<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">TP does have a 10s1p 5000 V2. I borrowed one and flew a few flights on it, but it was before I had the CellPro. It's performance was very good but it did seem to have balance issues on the TP 1010/210. I'm going to be out of it for the next two weeks but I'll try to test it again when I get back. Perhaps the CellPro will keep it in better balance.<div><br></div><div>Jim</div><div><br></div><div><br><div><div>On Sep 17, 2008, at 9:04 PM, Scott wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div> <div><span class="279212203-18092008"><font face="Arial" size="2">Hey Electric Guys,</font></span></div> <div><span class="279212203-18092008"><font face="Arial" size="2"></font></span> </div> <div><span class="279212203-18092008"><font face="Arial" size="2">I'd be interested in what LiPo battery configuration you are using.. 5S2P, 5S4P, 5S1P... other. Why?.. read on. I believe the less "P" you have in the battery the easier to balance and possibly the longer life you will get due to better cell balancing before charging. I have recently converted to a new cell by TP, some of you saw this at the Hollister contest. The 5S2P, 5200 pack, is working great. Jim Oddino and I checked the internal cell resistance, which was around 3milli-ohms (if I recall correctly). This battery puts out 156A burst, the older 5s4p, 5300 pack put out 109A burst. My thinking is this, the lower "P" pack you have the easier to keep the battery in balance. If you have a 4p pack, any one of the 4p cells can degrade over time, causing the 4p 'bank' to not supply as much sustained current - causing the whole battery to be weaker. Jim and I played with a Cellpro 10S charger, and I think we concluded that it would be difficult for any charger to determine if any one cell in a 4p bank was going bad (you can only monitor the bank IR, not the individual cell within the bank). However, if you had a 1p 10S pack, you could easily tell if the cell was gaining resistance as it aged. On a 2p pack, the resistance CHANGE may not show up as easily as a 1p pack but much easier than a 4p pack. We are trying to determine here when a 5S pack is getting weak (yes, we can see as we fly - but if we could determine as it happens, perhaps we can correct this by charging differently). Jim O mentions he has not seen a battery with as low of internal resistance readings as the new TP pack, which equates to more power, less heat in use, and I hope longer life. I will mention here that my 5300, 5s4p packs have lasted 2-3 years and many, many flights, but they are getting old.. and the new packs may last 3-4 years.. they are also around $250 each.. a reduction in price from the 5s4p packs. I believe even newer technology will soon show us a 10s1p pack from TP - and some may have this now from other manufacturers.</font></span></div> <div><span class="279212203-18092008"><font face="Arial" size="2"></font></span> </div> <div><span class="279212203-18092008"><font face="Arial" size="2">I'd be interested in your opinions on this topic.</font></span></div> <div><span class="279212203-18092008"><font face="Arial" size="2"></font></span> </div> <div><span class="279212203-18092008"><font face="Arial" size="2">Scott</font></span></div> <div><span class="279212203-18092008"><font face="Arial" size="2"></font></span> </div></div> _______________________________________________<br>NSRCA-dist7 mailing list<br><a href="mailto:NSRCA-dist7@lists.nsrca.org">NSRCA-dist7@lists.nsrca.org</a><br>http://lists.nsrca.org/mailman/listinfo/nsrca-dist7<br></blockquote></div><br></div></body></html>