wow thats rough. i just did a short battery of tests on my phone to make sure nothing changed since the last time i tested. discrepancies are well within a reasonable margin of error for a single quick test, so i feel pretty safe saying n9bm isnt addng any drain to my phone.

averages over 10 min, measured every 30s:

with everything else disabled (no bt/wifi, screen OFF, no sim card, etc):
with n9bm: 5.2mA
without n9bm: 5.1mA

wifi connected in low power, simcard in, 3.5g on but unused, low-power-screen on with billboard, etc:
with n9bm: 42.0mA
without n9bm: 46.2mA