<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I take my batts to the field at 50% and leave the field at 50% charge. If I can't do that, then I discharge when I get home. My batts seem to last a long time. </div><div><br></div><div>The (dis)charger is supposed to get hot, that is where the energy from the battery is going - into the heat sink. That's Ok, my PL 8 gets hot too. </div><div><br></div><div>The PL8 can only discharge 100 watts by itself, but can do much higher if it is using "regenerative" discharge - dumping your LiPo's charge back into a lead acid battery. I don't know if the 10X has that capability or not. Otherwise I'd just keep using the low discharge rate, or plan your flying day to end with a storage charge. </div><div><br></div><div>Wow, that was a lot of typing to do on a phone!!<br><br>Sent from my iPhone</div><div><br>On May 8, 2013, at 11:15, "Bob Kane" <<a href="mailto:getterflash@yahoo.com">getterflash@yahoo.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span><font size="3">I have had to abort a couple of planned flying sessions so far this spring due to weather. I have read that lipos should not be left at full charge for any significant length of time. So what is a </font>significant<font size="3"> length of time?</font></span></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 16px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><span><br></span></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 16px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><span>Hours? Days? Weeks?</span></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"></div><div style="font-family: 'times new roman', 'new
york', times, serif; font-size: 12pt;"><br></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">My Turnigy 10XS charger has a discharge/storage mode, but the maximum discharge current is 1 amp. It takes a couple of hours to bring a 10S pack down to storage level, and the charger gets pretty warm(!) during the discharge. Up to now I have only worried about discharging the pack for long term storage.</div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><br></div><div>If leaving the cells fully charged for more than a day or so is bad, I am considering building a dedicated discharger, there are some pretty simple yet effective designs on RCU.</div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> </div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">Bob
Kane<br><a href="mailto:getterflash@yahoo.com">getterflash@yahoo.com</a></div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>NSRCA-discussion mailing list</span><br><span><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a></span><br><span><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></span></div></blockquote></body></html>