Battery Low [Q] Galaxy Tab Battery Drain

I have Samsung Galaxy Tab GT-P1000, running [ROM]SGT7 CM11.0 UNOFFICIAL [4.4.2][P1/L/N][Kernel 3.0.x][build 20140112].

My Tab's battery drains rapidly when I turn on WiFi Hotspot. Otherwise battery performance is good.

Please suggest whats the problem and solution if any.


br,
Kishor B