Turnigy Low Self-Discharge (LSD) NiMH AA's

[JERRY2KONE]

Originally Posted by BrianG

lol, that works. See? That wasn't so hard...

I guess you can teach an old dog new tricks. Some things just have to be explained to me or shown to me once, before I get it. Anyway thanks for the info BG.

So come on people place your orders for LSD AA batteries. The bigger the order the better the price. I know everyone uses AA batteries around the house.

[skellyo]

Originally Posted by JERRY2KONE

#1 hippie 20 cells
#2 brian g 30 cells
#3 JERRY 30 CELLS

40 cells remaining.

Where are all the slackers that were jumping at a group buy? Here it is! If you guys don't hop on this train, it's leaving the station without you.

[JERRY2KONE]

Hey Sean do they have AAA batteries to? Maybe we can get a few of those as well since you are already working on a shipment. I would take 20 AAA cells as well if that is possible.

[squeeforever]

Originally Posted by JERRY2KONE

Hey Sean do they have AAA batteries to? Maybe we can get a few of those as well since you are already working on a shipment. I would take 20 AAA cells as well if that is possible.

Yea, Hobbycity has AAA.

[rchippie]

Originally Posted by JERRY2KONE

Hey Sean do they have AAA batteries to? Maybe we can get a few of those as well since you are already working on a shipment. I would take 20 AAA cells as well if that is possible.

Jerry that will have to be on another order. This order has all ready been placed & payed for . We hope to have it this weekend or early next week if were lucky.

Sorry, been busy, didn't get by yesterday -

#1 hippie 20 cells
#2 brian g 30 cells
#3 JERRY 30 CELLS
#4 Duster_360 - 30cells


Thanks Sean!

[BrianG]

Cool, hopefully everyone is happy with these cells. The 5 I got are still working well for me. Just remember: charge at ~0.3A for best results. 0.5A would be the very max I'd charge at if you're in a hurry.

[skellyo]

Originally Posted by Duster_360

#1 hippie 20 cells
#2 brian g 30 cells
#3 JERRY 30 CELLS
#4 Duster_360 - 30cells

10 cells still available. I can let an additional 2 cells go from my allocation if someone needs 12 though. Just let me know.

[simplechamp]

I'll take the other 10

[BrianG]

The next thing I am going to do is make a charger for these. Yeah, you can use your R/C charger, but I am also going to want something smaller for trips and such. I've already drawn up a circuit which uses a constant current charge (0.3A) with temperature peak detection. It will charge two cells at a time, but the circuit is simple enough that making banks of two to get 4, 6, 8, etc will be easy enough. Power requirements will be ~6vdc and ~0.35A for each bank of two cells. So, charging 4 cells at once will require 6v @ 0.7A, which cheap "wall warts" can supply.

[suicideneil]

Dammit man, you said you were working on my Delorean....

Would it be okay to charge these kinda things ( I bought some Energizer AAs only a month ago, shame.. ) in a little rx pack-type cell holder, then connect it to an r/c charger? I have a couple old normal wall chargers, but I dont know the current output as the labels are long worn off- a low current in the sub 0.5amp range wouldnt melt the contacts or wires I imagine...?

[BrianG]

I accidentally sent the Delorean into the future without a passenger so I have no way to get it back. Sorry.

Anything 1A or less is fine in a holder like that. Just be aware that the higher current you charge, the higher the charger voltage will read because it has to overcome some voltage drop across the small wires and not-so-good contacts.

[Metallover]

I figure I am ordering too small a number of batteries to get in on this. Count me out of the group buy.. I will definately get some with me next order tho!

I charged the batts today and they got very hot. They melted the 1st 4 cell holder. I changed the holder to a new one. Hopefully it doens't melt this one as well. I set my charger to 0.3A. Should I set the final voltage to read 4.8v? Or let it charge to over 5v? I'm using it for DX3S on 4 AAs.

[BrianG]

What did you have your delta peak set to? I set mine to the lowest value on my charger (3mV per cell IIRC) and it works fine.

The charger I am designing uses thermal peak detection so once the cell gets to X*F, it shuts off. I feel this is a better method to detect when full charge is reached without relying on an unknown delta peak value that works well with these cells.