Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

v3.19.1
Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]  
Schedule of computation of potentially dilutive securities
The following shares underlying outstanding convertible notes, stock options, RSUs and warrants to purchase common stock were antidilutive due to a net loss in the periods presented and, therefore, were excluded from the dilutive securities computation for the three months ended March 31, as indicated below.
 
Three months ended March 31,
Excluded potentially dilutive securities (1):
2019
 
2018
 
 
 
 
Convertible note - principal

 
702,247

Options to purchase common stock
3,440,437

 
561,536

Unvested restricted stock units
244,785

 
63,600

Financing warrants to purchase common stock
2,444,328

 
2,340,828

Total potential dilutive securities
6,129,550

 
3,668,211

(1)
The number of shares is based on the maximum number of shares issuable on exercise or conversion of the related securities as of the period end. Such amounts have not been adjusted for the treasury stock method or weighted average outstanding calculations as required if the securities were dilutive.
Schedule of concentration of credit risk
Revenues from the following customers each represented at least 10% of total revenue for the three months ended March 31, 2019 and 2018, respectively. They also represented a significant portion of our accounts receivable as of March 31, 2019 and December 31, 2018, respectively.
 
Revenue
 
Accounts Receivable
 
Three months ended March 31,
 
March 31,
2019
 
December 31,
2018
 
2019
 
2018
 
 
 
 
 
 
 
 
 
 
Clarios (successor of Johnson Controls Battery Group, Inc.)
60
%
 
79
%
 
60
%
 
95
%
Ocean Partners USA, Inc.
%
 
18
%
 
%
 
%
P. Kay Metals
37
%
 
%
 
37
%
 
%