All the talk of battery safety lately got me back into the habit of metering my batts as they came off the charger. I noticed that my old trusty Trustfire TR-001 is charging my batts up to 4.25V. Now unless I am mistaken that is too high. I decided that it was time for an upgrade, so I did a little research and settled on the xtar MP6 II. For the price, the features seemed unbeatable.
I got it today and put in one of my AW IMR 18650 2000mAh that I had purchased recently from SuperT. Just to check, the starting voltage on the cell was 3.7V. I know it didn't really need to be charged yet, but it wont hurt to charge it early and it was my only cell that needed charging. As soon as it went green, I pulled out the cell to check end voltage and it is reading 4.28V! WTF!?! I checked it again 20 min later and it was still reading 4.28V.
What is the max safe voltage that a cell should be charged to keeping cell longevity in mind? I thought it should be closer to 4.2v.
Is 4.28V standard for the xtar? Am I just being too picky?
The way I understand it is that 4.3v and above is dangerous where above 4.2V and below 4.3V reduced the life span of the cell. Please let me know if I am wrong here.
I got it today and put in one of my AW IMR 18650 2000mAh that I had purchased recently from SuperT. Just to check, the starting voltage on the cell was 3.7V. I know it didn't really need to be charged yet, but it wont hurt to charge it early and it was my only cell that needed charging. As soon as it went green, I pulled out the cell to check end voltage and it is reading 4.28V! WTF!?! I checked it again 20 min later and it was still reading 4.28V.
What is the max safe voltage that a cell should be charged to keeping cell longevity in mind? I thought it should be closer to 4.2v.
Is 4.28V standard for the xtar? Am I just being too picky?
The way I understand it is that 4.3v and above is dangerous where above 4.2V and below 4.3V reduced the life span of the cell. Please let me know if I am wrong here.