>> Questions
1) Is my values ok?
They look nominal to me.
2) When my batteries dead it’s showing 1.1V to 1.2V not 0V.what is the correct voltage after discharge the batteries?
A battery should NEVER be discharged to 0V, else it will be damaged.
On the web look for charging/discharging NiMH batteries, a graph showing the range of voltages which the battery must be operated.
3) I want to discharge my batteries how can I discharge my batteries otherwise it will take long time to check with my circuit. Is there a separate circuit for discharge as well?
You can discharge your batteries using a suitable resistor, I would suggest that you discharge at the C5 rate, look at the web graphs.
4) If I charge half charged batteries with this circuit it’s charging with the calculated current only few minutes, when the voltage rise the current limits. So all the other hours it’s decreasing the charging rate. (Charging with the calculated current only with few minutes)
I would expect this to happen, you cannot be sure where the battery is on its charge/discharge curve.
Some users recommend that you fully discharge the battery, before recharging. Its important that you use the recommended charge/discharge rates if you want to maximise the life of the battery.
When the battery voltage equals it’s charging with the voltage. No current sending to the batteries but meter reading is (5mA-10mA).
This current is a residual current and should not harm the battery.
5) How did you calculate the 10mA from the divider chain? & the other values 182mA?
The 10mA is from ohms law, you know the voltage across the divider and the sum of the dividers resistors and I=V/R
The 182mA, is calculated from the +0.6Vbe transitor 'turn on voltage' and and the 3R3, ohms law again.
EDIT: added 2 *.gif from web. Remember you have two cells in series.