I have to power my arduino and the GPRS shield with a 12v 7000mah battery but I am not sure how should I connect it. The GPRS shield needs a 5v @ 2A but I don't know what about Arduino uno, does it needs something max 1A or I can give more than 1A? What are the solution to convert 5v @ 2A and give…

Power adapter and external power

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