Voltage limited to CONSTANT 15.0 that group 24 will start out at around 35 amps charge rate then decrease rapidly from there. Expect to regain around 22-30 amp hours in an hour's charge time at an instant charging level of 15.0 volts. Know of any portable chargers that can start out and maintain 15.0 volts on a group 24 battery? If you do please let me know which one so I can buy one too. The OP is going to end up with the lifestyle of a Neaderthal trying to conserve precuis amp hours. IMHO this is silly. Even WITH the Magnatek an AGM will get more amp hours stuffed in it using the generator rather than the alternator. It is HIGHLY suggested that some time spent gaining hands-on experience versus theory be conducted. You might be surprised at what you'll discover...
