The Lead–acid battery, was invented in 1859 by the French, and is the oldest rechargeable battery in existence. Even with a low energy-to-volume ratio and a very low energy-to-eight ratio the battery still has a fairly large power to-weight ratio giving it the ability to supply high surge currents.

Such features to include low cost make them desired for use in flashlights, electric toys and bicycle and motor vehicles to give the proper current required.

Lead acid batteries is old and inexpensive technology compared with other technologies, but are widely use even if surge is not an issue.

Hospitals, stand-alone power systems. Backup power supplies in cell phone towers are all high-availability settings that use the large-format lead acid design. Because of all the many uses the standard cell may be modified to improve storage times and improve maintenance needs. Today other types of batteries are being used in similar capacities.
Today 40-45% of the Lead-acid batteries sold are done so on the world market.

The lithium-ion battery is a rechargeable battery, its named since the ions move from the cathode to the anode during charging and back when discharging.

Consumer electronics are loaded with Lithium-ion batteries. These batteries have proven to be one of the most popular rechargeable for mobile electronics having one of the best energy densities and no effect on memory. How ever , a slight memory lose when not in use for a while has been detected

The lithium is also in full use by the military in all their portable devises such as vehicle, communications and aerospace.

Lithium-ion batteries are now commonly replacing the lead acid batteries in golf carts and some utility carts.

The goal is to use light weight lithium and its components rather heavy lead plates and electrolyte acid.

With vehicles no modifications are needed to any part of the electrical system when switching to the lithium battery from the lead acid battery.
Cost and safety performance will vary with the LIB series. Most electronic handheld devises use LIBs or lithium cobalt oxide which has a very high energy rating. But their are presents safety concerns mostly where damaged has accrue to the unit.

LLIBs. Under certain conditions can be hazardous. But results show they are still safer, lighter, longer life and when going the distance are over all the best consumer pick over lead acid batteries.