Does anyone here know the efficiency of new batteries?
If I pump 100W into one battery pack, say from a solar array, how any W are available as output from this battery?
Is this figure effected by the time the charge is stored in the battery? Is temperature a consideration, and does temperature during charge, temperature during storage or temperature during discharge enter into the equation?
Are new batteries more efficient than old lead acid batteries & are they more efficient under all conditions?
My questions are partially the result of climatic conditions here in Canada. My thought is that a battery that handles summer conditions in say Las Vegas might not be optimal in Northern Quebec, and that electric vehicles may not be well suited to regions with:
Short periods of daylight necessitating additional head light usage.
Cold conditions during charging.
Cold conditions during storage.
Cold conditions during driving that necessitate a heated cab.
I'm very much in favor of electric autos, but I recall how lead/acid batteries lost much of their charge during Canadian winters, as well as how short battery life can be during summer desert conditions, when daytime temperatures are regularly >45C.
The need for automotive air conditioning during much of the year in hot climates, as well as the need for cab heating in Canada for much of the year might marginalize their use unless batteries are developed that can either operate over a wide temperature range, or else batteries are developed that are maximised for specific conditions.