At first I was a little disappointed when I first realized that LiPos take more than an hour to charge. I figured that if I was charging at 1C then they would take 1 Hour to charge...makes sense right?
Well, as stated below my normal charge time varies between 70-90 minutes. Generally it's right at 89 minutes every time. After about 2 minutes the battery starts to charge at 1C (I guess the charger has to figure out some stuff first...) It stays at 1C for probably about 45 minutes or more then drops down to about .5C. From there it steadily drops. Once it hits the 45 minute mark the charger is showing that the pack has a voltage of 12.6V (3S pack). It stays around 12.59-12.60 for the rest of the charge. It would be nice to have batteries that don't weigh as much as NiMH or NiCd that pack just as much punch. What would be even better is if these batteries charged just as fast as NiCds and didn't explode :) Jared -----Original Message----- From: Mike Bailey [mailto:[EMAIL PROTECTED] Sent: Friday, April 08, 2005 1:49 PM To: soaring@airage.com Subject: Re: [RCSE] Re: new batteries You are right. Mike ----- Original Message ----- From: "Doug McLaren" <[EMAIL PROTECTED]> To: "Mike Bailey" <[EMAIL PROTECTED]> Sent: Friday, April 08, 2005 1:30 PM Subject: Re: [RCSE] Re: new batteries > On Fri, Apr 08, 2005 at 01:30:56PM -0500, Mike Bailey wrote: > > | I cannot remember the numbers exactly but with the current li-poly cells > | about 80% of the charge occurs in about the first 30 min of the 1 hour > | charge time. > > No, that's not quite right. > > I'm not aware of any LiPo cells that allow charging over a 1C rate. > So you charge at 1C for the first while, and then once the battery > gets mostly full the charge rate slows down. > > Assuming you're starting with an empty battery (as empty as it can > safely be), and set your charger at the 1C rate, after 30 minutes the > battery is 50% charged. After 45 minutes it's 75% charged. But soon > after the charge rate slows. > > Eventually the battery is 100% charged, but it took more than an hour. > More like 90 minutes. > > -- > Doug McLaren, [EMAIL PROTECTED] > Puritanism: The haunting fear that someone, somewhere may be happy. 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
