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.
1) n. a person who testifies under oath in a trial (or a deposition which may be used in a trial if the witness is not available) with first-hand or expert evidence useful in a lawsuit. A party to the lawsuit (plaintiff or defendant) may be a witness. 2) a person who sees an event.