These tests below only note the ESTIMATED ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, Murata, LG, Panasonic, Molicel, or Sanyo can change at any time! This is one of the hazards of using “rewrapped” or batteries from other manufacturers so carefully research any battery you are considering using before purchasing.
Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of personal injury or property damage. They are not meant to be used outside of a physically and electrically protected battery pack. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition. Use of any of these batteries is AT YOUR OWN RISK.
Testing batteries at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.
If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.
Bottom Line
This is an average performing 18500 cell that appears to have a 3.8A rating. The continuous current rating is not specified but the highest discharge level shown in the graph in a datasheet is 3.8A.
The capacity for the two NCR18500A’s I tested was 2060mAh and 2066mAh at 380mA (0.2C) down to 2.5V. This is fantastic consistency and is typical of cells from the major manufacturers. Panasonic rates them at 1900mAh at 20°C and 1940mAh minimum/2040mAh typical at 25°C. I am rating these cells at at 1940mAh.
The plastic wrap on this cell stops before reaching the bottom of the cell. The is no wrap anywhere on the bottom. I do not know if this could be a safety issue for any device. Do not use this battery unless you are sure it is not a problem.
Two cells were purchased for the purposes of testing by me.
Continuous Current Discharge Graphs
Ratings Graphic
Performance Specs
To see how other cells have tested check out this link: List of Battery Tests | E-Cigarette Forum
***I have switched test jigs, resulting in slightly lower IR readings versus my previous setup. Add 1.6mOhms to this IR value in order to compare these cells to others tested previously.
Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of personal injury or property damage. They are not meant to be used outside of a physically and electrically protected battery pack. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition. Use of any of these batteries is AT YOUR OWN RISK.
Testing batteries at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.
If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.
Bottom Line
This is an average performing 18500 cell that appears to have a 3.8A rating. The continuous current rating is not specified but the highest discharge level shown in the graph in a datasheet is 3.8A.
The capacity for the two NCR18500A’s I tested was 2060mAh and 2066mAh at 380mA (0.2C) down to 2.5V. This is fantastic consistency and is typical of cells from the major manufacturers. Panasonic rates them at 1900mAh at 20°C and 1940mAh minimum/2040mAh typical at 25°C. I am rating these cells at at 1940mAh.
The plastic wrap on this cell stops before reaching the bottom of the cell. The is no wrap anywhere on the bottom. I do not know if this could be a safety issue for any device. Do not use this battery unless you are sure it is not a problem.
Two cells were purchased for the purposes of testing by me.
Continuous Current Discharge Graphs
Ratings Graphic
Performance Specs
- DC Internal Resistance = 63.5mOhms*** (milliohms) average for the two cells.
- Watt-hours (energy) delivered at 2.5A down to 3.2V = 5.3Wh
- 2-sec puff count at 7.25W = 1316
To see how other cells have tested check out this link: List of Battery Tests | E-Cigarette Forum
***I have switched test jigs, resulting in slightly lower IR readings versus my previous setup. Add 1.6mOhms to this IR value in order to compare these cells to others tested previously.
