HTC Desire LeeDrOiD_HD_V3.3.3_GB-R5, Baseband 32.54.00.32U_5.14.05.17, Kernel 220.127.116.11 with VZA 1.0 connected to 7.1.2_GA_3268.UBUNTU8_64 UBUNTU8_64 NE.
Menu > Settings > Accounts and Sync > VZA
Untick Sync causes the device to heat up considerably and therefore kills the battery.
Why you'd do this - there's no option for quiet time
Just an observation that I thought I should share. Hope this helps someone somewhere.