Originally posted by Brangdon I have the same charger. It defaults to 1,000 mAmp charging current, so it takes under 2 hours for 1,800 mAHr Eneloops, and you can set it for higher current and faster times if you want.
eneloops are rated Typ. 2000mAh; Min. 1900mAh:
When the Maha C9000 first indicates DONE - mostly this is a termination on Peak Voltage of 1.47V (*see later) achieving about a 90% charge
Then there is a period of about 2 hours where a topoff charge of 100mA is applied to reach true full charge, before dropping into maintenance trickle charge of 10mA - crops from the Maha/PowerEX C9000 manual -
So to give the eneloops full charge using the default 1000mA charge current - would be approx 2 hours as indicated
+ Plus the 2 additional hours of TopOff charge at 100mA
- so a total of 4 hours - which is not really fast.
(*the C9000 has many termination strategies to keep batteries safe - but 1.47V termination seems to be the operational one both reported and seen by myself on eneloops and most NiMH in good condition - this as reported in tests achieves about 90% of full charge - which for most purposes is good enough BUT the additional 2 hours of TopOff charge at 100mA would be the full charge)