and were strong performers. They even performed well at a 2.5 amp draw, but since I only had one cell to test at that rate, I didn't add a graph for it.
Here is the Panasonic 2017 graph.
The Fuji cells had a 2012 date on them. They did well at lower discharge rates, but exceeded the maximum temperature (140 F) during the 2 and 2.5 amp discharges. The discharge curve at 2 amps also has a little dip in it suggesting a little higher internal resistance.
Here is the Fuji 2012 graph.
12/2006 This round of testing is to check out the ability of the CR123 cell to handle a constant 2.5 amp draw. There are several high output lamp assemblies that draw close to that. If you do a run time test on a SureFire M6, the cells will see this load.
LED61 sent me a bunch of cells for this testing. Thanks Alberto. I also added in some other brands to add to the test data.
Four cells of each brand were tested. Each cell was checked on the ZTS tester and found to be at 100%. You will notice that the initial voltage is close to the same for each cell. In multi cell lights, we have advocated using a load test to match the cells to avoid cell mismatch that can cause problems.
Keep in mind that none of the brands recommend a constant current draw this high. Some are OK with a heavy pulse load, but none of them are rated for a constant heavy current draw.
There is some lag in my CBA temperature probe, so I usually set it at 120 F. This test required raising that to 140 F, and even then some of the cells terminated on high temperature. All of the cells got hot during the test. This current draw is pushing the limits of the CR123 cells. Any weakness of the cell is exaggerated at this high current draw.
Keep in mind that the testing is done on a single cell that is open to the air. Inside a flashlight with other cells, things are expected to get hotter than what I am seeing. None of the shrink wrap distorted during these tests, but that has been reported by others who have done extended runs with these lights.
I was thinking that the best cells for this high current rate would be those that were consistent from cell to cell. The voltage retention under load is also important since many of these high current draw lights are direct drive. Higher voltage means a brighter light.
I will add graphs as the data gets sorted out. The list of cells, so far, includes Titanium, BatteryStation, Sanyo (made in Japan), Panasonic (made in USA), SureFire, Energizer, Duracell Procell, and Duracell Ultra.
I will start by just showing the results for each of the 4 cells of each brand. I will save any conclusions for later.
The Titanium CR123 cells have had some problems. There was a bad batch that was supposed to have been removed from the market, however, I keep hearing of people ending up with cells that won't pass a ZTS test at 100%. I ordered 12 cells and they all checked out OK on the ZTS tester. Here is the test results at 2.5 amps.
I must add that the battery manufacturer of the Titanium cells does not recommend using their cells at this high a constant current draw. I believe they also caution against using their cells in higher than 3 cell lights.
Here is the results from the Sanyo CR123 (Made in Japan) cells. We have found that the Sanyo cells made in China seem to have around 10 - 15% less capacity than those made in Japan, but at this high rate, I wont speculate a guess as to how well the made in China cells will do. I don't have any of the Sanyo cells from China, so I can not do a direct comparison. We will just have to speculate...
If anyone has 4 Sanyo CR123 cells they would like to send me, I would be happy to include them in this test. PM me for shipping information.
Cell 1 terminated early due to high temperature. All four cells hit over 140 F, but cell 1 hit it a few seconds before it hit the low voltage cut off.
Sanyo also does not recommend using their cells at this high a constant current draw.
BatteryStation has been a long time supporter of CPF, and many use their cells. Kevin has worked with the manufacturer to give us good performance and still offers a discount price for the members of CPF. Kevin has gone the extra step of individually testing each cell with the ZTS tester in an effort to add another layer of quality to the cells he sells.
I asked Kevin about testing the BatteryStation cells at 2.5 amps. He does not recommend his BatteryStation cells in applications that draw 2.5 amps continuously. As a matter of fact, Kevin provides a box of 12 SureFire cells free with every SureFire M6 that he sells. He stated that if you are going to continuously use a light that draws that high a current, you should use the batteries recommended by the manufacturer of the light, and let them worry about any liability issues.
Kevin also mentioned that BatteryStation cells are continuing to change. His next batch of cells have all stainless steel construction and, I believe, a new PTC. These are safety related items and will probably not impact performance in any way. Kevin went on to inform me that in the rare event of a "venting with flame" incident, a stainless steel can will not ignite where the aluminum possibly could get hot enough to ignite.
I have also heard a rumor that BatteryStation cells may no longer be made in China in the future... perhaps they may even be manufactured in the US.
Here are the test results of the BatteryStation cells at 2.5 amps. Note that cells 2, 3, and 4 terminated early due to the temperature exceeding 140 F.
SureFire recommends using their batteries in their lights. I guess this means that the SureFire batteries are manufactured in a way that evens out the tail end of the discharge curve. Many people have questioned SureFire about running the M6 for a constant 19 minutes, and have been repeatedly told that it is OK to do that. Here is the SureFire CR123 data.
