Gransee
Flashlight Enthusiast
We finally received our shipment of Yuntong brand 123 cells in yesterday. They can now be ordered at the bottom of this page. We still have a few packs of DPs left so let us know which cell you want.
The Yuntongs cost a little more than the DPs but we are still just charging $1 per cell.
I have been testing these cells for over a month with good results. These tests show that the Yuntong brand performs better than the DP brand. Earlier tests showed the DP brand to be better than the Lisun or Tekcell brand. As a result, I believe these Yuntong cells to have a good bang for the buck.
Here's an Excel graph of some of the run tests:
123 battery test (".xls" document - 94kb)
A note about the graphs (someone is going to ask): Your results are going to vary because of factors such as temperature, vf of the LED in your LS, battery variance, etc. For these tests, I picked a LSH-P (#1947) that tested average in power consumption out of 7 units. This graphs aims to represents an average result. The brightness of each test is relative, not absolute. So if one unit has a higher graph, it does not mean it was brighter. Assume that all tests are pretty much the same brightness because the LS used was the same and the temperature was about the same as well. Variations in light input were a result of varied distance to the light sensor. The pertinent data here is the length of time that each cell delivered and how it dropped off, etc.
All cells were recently purchased new. All cells except for the Duracells were purchased directly from the manufacturer.
As always, I really like to hear what your experience is with the cells we sell. Thanks!
Peter
The Yuntongs cost a little more than the DPs but we are still just charging $1 per cell.
I have been testing these cells for over a month with good results. These tests show that the Yuntong brand performs better than the DP brand. Earlier tests showed the DP brand to be better than the Lisun or Tekcell brand. As a result, I believe these Yuntong cells to have a good bang for the buck.
Here's an Excel graph of some of the run tests:
123 battery test (".xls" document - 94kb)
A note about the graphs (someone is going to ask): Your results are going to vary because of factors such as temperature, vf of the LED in your LS, battery variance, etc. For these tests, I picked a LSH-P (#1947) that tested average in power consumption out of 7 units. This graphs aims to represents an average result. The brightness of each test is relative, not absolute. So if one unit has a higher graph, it does not mean it was brighter. Assume that all tests are pretty much the same brightness because the LS used was the same and the temperature was about the same as well. Variations in light input were a result of varied distance to the light sensor. The pertinent data here is the length of time that each cell delivered and how it dropped off, etc.
All cells were recently purchased new. All cells except for the Duracells were purchased directly from the manufacturer.
As always, I really like to hear what your experience is with the cells we sell. Thanks!
Peter