On 27 Dec 2013 at 17:48, Buddy Mills wrote: > And last but not least can > someone tell me how I know that they are at ½ charge for storage.
I can't answer the other questions, but when I store lithium batteries I normally charge them to full, then discharge them to between 50% and 70% SOC based on the published capacity. For example, with a 20ah battery I use 8- 10ah. Depending on the voltage, you can use an incandescent lamp of some kind as your dummy load. For 12v or 24v modules, I usually use inverters and a 250w incandescent heat lamp. A couple of auto sealed beam headlights (if you can still find them) would work too, but would be slower as they use less energy. For small batteries or single cells, you could measure AH with a Watt's Up meter ($55-60). One caveat is that its specs say the minimum voltage for it to self power from the measured source is 4v, so it may have trouble with single lithium cells unless you get the optional cable (about $3 more) and power it externally. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