Here is the data from some Panasonic CR123 cells that were made in the USA. These were individually packed and it looks like I got two separate batches.
Here is the data from the Energizer cells. I don't know what happened to cell 3, but it seemed to behave differently.
There has been some discussion that Duracell Pro Cell and Ultra CR123 cells are the same. Here is how they perform under this 2.5 amp load.
First the Pro Cell test data.
Now the Ultra cell test data.
From this limited test data, I can see why SureFire used the Duracell Ultra cells when they developed the M6. These seem to be the most consistent from cell to cell.
Bill Waites wondered if a different batch of SureFire cells might behave differently under these high loads. The cells I tested had a 2013 date on them and he had some that had a 2016 date on them. He sent me 4 to test. Thanks Bill.
It appears that these are pretty close, but 2 of them got hotter than the other two.
Here is the data.
CPF memeber Markcm sells CR123 cells from his web site at e-lectronics.net. All 4 of these cells terminated early due to temperatures exceeding 140 F. In spite of that, they seem to be strong performers.
The new BatteryStation cells did very good during the normal testing, so I thought I would give them a try at 2.5 amps.
While they were consistent from cell to cell, they got hot. 3 of the 4 cells shown exceeded 140 F at the end of the test. I ran another batch of 4 cells, and all 4 exceeded 140 F. I ran a third batch of 4 cells and 2 of them exceeded 140 F.
Performance is good, but if you use these in a SureFire M6, run the light continuously, and run the light past where it just starts to dim down, you can expect to have to deal with hot cells.
Here is the data.
Tom
Here is another series of tests, this time looking at Lithium CR123 primary cells. These are not rechargeable.
I picked a variety of batteries. My list is far from exhaustive, however I think this is a good representation. If anyone has a brand that I have missed and wants to donate them to the cause, get in touch with me. I'll test them and post the results.
Battery Capacities:
I am not sure at what load Lithium battery capacities are rated at. I know that many of our lights draw 1 to 2 amps, so I decided to test at those rates. Energizer rates their 123 cells at 1.5 Ah for reference.
Graph Nomenclature:
Ah = Amp Hours
Wh = Watt Hours
M = Minutes
The battery line up:
Duracell Ultra
Energizer
Sanyo
SureFire
Streamlight
BatteryStation
12/07 BatteryStation now Made in USA
Maxell Gold
GI
RayOVac
Titanium
Marathon
Golston
4/22/05 New Titanium Cells
8/6/05 New batch of Golston Cells
6/08 Panasonic 1550 mAh Made in USA
3/09 Panasonic 2017 from Europe
3/09 Fuji 2012 from Europe
A big thanks to JohnN and Dano for providing additional batteries for me to test - Thanks.
Another big thanks to Wayne at AmondoTech for providing additional batteries for me to include in the testing - Thanks.
Another big thanks to Chevrofreak for providing additional batteries for me to include in the testing - Thanks.
Another big thanks to Dae for providing some additional Golston cells for testing - Thanks.
Thanks to VWTim for picking up some Everlast Go Power cells for testing.
Thanks to Cdosrun for sending the Panasonic and Fuji cells from Europe.
The graphs:
Edit: 0.5 Amp Rate
123 at 1.0 Amp Rate
123 at 2.0 Amp Rate
Test conditions:
All tests were conducted at room temperature of about 68 degrees Fahrenheit utilizing a West Mountain Radio CBA.
All batteries are fresh stock.
Test Notes:
The tests at the 1.0 Amp Rate revealed a moderate battery temperature increase. The batteries ended up in the 85-88 degree F. range. The battery temperatures shot up during the 2.0 Amp Rate testing. I have my CBA set to terminate the test when the battery temperature exceeds 115 degrees F. The SureFire battery test was terminated early because the cell temperature exceeded 115 degrees. I watched the cell temperature continue to rise, after the test had been terminated, until it leveled out at 122 degrees. The SureFire cells were the only ones that exceeded 115 degrees, but all of the others were very close.
Conclusions:
These tests revealed some differences at higher current draws, but at lower levels, the differences seem minimal.
The Energizer cells were at the bottom of the pack. These were fresh cells and I am not sure what is going on with them. I would normally do additional tests on them, but I need to find a more reasonable source for them than the local store.
The eye opener for me was the temperature increase of the batteries when testing at 2 amps. I would venture an opinion that if a light draws 2 amps or more, thermal management is going to be difficult during long runs. The lamps and LED's are producing heat, and at these rates we have the batteries producing heat as well. Lithium cells have a thermal shut down protection system, and this may shed some light on why sudden shutdown occurs with some lights.
