I have a Coolook LiFepo4 charger and it’s output is 3.65v. It works fine.
http://www.ebay.ca/itm/Coolook-LiFePO4-battery-4-AA-cells-w-dedicated-quick-charger-dummies-/261094350794
Just bought the Intl-O charger, Just talk to Hank and he told me to expect a delay in receiving the items as to the upcoming Chinese Holidays.
Additional battery chemistry and charger, things got a lot more complicated. :bigsmile:
I have just bought this charger & 4 AAAs; to go with a couple of AAs [from an earlier posting]. http://www.ebay.com/itm/Coolook-3-2V-LiFePO4-battery-4-AAA-cells-w-dedicated-quick-charger-dummies-/251156688595?pt=US_Rechargeable_Batteries&hash=item3a7a1aeed3
Two questions Ouch :-
1) Does your charger correctly handle a partly discharged cell? eg a 600mAh AA run down to half capacity ie 300mAh. I note a 2 hour limit on charging at 300mA.
If the two channels are independent, charging two cells at different capacity levels should be OK - perhaps even an AA with a AAA.
2) As the AAA only has a 200mAh capacity [and costs about 10c less] it is charging at 150% - possibly with being able to discharge at 500% (5C) it may be able to handle charging at 1.5C? What are your thoughts on this?
THANKS
I’m no expert on chargers but this charger works like a NiMh AA AAA charger. It will cut off at 3.6v, not two hours. Don’t mix AAA and AA. Im sure it steps down a bit like a Nimh charger when using the AAA slots.
This charger does not ship with a power cord.
In Canadian Tire 
509mAh @ 1A, pretty acceptable for batteries rated 600mAh.
Voltage is pretty low though, compared to 1100mAh A123 cells.
I just got mine this evening upon returning from work 
. I ordered them from IOS. I figured I’d use them in my E03 and HD-1 which tend to run pretty hot on 14500’s (especially the HD-1). Hope everything works out fine… :nerd_face:
Those are 18650 cells, should of course be better compared to 14500 cells.
Well, at comparable load (~2C, therefore current of ~2A) A123’s maintained >3.2V over ~80% of capacity, these cells fell under 3.1V in the very beginning.
Most LiFePO4 cells have fairly low “C” rates, comparable to what most LiCo cells can do or even less. The A123 cells are different… due to the nanoscale materials that they are made with they can put out insane amounts of current and have very low sag under load.
The much safer PO4 cells are charged at 3.6V; standard Li at 4.2V.
Primary lithium cells are usually rated at 3.0V. (Some at 3.6V? AA/AAA are rated at an initial 1.8V; whereas a rated 1.5V Alkaline might start at an open circuit 1.6V, dropping with use to 0.8V).
The original posting covers these matters in greater detail
EDIT: Sorry for my waffle. A123s ARE PO4 too. I’m a twit!
My only excuse is being sleep deprived 
The 1100mAh 123A has a maximum continuous discharge rating of 30A (about 27C), those cells are simply on another level, that's why I think the comparison is forced.
I have just recieved these from fleabay and not real impressed.
At 1 amp discharge they were about 250mAH. At .5 amp discharge they measured 428mAH.
Sorry MRsDNF. 
Dont be. They will be used anyway. I have either these or the other ones (they have two different batteries on there site) from IOS on order as well.
Looks like it should do…if it does what it says. Check your voltage…and let us know.
Its current limit is always at 1200mA for 1.2V/3.2V/3.6V
It lists the charging end voltages (in Chinese, so I’m guessing) as 1.4V/3.6V/4.2V
Seems a bit much current for AA, and especially AAA, so I bought this one for my smaller LiFePo
http://www.focalprice.com/EB0093B/32V_Quick_Charger_for_AA_AAA_14500_10440_Battery_Black.html
Only charges with 300mA
Just arrived yesterday, haven’t tried it yet
-S
That’s the one I use for AA LiFePo4. I don’t know about Li IoN.
I just finished testing Coolook LiFePO4 AA’s in a Spark SD52. On ‘Max’, one with a dummy cell lasted about 1 hr. 2 lasted 1.75 hrs (more heat). 2 Enloops lasted 2.3 hrs, less lumens, most heat.