Test Report Summary: Lishen is one of the large, established cell manufacturers in China (http://www.lishen.com.cn). This cell is a decent performer, about the same as the Samsung 50E but not quite as good as the Molicel M50A and Samsung 50E3. Its 12A rating seems reasonable but must be reduced to 6A if the cells get above 45°C, what many would call “warm”, up to a max of 60°C. This type of derating should be done for any cell in my opinion but Lishen actually specifies the derating in the datasheet, which is great to see.
Note that this cell has a low voltage cutoff of 2.75V versus the more common 2.50V cutoff used by most other cells.
This is a larger cell, the datasheet lists the dimensions as 21.7mm±0.2mm diameter by 70.9mm±0.2mm long.
The two cells I tested delivered 4022mAh and 4048mAh. This is decent consistency and is typical for cells from one of the larger China cell manufacturers.
This cell has a high cycle life rating “1000th cycle ≥80% of 1st Capacity (25℃±2℃，4.2V-3.0V). If discharged at high rate or high temperature frequently, cell cycle life will be shorten.” But note that the cells were discharged down to 3.0V. Most cycle life ratings are based on cycling the cell down to its low voltage cutoff point, 2.75V in this case. I do not know how much only going down to 3.0V extends cell life but we cannot directly compare this cell’s cycle life spec to a cell that was discharged all the way down each cycle.
Two cells were purchased for testing by me.
Ratings graphic: https://imgur.com/a/tET1mUs
Full Test report: Bench Test Results: Lishen LR2170SA - 12A 4000mAh 21700…decent performer, high cycle life rating | E-Cigarette Forum
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To see how other cells have tested check out this link: List of Battery Tests | E-Cigarette Forum
