Technical report, specification is met.

Relevant excerpts from the 2009 specifications of Samsung (Google search: filetype: pdf ICR18659-26F):
- The cells do not have a protection circuit (PCM).
- The minimum capacity is 2550 mAh (CC: 520 mA, 2.75 V cut-off).
- The applied charging method is constant current / constant voltage (CC / CV).
- The maximum charge voltage is 4.2 ± 0.05 V.
- Cells should not be discharged below 2.5 V, the benchmark for optimum cycle stability is 2.75 V.
- The maximum charging current of 2600 mA (1C).
- The maximum discharge current is 5200 mA (2C).
- The standard charging time is 3 hours, CC = 1300 mA (> 95% rel capacity corr 2400 mAh..).
- The Quick-charging time is 2.5h, CC = 2600 mA (90% rel capacity corr 2300 mAh..).
- The capacity to 299 cycles is 1785mAh (with standard charge / discharge cycles).

It can be assumed that with a fast charging, as those in the Amazon product description (1.2H), only a relative. Can be achieved capacity of <80% (acc. <2040 mAh).

Own measurements to verify the specifications:
- Shop: CC / CV: 1300 mA / 4.2 V (3h or 1 / 20C).
- Unloading: CC: 1000 mA (3V cut-off).
-> Capacity of 2410 mAh (corresponding to approximately 95% relative capacity.).

- Shop: CC / CV: 1300 mA / 4.2 V (3h or 1 / 20C).
- Unloading: CC: 500 mA (3V cut-off).
-> Capacity of 2500 mAh (corresponding to approximately 98% relative capacity.).

- Shop: CC / CV: 2600 mA / 4.2 V (1.8h or 1 / 20C)
- Unloading: CC: 1000 mA (3V cut-off).
-> Capacity of 2115 mAh (corresponding to approximately 83% relative capacity.).

It should be noted that the values ​​determined by my values ​​are only samples. However, the values ​​correspond to the specifications in terms of the achievable capacity at the charge / discharge cycles applied. To cycle stability, I can not say anything.

Conclusion:
The nominal capacity should not pay too much attention generally. Who will discharge its cells with currents> 520 mA (0.2C) can not get the maximum capacity. For example, the max. Discharge current of 5200 mA (2C) as specified by only 80% of the relative capacity available (corresponding to 2040 mAh.). Who his cells also do not want to invite for 7 hours at 520 mA is obtained never 100% of relative capacity. Also, do not neglect the temperature dependence, in a wintry use eg falls, the relative discharge capacity of 80% at 0 ° C to 50% at -10 ° C from. (CC: 520mA, 2.75V cut-off). In this respect, most of these external conditions will play a crucial role in the performance of Li-Ion cells in practice anyway.

To get even 70% of relative capacity to 299 cycles (corr. 1785 mAh), as specified by CC / CV chargers are recommended with a charging current up to 1300 mA, whereby the discharge current in the application should not exceed 1500 mA.