I think that I used to know about battery charging but as 40 years go by ...... I need to charge a 75AH battery. In my days it used to be considered that a 10 hour charge/discharge (ie 7.5 amps per hour) rate was most efficient. However I do not believe there is any reason why a battery of this type could not be charged for a longer time at a lower rate (ie for ease 3.75 amps for 20 hours) and still achieve full charge. Is my memory playing tricks on me or did I never learn properly in the first place? Logic behind this question is that the domestic battery chargers appear to have a cut off at 70AH batteries and almost double the price for another 30AH. (I am quoting what the manufacturer states is the recommended highest battery capacity). Would appreciate comments but be kind to an old man!!
What makes you think that this is the place to ask?
See: http://www.keil.com/forum/ - what does it have to do with Keil products?
Are you intending to make amicrontroller-based charger?
Yeh sorry to all. My Google search threw up this forum - clearly the wrong place but thanks for the info anyway. Once again my apologies.