pdanet bluetooth tethering to tablet sucking battery fast


Hi Does anyone know any*apps*that does bluetooth tethering from your phone to the tablet. I have been using Pdanet and for some werid reason i lose 10% in about 20mins which cant be right. the phone doesnt lose battery not really at all which i thought that would use a fair bit. Wifi on the tablet is better then bluetooth for battery. I have a samsung 7.7. Im just thinking it has to be the app.

Thank you