buying new oem battery

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http://forum.xda-developers.com – my battery kinada messed up so i wanted to buy a new one. I check my local future shop and they only sell 1 oem one but there a difference between their and my official one. The one that come with my s3 is 3.8 V Li-ion and 7.98Wh future shop oem battery is 3.7 V Li-ion and 7.40Wh would the future shop battery harm my phone or less usage? the link to future shop oem battery http://www.futureshop.ca/en-CA/produ...e0aede4de1en02 Attached Thumbnails   (HowTos)