I bought an used G50-70 laptop without battery. I ordered for it a battery from ebay. (LINK)
The voltage is 14,8V (instead of 14,4V it would be normally) and the capasity is 4400mAh/65Wh (normally 2200mAh/32Wh).
Now when I put the battery to the laptop it says plugged in, charging at 61%...