Exhibit 23.3
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Axion Power International, Inc.
3601 Clover Lane
New Castle, PA 16195
We herebyconsenttothe incorporation by reference of our report dated March 31, 2014, except for the effects of the reverse stock split described in Note 12, as to which the date is September 8, 2014,inthis Registration Statement on Form S-1 relatingtotheconsolidatedbalancesheetof Axion Power International, Inc., asof December 31, 2013, and the related consolidatedstatementsofoperations and comprehensive loss, stockholders' equity (deficit), and cash flows for the year then ended. Ourreport contains an explanatory paragraphregarding theCompany'sability to continue asagoingconcern.Wealsoconsenttothereferenceto usunderthecaption “Experts”in such Registration Statement.
/s/ EFP Rotenberg, LLP
EFP Rotenberg, LLP
Rochester, New York
January 29, 2016