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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">UNITED STATES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">SECURITIES AND EXCHANGE COMMISSION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">Washington, D.C. 20549</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>FORM 8-K</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">PURSUANT TO SECTION 13 OR 15(d) OF &nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">OF THE SECURITIES EXCHANGE ACT OF 1934</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Date of Report (Date of earliest event reported):
January 20, 2012</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>ENER1, INC.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Exact Name of Registrant as Specified in Charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 33%; text-align: center; padding-bottom: 1pt; border-bottom: Black 1pt solid">Florida</TD>
    <TD STYLE="width: 34%; text-decoration: none; text-align: center; border-bottom: Black 1pt solid">001-34050</TD>
    <TD STYLE="width: 33%; text-align: center; border-bottom: Black 1pt solid">59-2479377</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">(State or other Jurisdiction of Incorporation)</TD>
    <TD STYLE="text-align: center">(Commission File Number)</TD>
    <TD STYLE="text-align: center">(IRS Employer Identification No.)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">1540 Broadway, Suite 40</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">New York, NY 10036</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Address of Principal Executive Offices) (Zip
Code)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><BR>
(212) 920-3500</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Registrant&rsquo;s Telephone Number, including
Area Code)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">Not Applicable</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Former Name or Former Address, if Changed Since
Last Report)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction
A.2. below):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; font-family: Wingdings">&uml;</TD>
    <TD STYLE="width: 95%">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; font-family: Wingdings">&uml;</TD>
    <TD STYLE="width: 95%; font-family: Times New Roman, Times, Serif">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font-size: 10pt">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; font-family: Wingdings">&uml;</TD>
    <TD STYLE="width: 95%; font-family: Times New Roman, Times, Serif">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240-14d-2(b))</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font-size: 10pt">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; font-family: Wingdings">&uml;</TD>
    <TD STYLE="width: 95%; font-family: Times New Roman, Times, Serif">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240-13e-4(c))</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P>

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<P STYLE="font-size: 10pt; text-align: center; margin: 0"><B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-right: 0; margin-left: 0"><B>Item 1.01&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Entry Into a Material Definitive Agreement.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Ener1, Inc. (the &ldquo;Company&rdquo;), as borrower, Bzinfin
S.A., as agent, certain investment funds managed by Goldman Sachs Asset Management, L.P. and Bzinfin S.A., as lenders (collectively
with the Company and Bzinfin S.A., as agent, the &ldquo;Parties&rdquo;), entered into a Letter Amendment (the &ldquo;Fourth Amendment&rdquo;),
dated January 19, 2012, and effective as of January 20, 2012, amending the terms of the $4,500,000 Loan Agreement (the &ldquo;Loan
Agreement&rdquo;), dated as of November 16, 2011, and described in the Company&rsquo;s Current Report on Form 8-K filed with the
Securities and Exchange Commission (the &ldquo;SEC&rdquo;) on November 22 , 2011 (the &ldquo;11/22/11 Form 8-K&rdquo;), as amended
by a Letter Amendment, dated December 23, 2011, and Amendment No. 2 to Loan Agreement, dated as of December 30, 2011, and a Letter
Amendment, dated January 6, 2012. Pursuant to the Fourth Amendment, the Parties extended the maturity date of the Loan Agreement
from January 20, 2012 to January 27, 2012. The relationships between the Company and the other parties to the Loan Agreement are
described in the 11/22/11 Form 8-K.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">The above description of the Fourth Amendment is not complete and
is qualified in its entirety by the full text of the Fourth Amendment, which is filed as Exhibit 10.1 to this Current Report on
Form 8-K and is incorporated by reference herein.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 9.75pt 1in; text-indent: -1in"><B>Item 9.01&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Financial
Statements and Exhibits</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 9.75pt"><I>(d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Exhibits</I></P>