4/22/05 Wayne at AmondoTech was disappointed in the performance of his Titanium 123 cells and decided to do something about it. He met with the manufacturer and had them change the formulation to provide improved performance. He was successful. These new cells may not be the best at 0.5 amps, but lead the pack at 2.0 amps without heating problems.
Here is another graph of these cells. I am very impressed that Wayne made it a point to come up with a better product and delivered on this.
Dae sent me some Golston cells for testing. These cells performed better than the ones that Chevrofreak sent me, but there is still some inconsistencies. Here is the test results on these cells. The erratic results from the 1.0 amp test was caused by the cell, not the test equipment.
People have been asking about CR2 cells. I don't use them, but happened to come across some Titanium CR2's, thanks to Wayne at AmondoTech. I believe these are rated at 800 mAh.
Here is the data.
You may wonder why I did a second run on the cell that had previously been tested at 0.75 amps. HarryN is developing a CR2 light as are some others. These lights can operate at different levels. It just happens that Harry is thinking of a turbo mode at 700 mA, and after running the test at 0.75 amps, I noticed that the voltage had rebounded back to 2.8 volts. It struck me that it would be interesting to see what happens if you do another run at a lower draw. This means that you can run the light in turbo mode until the batteries die, wait 20 minutes or so, then still have usable light at a lower level. In this case the turbo mode lasted a little over 55 minutes, after which you still had over 96 minutes of run time at 0.10 amps.
My combined graphs are getting cluttered and are difficult to read. I will add future cell results with individual graphs and you can compare the Ah Wh and M values to compare.
Here are some Everlast Go Power cells that VWTim picked up for me to check out. At $0.99 each, they seem to be solid performers.
It seems that Sanyo has some CR123 cells that are being made in China. I have been sent some of these cells for testing and it appears that they do not perform as well as the ones made in Japan.
Here are some graphs to compare...
Sanyo Made in Japan
Sanyo Made in China
Vew sent me some Tenergy CR123 cells to test. Thanks.
I checked them on the ZTS tester and got mixed results. Out of 10 cells, 8 showed 100%, 1 was at 80% and 1 was at 60%. These results are from cells that tested at 100% on the ZTS tester. The cells seemed to perform quite well.
Kevin at BatteryStation sent me a box of his new Made in USA CR123 cells. Not only are then very strong performers, but they are consistent from cell to cell. The cells tested at 2 and 2.5 amps got over 140 F right at the end of the test, but I figure most people will not use a cell down to 1.0 volts in a continuous run.
Here is the graph.
David at the Fenix-Store sent me some of the Panasonic CR123 cells that he sells on his site. These are rated at 1550 mAh which is higher than most other brands of cells. These cells did very well at 0.5 and 1.0 amps, however they started to drop off at 2.0 amps.
Here is the graph.
Cdosrun sent me some Panasonic and Fuji cells from Europe to check out. I have been trying to get this testing done and the data put up here for some time now, and things just have been very busy. Finally, the testing is done and here is the data.
The Panasonic cells had a 2017 date on them and were strong performers. They even performed well at a 2.5 amp draw, but since I only had one cell to test at that rate, I didn't add a graph for it.
Here is the Panasonic 2017 graph.
The Fuji cells had a 2012 date on them. They did well at lower discharge rates, but exceeded the maximum temperature (140 F) during the 2 and 2.5 amp discharges. The discharge curve at 2 amps also has a little dip in it suggesting a little higher internal resistance.
Here is the Fuji 2012 graph.
12/2006 This round of testing is to check out the ability of the CR123 cell to handle a constant 2.5 amp draw. There are several high output lamp assemblies that draw close to that. If you do a run time test on a SureFire M6, the cells will see this load.
LED61 sent me a bunch of cells for this testing. Thanks Alberto. I also added in some other brands to add to the test data.
Four cells of each brand were tested. Each cell was checked on the ZTS tester and found to be at 100%. You will notice that the initial voltage is close to the same for each cell. In multi cell lights, we have advocated using a load test to match the cells to avoid cell mismatch that can cause problems.
Keep in mind that none of the brands recommend a constant current draw this high. Some are OK with a heavy pulse load, but none of them are rated for a constant heavy current draw.
There is some lag in my CBA temperature probe, so I usually set it at 120 F. This test required raising that to 140 F, and even then some of the cells terminated on high temperature. All of the cells got hot during the test. This current draw is pushing the limits of the CR123 cells. Any weakness of the cell is exaggerated at this high current draw.
Keep in mind that the testing is done on a single cell that is open to the air. Inside a flashlight with other cells, things are expected to get hotter than what I am seeing. None of the shrink wrap distorted during these tests, but that has been reported by others who have done extended runs with these lights.
