Hello,
I had put my 3s lipo to charge with the b3ac charger but  even after
1.2 hrs of charging, all the three cell indicators are red....

Check the cell voltages with a LiPo tester/ multimeter. It may be that the LiPo is damaged. The charger also has a time based cutoff I think so disconnect the battery measure the voltages and then decide whether to continue charging or not.

i dont have a multi meter ...
will get it tomm...

the cell is new.. never used and never charged

If that was a 1500mah or greater battery then need more time to full charge.

Akhilzid sir, I have a 1500mah and it charges for about 2 hrs and then after that two LEDs are on but the third one is still red and the charger doesn't charge anymore and the charger which gets heated up for these two hrs suddenly cools down and it seems like it is not charging.. Don't know if there is some problem with it or ...

Same problem i have.@darshan fr multirotors.
just that my batt. Is 1000mah.

Such charger have a safety cutoff of 120min even chargers like turnigy accucell have it so to full charge it disconnect power to the charger and again reconnect and it will start charging again

@prabal276 , am using same charger ,it will take upto 3 to 4 hours for 3S 1500 mAh,once one cell becomes green,all will turn green faster. !!

I will be getting a b6 very soon.....you also must consider a b6

@ Himadri Roy,well said,I have noticed that ,when my cell got stuck at red,reconnecting after sometimes did work for me

Mostly my battery's 1st cell becomes green after 1 and a half hour and then it takes no time for the second one to turn green but then it completely stops..
I will try what you guys have advised

Hey problem sorted...
the charger had cut off elec. After 1 hour had to plug it again..

ADMINS pl close topic..