Battery Energy Storage System Market Size and Forecast (2020 - 2030): Global and Regional Share, Trends, and Growth Opportunity Analysis by Battery Type (Lithium-ion, Lead-acid, Flow Batteries, and Others), by Application (Residential, Commercial, Industrial, Utility-Scale, and Others), by Connection Type (On-Grid, Off-Grid), and by End-Use Industry (Renewable Integration, Energy Management, Backup Power, and Others), and by Region (North America, Europe, Asia-Pacific, Latin America, and Middle East & Africa)