Trough battery spaces between the plates (the troughs) were filled with dilute sulfuric acid. So long as the box was not knocked about, there was no risk of electrolyte spillage. Trough battery The trough battery was a variant of Alessandro Volta's Voltaic Pile and was invented by William Cruickshank c. 1800. Volta's battery consisted of brine-soaked pieces of cloth sandwiched between zinc and copper discs, piled in a stack. This resulted in electrolyte leakage as the weight of the discs squeezed the electrolyte out of the cloth. Cruickshank solved this problem by laying the battery on its side in a rectangular box.
Plug-in electric vehicles in Canada be released on the Canadian market by mid-2016. Purchase incentives for new plug-in electric vehicles (PEVs) were established in Ontario consisting of a rebate between (4 kWh battery) to (17 kWh or more) (~ to ), depending on battery size, for purchasing or leasing a new PEV after July 1, 2010. The rebates will be available to the first 10,000 applicants who qualify. The province also introduced green-coloured licence plates for exclusive use of plug-in hybrids and battery electric vehicles. These unique green vehicle plates allow PEV owners to travel in the province's carpool lanes until 2015 regardless of the