My 2-cents worth
Go with the Extech MA220 as it is a good quality meter. True it exceeds your needs at the moment, but you did say your first project which indicates you expect to grow the system or do other systems in which case the meter will grow with you. For $54 it is a heck of a deal
In addition to being able to read DC amps up to 400 amps, more importantly is for battery systems you need to be able to read small DC voltages very accurately when measuring battery cell voltages down to 1/1000 of a volt.
Go with the Extech MA220 as it is a good quality meter. True it exceeds your needs at the moment, but you did say your first project which indicates you expect to grow the system or do other systems in which case the meter will grow with you. For $54 it is a heck of a deal
In addition to being able to read DC amps up to 400 amps, more importantly is for battery systems you need to be able to read small DC voltages very accurately when measuring battery cell voltages down to 1/1000 of a volt.
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