I purchased the above charger for use with an Ampre Time 100 AH Lithium battery. Because the BlueSmart specifications did no match the AT requirements, I customized the settings to change the storage voltage to 13.6V. All other settings were ok per AT. The max charged Ah is 51.6 on a 100 AH battery. I've since changed back to Li-ion with no improvement. What needs to be done to get this to charge reliably to 100 AH?