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Samsung has released a new version of the 25r. These will have green wraps like the Sony bats.
What is the difference between the blue and green Samsung 25R 18650?
They sent a scanned letter-of-guarantee for the new Samsung 25R5. Here are the pertinent parts transcribed:
Samsung SDI guarantees that the performance of the 25R2 with blue PVC and 25R5 with green PVC are totally same.
The percentage of Electrolyte is change than 25R5
The life cycle would be better than 25R5
Bottom-line: The green 25R5 has a better cycle life.
A cycle is one full charge and discharge of the battery. If someone asked you how old a battery is, you should answer by telling its cycle count. So what is the cycle life the 25R? A quick check of the spec sheet yields the answer:
The 25R2's life is: 250 cycles. This is tested at 20A, the cell's max. continuous discharge rating.
After 250 cycles the maximum capacity the 25R2 can hold dips to 1500mAh or lower (this is at 60% of its starting capacity, at 25℃).
So we can say that the 25R5 has a cycle life greater than 250 under these same conditions.
Info courtesy of Battery Bro http://batterybro.com/blogs/18650-w...5187011-green-samsung-18650-25r5-vs-blue-25r2
What is the difference between the blue and green Samsung 25R 18650?
They sent a scanned letter-of-guarantee for the new Samsung 25R5. Here are the pertinent parts transcribed:
Samsung SDI guarantees that the performance of the 25R2 with blue PVC and 25R5 with green PVC are totally same.
The percentage of Electrolyte is change than 25R5
- FEC: 3 -> 5%
- SN: 1.5 -> 1%
- PA77: 1-> 1.5%
The life cycle would be better than 25R5
Bottom-line: The green 25R5 has a better cycle life.
A cycle is one full charge and discharge of the battery. If someone asked you how old a battery is, you should answer by telling its cycle count. So what is the cycle life the 25R? A quick check of the spec sheet yields the answer:
The 25R2's life is: 250 cycles. This is tested at 20A, the cell's max. continuous discharge rating.
After 250 cycles the maximum capacity the 25R2 can hold dips to 1500mAh or lower (this is at 60% of its starting capacity, at 25℃).
So we can say that the 25R5 has a cycle life greater than 250 under these same conditions.
Info courtesy of Battery Bro http://batterybro.com/blogs/18650-w...5187011-green-samsung-18650-25r5-vs-blue-25r2
