Help plzz this is a important test plz be for real plz
Lithium-ion batteries, which are used in many handheld electronic devices, are almost twice as expensive to manufacture as nickel-based rechargeable batteries. They also have a relatively short shelf life, breaking down within two or three years even if they are unused. Over time, they are less able to hold a charge. As many cell phone users have noticed, too, lithium-ion batteries take a long time to recharge, sometimes several hours. The highly unstable lithium atom also puts the batteries at risk of overheating.
What is the main idea of the passage?
A. Lithium-ion batteries have many limitations.
B. Lithium-ion batteries are very slow to recharge.
C. Lithium-ion batteries are more harmful than helpful.
D. Lithium-ion batteries power many electronic devices.
