Open Circuit Voltage of a fully charged lead acid cell is
(A) 1.9 V
(B) 2.0 V
(C) 2.7 V
(D) 2.5 V
Ans: (C) 2.7 V
Requirement of Batteries
1. It should be capable of supplying a large current at a constant output power
2. Its output voltage should remain constant for all the load currents.
3. Storage time should be as long as possible.
4. The battery should be compact and should occupy little space.
5. It should be rechargeable and maintenance-free.
6. It should be cost-effective.
Important value per cell voltages for lead-acid batteries
1. Normal voltage---- 2.4 V
2. Nominal Voltage ---- 2.0 V
3. Final Discharge Voltage --- 1.8 V
4. Float/trickle voltage ---- 2.15 V
5. Boost Voltage --- 2.6 V
6. Extended charging Voltage --- 2.65 V
