On Tuesday 03 December 2002 23:32, you wrote: > I would like to replace a pair of 6v lantern batteries in a lantern with a > sealed lead acid or gel cell battery and would like to know about charging > them. I figure I can apply 12.5-13.5 volts DC though a wall transformer, > do I need to add a current limiting resister or have I got this all wrong?
I would go higher in the voltage also. Lead Acid batteries have an internal resistance which goes up with age. Many chargers use a transformer (12V AC) with a VA chosen to provide maximum current, and let that sort of self regulate. They use no smoothing as a rule - let the battery do that ;-). Clever chargers also use battery voltage to turn on the charger; If you are going to have this feature, provide an override for it. -- Regards, Declan Moriarty. -- Author: Declan Moriarty INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
