Environmental Problems Regarding Electric Lift Truck Batteries
The electric lift truck is normally considered more stable and safe compared to diesel and gas powered IC engines. Both gas and diesel engines pose a fire risk and emit harmful exhaust toxins. The electric forklift is not without is hazards however. They have rechargeable batteries as their source of power, and batteries could present risks to the natural environment as well as to personal safety. There are hazards associated with the disposal, storage, use and manufacture of rechargeable batteries for lift trucks.
Manufacturing
The forklift battery consists of lead plates being placed in a solution of sulfuric acid, that are known as lead-acid rechargeable batteries. Lead is toxic which, when used in manufacturing processes, poses hazards to water quality because of drainage and runoff. When lead enters a water system it can result in various kinds of health problems to living beings and can even be fatal. The sulfuric acid used in lift truck batteries is really harmful to skin and could lead to severe burns. Sulfuric acid also produces noxious fumes that could cause damage to both humans and the natural environment.
Normal Storage and Use
Lead-acid batteries can produce hydrogen gas as a chemical byproduct when recharging. When recharging batteries for a forklift or any other kinds of vehicle, heat, flames, smoking and sparks must be kept well away from the recharging site. The flammable hydrogen can cause an explosion if ignited by heat or flame.
If it touches the bare skin, sulfuric acid in the batteries can cause chemical burns. This is not an issue during normal use of the battery, but if a battery is punctured or damaged, the acid can leak or spray, potentially burning anyone who is nearby.
Disposal
Improper disposal of lead-acid batteries should always be avoided. These batteries must be recycled correctly or reused in new batteries so that the sulfuric acid can either be neutralized or recycled. In order to prevent the serious environmental consequences of improper disposal, all lead-acid batteries sold or purchased in the U.S. include a "core charge" which would only be returned if the used battery is turned in.