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Solar Powered Lead Acid Battery Charger

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amindzo

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I want to make a solar powered battery charger for lead acid battery with PIC16F877A. I found this application note in microchip website that is very useful but i want to change this to use solar cell and PIC16F877A.
**broken link removed**

In that charger they charge the battery with high current (1.0 A) but by using solar cell for my application i don't have this current, i should charge the battery with 270 or 300mA. i want to charge a 12v, 7.2AH lead acid battery and i have a 18v, 5W, 300mA solar cell so how can i change that charger to make my own one?
 

i don't want you to write a code for me. that code is C but i want to write my code in picbasic pro, i want you help me with changes in electronic devices and changes in the algorithm for my application.
 

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