Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good stuff, but concerned about instructions

It says you need to charge at least 18 hours before you can use it.When I plugged it into charger it said like it is charged already, same effect with second battery.Strange...As well I cant understand why it says you need to charge before every new drive,it should contain memory and based on its ni nature it is better to uncharge 100% before starting new charge at least 3 times.