Sorry guys . . . not to belittle your experiences, but I just did business with Batteries America twice in the last month and had just the opposite experience.
Twice I ordered 12 1/3AA 350 mah Nimh cells and received my shipment in about three business days or so. I've built three, four-cell flight packs so far and after four cycles each, all perform at or above their RATED capacities (RATED capacity means cycled down to 0.9v/cell . . . and not . . . 1.1v/cell which is USEABLE capacity). These were "break-in" cycles with the charge at C/10 for about 12 hours and the discharge (with the cells still warm) was at 300 mah to 0.9v/cell. Remember, especially with NiMh, if you use a fast/peak charge (even with a Sirius), and then dump to 1.1v/cell, you'll never see 1500 mah out of a 1500 mah on a cycle for example. Also, if you use a fairly high discharge rate (0.5 - 1.0 amps or so) AND your cells have high internal resistance, the cells voltage will depress more quickly and you'll hit your target discharge voltage early. High capacity does not necessarily equate to low internal resistance. I have purchased even Sanyo NiMh 1700 cells which had very bad voltage drops when you applied 0.5 amps and had to use them in my CD player instead. The downside to NiMh cells is that they need nearly perfect conditions to hit their rated capacities (and of course some just won't no matter what). The upside is that you can confidently "top- them-off" at the field frequently without "memory" worries. You probably knew all this, but I'm passing it on for those out there who may not. Sorry for your experiences. --- In [EMAIL PROTECTED], "Douglas, Brent" <[EMAIL PROTECTED]> wrote: > > FWIW, I learned to fly with Dave Thacker of Radical RC here in Dayton, > and I've never had any problems with his packs, period. > > Same good luck with Diversity (flydma.com) battery packs - especially > good for high amp, high performance packs. He really knows what you > should expect to get out of a given cell, how much of a charge you can > give the cells, etc. > > Just felt like a good time to acknowledge some of the good guys out > there (like Johnny). > > Brent > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
