I built all of them with 3S cells, and yes LVP works fine. There is a number of different combinations that you could use (it is the ratio between the two that matters), but here is one I've been using lately:
R1: 36K
R2: 4.7K
~9V ADC Value: 240
~8.5V ADC Value: 232
All of mine were piggybacked 17mm BLF17DD-Z boards, with off-time memory and a turbo timer. The later ones I did were using fast PWM.