The cost of the battery is only ~10-20% higher than the bill of materials â suggesting a potential long-term competitive price for Lithium Ion batteries could approach ~$100 per kWh. Tesla currently pays Panasonic $180/kW for their batteries, although conventional systems still selling for $500-700/kWh.he cost of the battery is only ~10-20% higher than the bill of materials â suggesting a potential long-term competitive price for lithium-ion batteries could approach ~$100 per kWh.
n, pl -nies. 1. a declaration of truth or fact. 2. (Law) law evidence given by a witness, esp orally in court under oath or affirmation. 3. evidence testifying to something: her success was a testimony to her good luck.
Legal Definition of witness. 1  1 : to furnish evidence or proof of. 2  2 : to act as witness of: as a : to see the execution of (an instrument) and sign for the purpose of establishing authenticity witness a will b : to be formally present as a witness of (as a transaction or the execution of a convict)