The Mughals were so surprised by Roy's audacity that they were slow to react. Amin Shafi remained in Ahmedabad with 1000 men, believing Roy would be suicidal to attack the Mughals at their strongest point. Amedabad, perhaps did not deserve the name of "Hyderbad of the North", although of similar size it had no walls or defensive forts. Also Roy knew a major destructive victory was needed if his gambit was to succeed. Indeed, he could not afford not to attack at Ahmedabad on the 4th, in case he end up surrounded by another 1000 troops. So, on the 4th of November, the 8th Month of the war, the battle of Ahmedabad was fought.
Amin Shafi was caught by surprise, astounded that Roy would even attack. Especially against his position which was a high ridge with the city on his left. Roy tricked him by using the hills to screen his movements, arriving on the other side of the city, it now became a race to capture the city. In the street to street fighting Roy predicted he could funnel the Mughals, defeating their numbers with his superior quality troops. The confederates were successful in capturing most of the city before the Mughals. A solid attack now began to drive the Mughals out of the city.
On the cities outskirts, Roy set a trap. He remained at the artillery position, making sure his banners where very visible. Shafi, saw what he percieved as the Confederate general and artillery unprotected. He immediately ordered 3 dakhili, a significant portion of his force, to attack the Confederate position. If Roy was killed the battle was won. As the overconfident Mughals charged through grapeshot they were met with a surprise. Roy had hidden 2 dakhili of swordsman in a lee in the hill, invisible from Shafi's position. The swordsmen and elephants met the Mughals head on while cavalry smashed in from behind. It was a massacre.
In the city itself, the Mughals were in full retreat, their main HQ fell and some resistance in the southern quarter was all that remained. Shafi now saw the grand scale of his problem, his cannons were facing south in their dug in positions, and he was unable to turn them to face an attack from the west. His main assault had been annihilated and the city was lost. He could have saved his army if he had retreated, but instead all organisation broke down. The Confederates sweeped out of the city, overrunning his prepared defences from their undefended flanks
On the far right flank of the Mughal army, Shafi rallied his reserves and reformed. Roy had joined up with his forward units and ordered a full advance. Shafi's reserves, all that he had left to rely on where armed townsfolk, they were no match in line battle for Roy's experienced musketeers. As the Mughals fell back to their final position, Shafi was killed. The position fell soon after. At 7pm, after nearly 10 hours of battle. The Confederates held the field and the city. Over 1500 men were killed wounded or missing from both sides following the battle. Roy had some-how managed to escape unscathed, despite being in the thick of the fighting.