I was thinking that the best cells for this high current rate would be those that were consistent from cell to cell. The voltage retention under load is also important since many of these high current draw lights are direct drive. Higher voltage means a brighter light.
I will add graphs as the data gets sorted out. The list of cells, so far, includes Titanium, BatteryStation, Sanyo (made in Japan), Panasonic (made in USA), SureFire, Energizer, Duracell Procell, and Duracell Ultra.
I will start by just showing the results for each of the 4 cells of each brand. I will save any conclusions for later.
The Titanium CR123 cells have had some problems. There was a bad batch that was supposed to have been removed from the market, however, I keep hearing of people ending up with cells that won't pass a ZTS test at 100%. I ordered 12 cells and they all checked out OK on the ZTS tester. Here is the test results at 2.5 amps.
I must add that the battery manufacturer of the Titanium cells does not recommend using their cells at this high a constant current draw. I believe they also caution against using their cells in higher than 3 cell lights.
Here is the results from the Sanyo CR123 (Made in Japan) cells. We have found that the Sanyo cells made in China seem to have around 10 - 15% less capacity than those made in Japan, but at this high rate, I wont speculate a guess as to how well the made in China cells will do. I don't have any of the Sanyo cells from China, so I can not do a direct comparison. We will just have to speculate...
If anyone has 4 Sanyo CR123 cells they would like to send me, I would be happy to include them in this test. PM me for shipping information.
Cell 1 terminated early due to high temperature. All four cells hit over 140 F, but cell 1 hit it a few seconds before it hit the low voltage cut off.
Sanyo also does not recommend using their cells at this high a constant current draw.
BatteryStation has been a long time supporter of CPF, and many use their cells. Kevin has worked with the manufacturer to give us good performance and still offers a discount price for the members of CPF. Kevin has gone the extra step of individually testing each cell with the ZTS tester in an effort to add another layer of quality to the cells he sells.
I asked Kevin about testing the BatteryStation cells at 2.5 amps. He does not recommend his BatteryStation cells in applications that draw 2.5 amps continuously. As a matter of fact, Kevin provides a box of 12 SureFire cells free with every SureFire M6 that he sells. He stated that if you are going to continuously use a light that draws that high a current, you should use the batteries recommended by the manufacturer of the light, and let them worry about any liability issues.
Kevin also mentioned that BatteryStation cells are continuing to change. His next batch of cells have all stainless steel construction and, I believe, a new PTC. These are safety related items and will probably not impact performance in any way. Kevin went on to inform me that in the rare event of a "venting with flame" incident, a stainless steel can will not ignite where the aluminum possibly could get hot enough to ignite.
I have also heard a rumor that BatteryStation cells may no longer be made in China in the future... perhaps they may even be manufactured in the US.
Here are the test results of the BatteryStation cells at 2.5 amps. Note that cells 2, 3, and 4 terminated early due to the temperature exceeding 140 F.
SureFire recommends using their batteries in their lights. I guess this means that the SureFire batteries are manufactured in a way that evens out the tail end of the discharge curve. Many people have questioned SureFire about running the M6 for a constant 19 minutes, and have been repeatedly told that it is OK to do that. Here is the SureFire CR123 data.
Here is the data from some Panasonic CR123 cells that were made in the USA. These were individually packed and it looks like I got two separate batches.
Here is the data from the Energizer cells. I don't know what happened to cell 3, but it seemed to behave differently.
There has been some discussion that Duracell Pro Cell and Ultra CR123 cells are the same. Here is how they perform under this 2.5 amp load.
First the Pro Cell test data.
Now the Ultra cell test data.
From this limited test data, I can see why SureFire used the Duracell Ultra cells when they developed the M6. These seem to be the most consistent from cell to cell.
Bill Waites wondered if a different batch of SureFire cells might behave differently under these high loads. The cells I tested had a 2013 date on them and he had some that had a 2016 date on them. He sent me 4 to test. Thanks Bill.
It appears that these are pretty close, but 2 of them got hotter than the other two.
Here is the data.
CPF memeber Markcm sells CR123 cells from his web site at e-lectronics.net. All 4 of these cells terminated early due to temperatures exceeding 140 F. In spite of that, they seem to be strong performers.
The new BatteryStation cells did very good during the normal testing, so I thought I would give them a try at 2.5 amps.
While they were consistent from cell to cell, they got hot. 3 of the 4 cells shown exceeded 140 F at the end of the test. I ran another batch of 4 cells, and all 4 exceeded 140 F. I ran a third batch of 4 cells and 2 of them exceeded 140 F.
Performance is good, but if you use these in a SureFire M6, run the light continuously, and run the light past where it just starts to dim down, you can expect to have to deal with hot cells.
Here is the data.
Tom
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