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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Operating Activities:    
Net Income (loss) $ 3,240,737 $ (4,433,046)
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Depreciation and amortization 66,352 101,712
Stock based compensation 4,346 14,324
Amortization of financing costs 14,856 3,333
Non-cash interest expense 984,829 222,648
Amortization of debt discount 1,360,322 1,011,109
Bad debt expense 130 0
Write off Enerplex Patents 0 59,153
Warranty reserve (1,275) (6,345)
Change in fair value of derivatives and loss on extinguishment of liabilities, net (7,006,827) 984,461
Changes in operating assets and liabilities:    
Accounts receivable 109,414 (1,326)
Inventories (17,129) (36,465)
Prepaid expenses and other current assets (47,171) (29,852)
Accounts payable (323,710) 244,975
Related party payable (688) 5,927
Accrued expenses 301,693 258,837
Accrued interest 152,232 105,811
Net cash used in operating activities (1,161,889) (1,494,744)
Investing Activities:    
Patent activity costs (2,131) (6,502)
Net cash used in investing activities (2,131) (6,502)
Financing Activities:    
Proceeds from debt 1,201,768 1,530,000
Repayment of debt 0 (30,261)
Payment of debt financing costs (5,000) 0
Net cash provided by financing activities 1,196,768 1,499,739
Net change in cash and cash equivalents 32,748 (1,507)
Cash and cash equivalents at beginning of period 18,159 89,618
Cash and cash equivalents at end of period 50,907 88,111
Supplemental Cash Flow Information:    
Cash paid for interest 20,741 106,617
Cash paid for income taxes 0 0
Non-Cash Transactions:    
Non-cash conversions of preferred stock and convertible notes to equity 645,977 1,430,000
Non-cash financing costs 10,800 0
Interest converted to principal 171,152 96,120
Initial embedded derivative liabilities 2,229,187 1,151,162
Promissory notes converted to convertible notes $ 235,000 $ 0