Lead-acid batteries: The accumulator, or lead battery, also known as a lead-acid battery, is a type of battery (a wet-cell battery)

that is very common in conventional vehicles as a starter battery, although it is also used as a traction battery in electric vehicles. It usually supplies a voltage of 6 V, 12 V or another multiple of 2, since each cell delivers 2 V. These batteries can supply relatively high currents, which makes them ideal for starter motors.

Although its best-known use and form is the car battery, this type of accumulator has many other applications.

Sealed AGM batteries: Lead/AGM batteries (AGM stands for Absorbent Glass Mat) are made using absorbent fibreglass matting, so that when the battery is assembled and the liquid electrolyte is added, it is soaked up by the AGM fibre matting, which acts like a sponge.

GEL batteries: Gel batteries take their name from the gel cells that power the battery. These cells are filled with a mixture of sulphur and silica that immobilises the electrolyte.

Gel batteries are quite similar to absorbent glass mat batteries. Both types are deep-cycle batteries, which means they should be recharged before their charge drops below 50 per cent. Silica gel batteries use an additive that increases the stiffness of the gel. These batteries are more sensitive to overcharging. Gel batteries should always be removed from their charger as soon as they reach 100 per cent.

Lithium batteries: The lithium-ion battery, also known as a Li-Ion battery, is a device designed for storing electrical energy that uses a lithium salt as its electrolyte to supply the ions needed for the reversible electrochemical reaction that takes place between the cathode and the anode.