1.100% compatible with Original battery and no memory effect 2.Competitive price & prompt shipment 3.1 year warranty time For laptop battery (dell.1535),rechargeable battery,replacement battery Color:             BlackType:              Li-ionVoltage:          11.1VCapacity:         7200mAhWeight:            466gBattery Cells:   9 cellsMultiple safety protection:Overcharge,overdischarge,overcurrent,overtemperature,temperature controls switch,high temperature fuse gives extra protection.Fit Laptops models:dell studio 1535     dell studio 1536     dell studio 1537     dell studio 1555     dell studio 1557     dell studio PP33LCompatible battery models:312-0701,312-0702,km887,km898,km901,km904,km905 km958,mt264 mt275,mt276 mt277,pw772 pw773,rm803 rm804,wu946,wu959,wu960 wu965Note:12 months warranty,passed CE, UL,RoHS, SGS, ATC, REACH, ISO9001:2000, ISO14001:2004 

For laptop battery (1535)