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-   -   A123 battery setup (https://www.rcuniverse.com/forum/electric-training-102/8382650-a123-battery-setup.html)

Deathawk 01-21-2009 12:12 AM

A123 battery setup
 
Im looking for A123 battery articles and How do's..I have read some would like any info..Can take out of Battery packs..saw Video on youtube,,anybody know MAH of the 36 v batteries..Any why use these instead of Li=po's..fast charge for one..Comments appreciated in advance.
.Have a Good Flying Day..

evdreamer 01-21-2009 04:56 PM

RE: A123 battery setup
 
This is a pretty good article on how to build an A123 pack from a Dewalt battery. http://www.rcgroups.com/forums/showthread.php?t=599316 I just buy my cells from BPHobbies instead of disassembling a Dewalt battery.

If all the cells are in series then the capacity is 2300mAh.

Some advantages are no puffing, not easily damaged, can be discharged 100%, and lasts over a 1000 cycles. I use them in my big helicopter and love the batteries.

cyclops2 01-21-2009 05:39 PM

RE: A123 battery setup
 

They can take being landed in heavy grass with the motor still pulling tons of amps. I do it quite often by accident. I am 71. [:'(]
ABSOLUTLY no changes to the batteries. LIPOS would be puffing of trying to burst into flames. Either of those conditions wipes out the battery and means a replacement.

If you THINK CAREFULLY before cutting the jumper straps between the groups of 3's or 4 cells, you will NEVER risk soldering directly to a battery end. I always make each pack into 2..3 cells & 1.. 4 cell.

I now cut a 4 cell into 2..2 cells.. for a high KV motor used in pusher planes. Piece of cake.

Try to ONLY..ONLY solder to the cut in 1/2 jumper straps. It is possible to overheat a end of a cell if you solder without the strap on it. The welded on straps are very good connections.

onewasp 01-21-2009 05:57 PM

RE: A123 battery setup
 
Quote ".....I am 71. ...." Quote

You are but a child__________ !!
Everything is relative.

cyclops2 01-21-2009 06:19 PM

RE: A123 battery setup
 
:D

When I fly, It looks like a child is the pilot. :eek:


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