SolutionHubTech replaces individual battery cells in portable Marshall speakers like Kilburn in Faridabad. We swap degraded Li-ion cells causing reduced runtime or swelling. Using matched cells, we recalibrate BMS for accurate charge reporting. Restore full portability without buying new batteries. Service covers Stockwell, Tufton, and Emberton models in Faridabad. https://solutionhubtech.com/marshall-repair-in-delhi.html