सुबह परेशानी शुरू/Every Morning Starting trouble /Self or Battery ?

Starting trouble in morning time or long time stand by condition , Found battery voltage drop lessthan 7volt, When cranking or load condition . Actually when cranking the actual voltage not goes down 10v which is healthy battery.
Battery voltage good condition
12.5 volt when rest
11- 9.5 volt When cranking with load
we found in this vehicle
10.5 v No load condition
7-6.5 v when crank
we also found all the battery cell electrolite become black which means some cell is internally broken .
also we found 1 of the battery cell is dry condition.
For this reason this battery internally short to ground internally and also we found internally discharge the battery.

[@Vaibhavss116]

Tuhin bhai please meri help karo mere paas Verna hai 1.6 2019 model 71000km chala hua hai suddenly kuch dino se clutch release karne par car bhut jor se jhatke leti hai har baar nhi leti but kabhi kabhi leti hai kitna bhi slow releas kro baaki car ka pickup and mileage accha hai meri car city mai bhut kam chali hai only highway par most of the running hai. Please help