I just returned from a two hour flying outing. I use two Sony 18650 cells (aprox. 1600 milliamp each) in parallel for my battery. I charge them to 4.46v with an old cell phone charger that only puts out that much voltage. I had one 5-minute flight and one 30-minute flight. I also had a few other shorter flights. I left the plane on a lot of the time and when I was done I checked the battery and it showed 4.43v. I lover the Li-ION cells for my planes. If I forget and leave the plane on for lunch (or just leave it on all day for convenience) I don't have to worry,
John -----Original Message----- From: Rick Eckel [mailto:[EMAIL PROTECTED] Sent: Sunday, April 17, 2005 1:53 PM To: James R MacLean; soaring@airage.com Subject: Re: [RCSE] battery choices Personally I'd recommend the 1100MAH NiCd. They have plenty of capacity for thermal duration. Although I own and use NiMH batteries I prefer nicads for receiver packs. Either technology will do but in either case be SURE to do a FORMING charge FIRST. Don't get new cells and start quick (peak) charging them until you have done a 150% capacity (time x ma) slow wall wart charge cycle! Of course you already know that, Jim.... ;-) Hope this helps Rick At 02:41 PM 4/17/2005, James R MacLean wrote: >Its too windy to fly here on the east coast of Florida, so maintanence >time. (Yes, I know, what a wimp. I can and have flown contests in pretty >bad wind but why risk a plane when there will be better days soon.) The >question is about batteries. I need to replace a number of sailplane >batteries. They all hold a square pack of AA size. It appears to me >that there are only two packs which make sense: the 1100MAH NiCd and the >1650 NiMH. Both are nearly identical in cost, weight and size. I have >the appropriate charger which is rated for either and does a good job in >a reasonable time. Both cells are made by Sanyo which usually means >excellent reliability and service life. Sailplanes generally don't draw >extreme servo currents so I expect the hydrides to be sufficient in that >respect - the nicads are usually superior in high current applications. >What do you think? Any data / experiences to suggest the better choice? >Thanks for your thoughts, Jim MacLean >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 Richard A. Eckel, PE, NSPE Eckel & Associates, Inc. 1757 W. Broadway St. Suite 3 Oviedo, FL 32765 Professional Engineering for Petroleum Facilities Office: 407-366-8852 Cell: 407-733-6380 [EMAIL PROTECTED] 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
