During recycling, battery cases are broken into small pieces. When multi-colored pieces are melted together, the resulting plastic is black. Lead-acid batteries power the country s electric fork and scissor lift trucks, golf cars, mining vehicles, street sweepers, mail delivery vehicles and indoor and outdoor passenger shuttles. Batteries are on the water, too, powering navigational signals, backing up critical systems in submarines, starting engines and powering electrical devices in boats. Lead industrial batteries back up wired and wireless telephones and computer systems during power outages.
Batteries are the reason why the phones stay on when the power is out.
And during blackouts or brownouts, the lead batteries in the UPS system back up computers, keeping them from losing data.