I screwed up.
The last time I tested the Energy Vap "35A 3000mAh" batteries I gave them a 20A 2700mAh rating, saying they appeared to be just low grade Samsung 30Q's
I was wrong. I have retested them and they are only 2500mAh Samsung 25R's rewraps.
While the appearance of the Energy Vap battery was essentially identical to Samsung 30Q's that was also true with 25R's. Many LG's and Samsung's are almost identical unless examined with a loupe. The tiny tooling mark differences I saw compared to a 25R5 were greater than the ones I saw when compared to a 30Q. There are differences over time and from one manufacturing location to another for the same model battery, which makes definitive conclusions a bit more difficult sometimes.
After my last tests of the Energy Vap battery I was able to examine a Samsung 25R6M, the latest 25R made in Malaysia. The Energy Vap is a better match to this battery than the 30Q when examined with a loupe.
Why was my capacity rating for the Energy Vap set to 2700mAh though if this is really a 2500mAh battery?
Very few companies exaggerate the capacity rating they give the batteries they sell. This has allowed me to skip the 4-6 hour 0.5A capacity discharge test that might be done. The performance of the batteries at my 5A or 10A starting discharge current level usually gives me a good idea whether they're exaggerating their ratings or not. The testing I do now already takes two days for each model battery so normally being able to skip the long 0.5A capacity test means a lot.
When I saw the roughly 2400mAh capacity at 10A delivered by the Energy Vap during my last test I thought that was just a very poor performing Samsung 30Q that would deliver about 2700mAh at 0.5A.
I was wrong and if I had done a 0.5A test I would have seen that.
I was so focused on the ridiculous 35A rating that Energy Vap gave the battery that I didn't give enough thought to what other batteries they might be rewrapping that would better fit the discharge results I was seeing. I also had not yet seen the Samsung 25R6M that was a closer match to the Energy Vap battery than the 30Q.
I will not make that mistake again. If I see a battery that obviously doesn't have the capacity the company claims I will do the 0.5A discharge test to help me narrow down what they might actually be rewrapping.
The retest results for the Energy Vap battery will be posted in a few hours. I apologize for any confusion this has caused and will always keep looking for ways to refine my testing to keep my ratings tables an accurate source of battery information for the vaping community.
The last time I tested the Energy Vap "35A 3000mAh" batteries I gave them a 20A 2700mAh rating, saying they appeared to be just low grade Samsung 30Q's
I was wrong. I have retested them and they are only 2500mAh Samsung 25R's rewraps.
While the appearance of the Energy Vap battery was essentially identical to Samsung 30Q's that was also true with 25R's. Many LG's and Samsung's are almost identical unless examined with a loupe. The tiny tooling mark differences I saw compared to a 25R5 were greater than the ones I saw when compared to a 30Q. There are differences over time and from one manufacturing location to another for the same model battery, which makes definitive conclusions a bit more difficult sometimes.
After my last tests of the Energy Vap battery I was able to examine a Samsung 25R6M, the latest 25R made in Malaysia. The Energy Vap is a better match to this battery than the 30Q when examined with a loupe.
Why was my capacity rating for the Energy Vap set to 2700mAh though if this is really a 2500mAh battery?
Very few companies exaggerate the capacity rating they give the batteries they sell. This has allowed me to skip the 4-6 hour 0.5A capacity discharge test that might be done. The performance of the batteries at my 5A or 10A starting discharge current level usually gives me a good idea whether they're exaggerating their ratings or not. The testing I do now already takes two days for each model battery so normally being able to skip the long 0.5A capacity test means a lot.
When I saw the roughly 2400mAh capacity at 10A delivered by the Energy Vap during my last test I thought that was just a very poor performing Samsung 30Q that would deliver about 2700mAh at 0.5A.
I was wrong and if I had done a 0.5A test I would have seen that.
I was so focused on the ridiculous 35A rating that Energy Vap gave the battery that I didn't give enough thought to what other batteries they might be rewrapping that would better fit the discharge results I was seeing. I also had not yet seen the Samsung 25R6M that was a closer match to the Energy Vap battery than the 30Q.
I will not make that mistake again. If I see a battery that obviously doesn't have the capacity the company claims I will do the 0.5A discharge test to help me narrow down what they might actually be rewrapping.
The retest results for the Energy Vap battery will be posted in a few hours. I apologize for any confusion this has caused and will always keep looking for ways to refine my testing to keep my ratings tables an accurate source of battery information for the vaping community.
