psyke83/android_device_huawei_u8160 — comment on commit f877fd8bb6fe312b3130b3dd7fc3ae123490bef4
File:  line 0
By psyke83:

It's quite simple: battery. The shorter the interval in which the driver scans, the more energy that will be used.

I've been using a 1 minute interval for a while and it's given no problems with connections being lost.