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, LG, Panasonic, 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 protected battery pack. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition.
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 cell performs identically to the incredible Samsung 30T, including temperature, but is in a different steel can. I was told it is a Samsung 30T by Ampking but I am unable to explain the use of a different can.
The Samsung 30T and its rewraps, like this Ampking, are the highest performing and hardest hitting cells available to us as of May, 2018.
This Ampking’s “40A-50A” current rating is exaggerated and undefined but the 3000mAh capacity rating is accurate.
I am estimating this Ampking’s ratings at 35A and 3000mAh, same as the Samsung 30T.
Two cells were donated for the purposes of testing by Ampking (www.ampking.com). Thank you!
Continuous Current Discharge Graphs
Ratings Graphic
Performance Specs
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 protected battery pack. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition.
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 cell performs identically to the incredible Samsung 30T, including temperature, but is in a different steel can. I was told it is a Samsung 30T by Ampking but I am unable to explain the use of a different can.
The Samsung 30T and its rewraps, like this Ampking, are the highest performing and hardest hitting cells available to us as of May, 2018.
This Ampking’s “40A-50A” current rating is exaggerated and undefined but the 3000mAh capacity rating is accurate.
I am estimating this Ampking’s ratings at 35A and 3000mAh, same as the Samsung 30T.
Two cells were donated for the purposes of testing by Ampking (www.ampking.com). Thank you!
Continuous Current Discharge Graphs
Ratings Graphic
Performance Specs
- DC Internal Resistance = 11.5mOhms (milliohms) average for the two cells.
- Total energy delivered down to 3.2V at 10A continuous = 9.8Wh (Watt-hours) average
- Total energy delivered down to 3.2V at 20A continuous = 8.7Wh (Watt-hours) average
- Total energy delivered down to 3.2V at 30A continuous = 7.1Wh (Watt-hours) average
