He also made contributions to the development of rechargeable sodium batteries that operate at moderately elevated temperatures, and to the improved understanding of the chemistry, performance and safety of several lithium primary batteries.
42.
As of 2011 zinc-carbon batteries accounted for 20 % of all portable batteries in the UK, and 18 % in the EU . In Japan they account for 6 % of primary battery sales.
43.
"Human-powered equipment " consists of electrical appliances which can be powered by electricity generated by human muscle power as an alternative to conventional sources of electricity such as primary batteries and the power grid.
44.
Ultimately, nine 381 mm guns in three triple turrets were adopted as the primary battery for the ships, on a displacement in excess of, despite the fact that this violated the established naval treaties.
45.
Primary batteries are useful where long periods of storage are required; a primary battery can be constructed to have a lower self-discharge rate than a rechargeable battery, so all its capacity is available for useful purposes.
46.
In Japan as of 2011, 28 % of alkaline primary batteries sold were AAA . In Switzerland as of 2008, AAA batteries totaled 30 % of primary battery sales and 32 % of secondary battery sales.
47.
A Glaser-Dirks DG-500 ( DG 505M ) motorized glider was modified to remove all engine and related equipment and the space used for storage of liquid oxygen and a large supply of Li-SO 2 primary batteries.
48.
Primary batteries are useful where long periods of storage are required; a primary battery can be constructed to have a lower self-discharge rate than a rechargeable battery, so all its capacity is available for useful purposes.
49.
In Japan as of 2011, 28 % of alkaline primary batteries sold were AAA . In Switzerland as of 2008, AAA batteries totaled 30 % of primary battery sales and 32 % of secondary battery sales.
50.
Due mainly to new power-hungry portable devices which cannot be economically powered by primary batteries and come with integral rechargeable batteries, the secondary battery industry has high growth and has slowly been replacing the primary battery in high end products.
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