First, is the battery the same type as your original, meaning flooded/wet, or AGM (glass mat)? If not, it needs to be coded to the car. Capacity is not the issue.
Check all your battery connections.
Go get a cheap $10 multimeter, and check voltage at battery, with engine running. It should be about 13+ to 14+ volts. Compare to another car if you are unsure.
The voltage on a battery, without car running, and having sat overnight, should be about 12.5 volts. Again, compare to another car.
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