New Notebook Laptop Battery Replacement Battery for your Acer Aspire AS07B71, AS07B31, AS07B32, AS07B51, AS07B61, 7738G, 7740, 7520G, 7530, 7530G, 7535, 7535G, 7540 7540G, 7720 7720G, 7730, 7730G, 7735, 7735Z, 7735ZG, 7736G , 7520, 7736Z, 7736ZG, 615,6720s, 6730s, 6735s, 6820s, 550, 610 11.1V 4400mAh (Electronics)
Can only recommend, since it works only so far einwandfrei..Bleib seen whether it at least a couple years, the performance keeps as it is promised.