Quote:
Originally Posted by suicideneil
Ignorant? Me? Impossible.
I appreciate you can make a pretty good electrical connection by sticking your fingers in a plug socket, but my point was that some gooey paste between heavy cells that will be josstling around isnt the best method to make a secure connection. I also know that A123 cells need special solder and flux to solder them together, but you can also get these cells with the solder tabs pre-attached (like from a dewalt pack), so soldering them into packs for rc use is a doddle with even a meager 50watt iron and ordinary lead-free solder. As for balancing- I really wanted to believe you didnt have to balance these cells very often either, one of the reason why I have 4x 6cell packs of them. Truth is though that certain charges like my BC6 wont balance charge these packs, so at the end of charge one cell alsways seem to race away to 3.6v volts whilst the others are still at only ~3.4v or so. I then have to balance the the pack at a lower charge current until all the cells are at 3.6v.
Dont know why that is, and it doesnt happen with my lipos as they all balance charge perectly fine, just seems there isnt a balance charge mode for A123 cells.
So, Im not arrogant or ignorant, as I have plenty of practical experience  |
Arrogant? I thought the pooping reference was kinda funny. However, Pete is a friend so I felt compeled to respond in kind.
I'm not afraid to embrace my ignorance as I'm ignorant about a great many things. Sometimes ignorance is bliss
However, I'm not ignorant about SPT packs and I can tell you from experience that they are a very good solution for rc cars. I'm not going to try and change anyones mind if they have already made it up but until you actually have experience with a product, one should take your opinion with a grain of salt. In other words, I'll trust your opinion about SPT packs just about as far as you can poop one out your butt.
