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Prepaid Expenses and Other Current Assets, Net (Details) - Schedule of prepaid expenses and other current assets - USD ($)
 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Schedule of prepaid expenses and other current assets [Abstract]    
Prepaid IPO related expense [1] $ 759,365
Receivable from disposal of property and equipment 342,023
Prepaid rental fee 67,937 65,439
Receivable from disposal of a production line [2] 14,394 1,056,400
Loans to third parties 198,333
Others 67,924 86,245
Less: allowance for doubtful accounts (14,394)
Prepaid expenses and other current assets $ 1,237,249 $ 1,406,417
[1] The balance represented prepaid professional fee for initial public offering (“IPO”), which will be deducted from the proceeds of IPO upon the completion of IPO, which was completed on January 28, 2021 (see Note 19).
[2] The balance represented the receivable from the disposal of the production line of battery cells, which mainly consisted of the consideration receivable of $738,284 and the technical consulting fee receivable of $318,116. The Company collected $1,042,006 for the year ended September 30, 2020 and the remaining $14,394 was considered as allowance for doubtful accounts as of September 30, 2020. The Company recorded allowance for doubtful accounts of $nil, $nil and $14,533 for the years ended September 30, 2018, 2019 and 2020, respectively.