Batteries are like tiny power boxes! 🔋 They store energy and give it to your toys, remote controls, and other devices when they need it. Inside a battery, there are special chemicals that make electricity when they react together. When the battery is used up, the chemicals can't make electricity anymore.
Rechargeable batteries (accumulators) are special because you can fill them up with energy again, just like filling a water bottle! ⚡
Batteries work by using chemical reactions to create electricity! 🔋 Inside every battery, there are two parts called electrodes (one positive and one negative) and a liquid or paste called an electrolyte. When you connect a battery to a device, the chemicals inside start reacting, and tiny particles called electrons flow from the negative to the positive side, creating an electric current.
Rechargeable batteries (like in phones or cars) can reverse this reaction when you plug them in, so they can be used again and again! 🔄
Batteries convert chemical energy into electrical energy through redox reactions (reduction-oxidation). Inside, there are three main parts:
When a circuit is closed, electrons flow from the anode to the cathode through the wire, powering devices. Meanwhile, ions move through the electrolyte to balance the charge.
Rechargeable batteries (e.g., lithium-ion) use reversible reactions. Charging forces electrons back, resetting the chemicals.