Though it is possible to charge an eneloop battery in a
"Quick Charger", it is not recommended. We recommend
charging eneloop batteries in a NiMh charger that is [sic]
2 hours or more. Charging eneloop batteries in a "Quick
Charger" can reduce the overall life of the battery.

A two-hour charge is, by any reasonable standard, a "quick charge". It would
be at least 0.5C -- hardly a slow charge.