babalola our present output of the inverter and input to the transformer is app. 6-8V, we cant use the same output transformer for battery charger because its an 8:230V transformer and for charger we must have a 220:12v transformer at least, other wise we have to use buck boost converters to regulate power and current rating of charger which itself is a complete project, we can design a transformer for both values (8V and 12V) but still we cant use it for both purposes because for charging output current of 12V side may increase upto 10-20A (typically 7-10A), which furhter arise overheating and over load issues of the transformer so the cooling system must be upgraded for the reason.it is difficult to implement but not impossible, using proper system and high quality transformer we can use it for charging. also please consider transformer loss strictly, less loss, more relaxation for us
Also present code occupy sufficient space in the MCU memory, My recomendations are not to increase load on present MCU for better performance, but we can use it in a simple way i.e using relay logic, first find a high quality transformer haveing 230:8V and 12V tabs (i.e if 230V is input it must have two output tabs at the same time 8V and 12V may be easily available in your local electronics market) then i'll help you how to implement relay logic.
Best Regards
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daniello_85 Output filter Choke is EPCOS 2x6.8uH, 4A
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Californiajoe I have Altium Designer09 installed in my computer which is present version of Protel, I hope it will open your PCB files too, also if you can save it as Protel Advanced file I can edit it in Altium Designer.
Best Regards