Battery discharging quickly


hi, have macbook pro 13in 2011 model. couple months battery life had been bad, around 2 hours of normal usage. decided new battery laptop (cost me $130 @ apple store). anticipated new battery life performance when got laptop back, @ 50% estimated 2 hours left. suppose low? coconut battery says battery has 0 cycles (duh) , discharge rate 13.2 watts. thing high on energy usage safari right type forum post.
 

new batteries come partially charged minimize wear , maximize shelf life.
 


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