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.
Freebase(0.00 / 0 votes)Rate this definition: Witness. A witness is someone who has, who claims to have, or is thought, by someone with authority to compel testimony, to have knowledge relevant to an event or other matter of interest.