Turnigy LiFEPO4 packs

[othello]

Glad to see that you are putting your datalogger to good use. I was eager to see some discharge graphs of those batteries.

I browsed through my logfiles and found a comparable one where i used 8s2p A123 cells. I zoomed into a 108A discharge peak.


. @108A voltage drops to 22.14V or 2.7675V per cell
. discharge state of my pack at this point: 1/3

There are many parameters influencing v drop: internal resistance of the battery pack of course which depends on cell temperature, cell count, solder job, discharge state and so on ...

Judging by this single discharge peak there shouldn't be that much of a performance difference between a 2p A123 setup and those turnigy packs.

You may want to browse through my eagletree file.

Maybe you could attach yours too.

[sikeston34m]

Wow! Thanks for the graph. The proof is in the pudding huh?

They are pretty much the same. My graph was fully charged but on a cold day. 35 degrees or so outside.

Yes, there are many variables that alter a packs performance. That's for sure.

You can see most of my graphs so far on Photobucket under sikeston34m