April 12, 2013 sunpow Microsoft Surface Pro Battery Microsoft spared no expense when it came to keeping the Surface Pro going. They sourced the Cadillac of batteries from LG: an Escalade 42 Wh unit. The battery is rated for 7.4 V and 5676 mAh. AdvertisementShare this:TweetShare on TumblrWhatsAppTelegramLike this:Like Loading... Related