Ballast resistor

Film resistor

Printed resistor

Integrated resistor

No need for check and top up distilled water

No need for recharging of battery

No chance for sulphation of battery terminals

No need for disconnect the terminals to

Ampere - hour rating

Voltage - hour rating

Ampere rating

Voltage rating

Arsenic and boron

Gallium and indium

Germanium and silicon

Aluminium and antimony