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    <TD STYLE="width: 3%; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 77%; border-bottom: black 1pt solid; font-weight: bold">Description</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">10.1*</TD>
    <TD>&nbsp;</TD>
    <TD>Letter Amendment, dated January 19, 2012, and effective as of January 20, 2012, by and among Ener1, Inc. and Bzinfin S.A., Liberty Harbor Special Investments, LLC and Goldman Sachs Palmetto State Credit Fund, L.P.</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;* Filed Herewith</P>

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<P STYLE="font-size: 10pt; text-align: center; margin: 0"><B></B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;&nbsp;</P>

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    <TD STYLE="font-family: Times New Roman, Times, Serif">Date: January 23, 2011</TD>
    <TD COLSPAN="2" STYLE="font-family: Times New Roman, Times, Serif; font-weight: bold">Ener1, Inc.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; font-family: Times New Roman, Times, Serif; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 5%; font-family: Times New Roman, Times, Serif; font-weight: bold">&nbsp;</TD>
    <TD STYLE="width: 45%; font-family: Times New Roman, Times, Serif; font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font-family: Times New Roman, Times, Serif">By:</TD>
    <TD STYLE="font-family: Times New Roman, Times, Serif; border-bottom: Black 1pt solid">/s/ Nicholas Brunero</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font-family: Times New Roman, Times, Serif">Name:&nbsp;</TD>
    <TD STYLE="font-family: Times New Roman, Times, Serif">Nicholas Brunero</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-family: Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="font-family: Times New Roman, Times, Serif">Title:</TD>
    <TD STYLE="font-family: Times New Roman, Times, Serif">Interim President and General Counsel</TD></TR>
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
PURSUANT TO SECTION 13 OR 15(d) OF
OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported):
January 20, 2012
ENER1, INC.
(Exact Name of Registrant as Specified in Charter)
Florida
001-34050
59-2479377
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
1540 Broadway, Suite 40
New York, NY 10036
(Address of Principal Executive Offices) (Zip
Code)
(212) 920-3500
(Registrant's Telephone Number, including
Area Code)
Not Applicable
(Former Name or Former Address, if Changed Since
Last Report)
Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction
A.2. below):
¨
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240-14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240-13e-4(c))
Item 1.01      Entry Into a Material Definitive Agreement.
Ener1, Inc. (the "Company"), as borrower, Bzinfin
S.A., as agent, certain investment funds managed by Goldman Sachs Asset Management, L.P. and Bzinfin S.A., as lenders (collectively
with the Company and Bzinfin S.A., as agent, the "Parties"), entered into a Letter Amendment (the "Fourth Amendment"),
dated January 19, 2012, and effective as of January 20, 2012, amending the terms of the $4,500,000 Loan Agreement (the "Loan
Agreement"), dated as of November 16, 2011, and described in the Company's Current Report on Form 8-K filed with the
Securities and Exchange Commission (the "SEC") on November 22 , 2011 (the "11/22/11 Form 8-K"), as amended
by a Letter Amendment, dated December 23, 2011, and Amendment No. 2 to Loan Agreement, dated as of December 30, 2011, and a Letter
Amendment, dated January 6, 2012. Pursuant to the Fourth Amendment, the Parties extended the maturity date of the Loan Agreement
from January 20, 2012 to January 27, 2012. The relationships between the Company and the other parties to the Loan Agreement are
described in the 11/22/11 Form 8-K.
The above description of the Fourth Amendment is not complete and
is qualified in its entirety by the full text of the Fourth Amendment, which is filed as Exhibit 10.1 to this Current Report on
Form 8-K and is incorporated by reference herein.
Item 9.01      Financial
Statements and Exhibits
(d)     Exhibits
Exhibit No.
Description
10.1*
Letter Amendment, dated January 19, 2012, and effective as of January 20, 2012, by and among Ener1, Inc. and Bzinfin S.A., Liberty Harbor Special Investments, LLC and Goldman Sachs Palmetto State Credit Fund, L.P.
* Filed Herewith
- 2 -
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Date: January 23, 2011
Ener1, Inc.
By:
/s/ Nicholas Brunero
Name:
Nicholas Brunero
Title:
Interim President and General Counsel
- 3 -