LED Lights, batteries, electric cars and anything involving electronics such as computers, phones, tablets and TVs all use DC power (DC stands for Direct Current). Other devices like electric motors or heating elements used in appliances may use AC power today, but there are equivalent such products that can operate on DC power.
AC or Alternating Current became a standard in the early days of electricity because at that time, it was easier to increase or decrease voltage using a transformer. This was an important point in long distance power transmission.
Today, the number of devices using DC power continues to grow as does the adoption of renewable energies like photovoltaic (PV) solar and battery storage, which are also DC.