A good amount of professional Eneloop info is listed on cpf.
slow is healthy. it is very instructional to compare the current Eneloop charger (www.eneloop.info) models. Charging speeds are given in the PDF/PDFs:
---------------------------------------------------------------
see pic below, the old charger MDR02 suggests
AA: 550mA/cell => 230min.
AAA: 380mA/cell => 135min.
---------------------------------------------------------------
See pic below, the USB charger NC-MDU01 what a f***ing name ha suggests:
AA: 850mA/cell => 140min.
AA: 450mA/cell => 280min.
AAA: 850mA/cell => 60min.
AAA: 450mA/cell => 120min.
---------------------------------------------------------------
see pic below, the charger MQN04 nice name suggests:
AA: 250mA/cell => 10h.
AAA: 120mA/cell => 8h.
---------------------------------------------------------------
see pic below, the charger NC-MQN09W suggests:
AA: 300mA/cell => 7.5h.
AAA: 150mA/cell => 6h.
---------------------------------------------------------------
and finally, see pic below, the charger NC-MQR06W suggests:
AA: 1680mA/cell => 75mins.
AA: 1120mA/cell => 110mins.
AA: 560mA/cell => 220mins.
AAA: 840mA/cell => 65mins.
AAA: 560mA/cell => 100mins.
AAA: 280mA/cell => 200mins.
---------------------------------------------------------------
see pic below, the official specs for Eneloop AA suggest:
AA: 1C == 2000mA/cell => 1.1h.
AA: 0.1C == 200mA/cell => 16h.
---------------------------------------------------------------
see pic below, the official specs for Eneloop AAA suggest:
AAA: 1C == 800mA/cell => 1.1h.
AAA: 0.1C == 80mA/cell => 16h.
---------------------------------------------------------------
If we collect the above 10 data points for AA and for AAA respectively and visualize them in a graph, then by visual inspection we can tell that the points are consistent (they both form a smooth curve with no outliers):
AA: relationship between input amperage/cell (mAh) vs. charge time (mins.)
AAA: relationship between input amperage/cell (mAh) vs. charge time (mins.)
It also means that we could choose any input amperage-per-cell from the blue curve, i.e. an amperage which lies between 0.1C (the "Break-In") and 1C (the "Fast Charge"):
Freedome for everyone!!
So following the Maha recommendation of min. 0.33C we get from the graphs: