I know that my battery has a capacity of 1600 mA but when I discharged it completely and charged it again the charger indicates that it charged it with 980 mA. Does that seem odd?

Also when I begun to discharge the battery, the battery checker indicated that the battery wasn't "safe" and it was in the "attention" levels and I only used the battery for 3-4 minutes of buggy runtime. Does that seem odd as well?