How does your cell phone battery work?

What is a battery? Batteries are small containers of chemical energy. When a smartphone is plugged into the mains, electricity is used to reset a chemical reaction within the battery, transferring electrons from the negative anode to the cathode – the positive end of the battery.

How does a cell phone battery charge?

Generally lithium ion batteries are charged with a constant current until the cell voltage reaches a specific level, at which point the charge controller switches over to constant voltage charging until the current drawn by the cell decreases to zero.

Should cell phone battery be fully drained before recharge?

It’s better to not fully charge or fully drain your battery. In fact, the stress of high voltages can actually wear your battery down and cause to it to die sooner. Similarly, draining your battery completely also ages it by increasing the total number of “cycles” the battery goes through.

Do cell phone batteries need to be replaced?

Nothing lasts forever — especially not smartphone batteries. Those tiny lithium-ion powerhouses that run your iPhone or Android phone are all consumables, which means they have a limited life span. The longer you hang on to your device, the more your battery will degrade, and eventually, it will have to be replaced.

How does a a battery work?

A battery uses a chemical reaction to create or store electricity by striping electrons from a molecule and depositing them on one conductive metal contact, while leaving the other conductive metal contact with an absence of these molecules and the striped electrons.

What does your smartphone’s battery do?

Just like your heart supplies oxygen-rich blood to the rest of your body, your smartphone’s battery pumps nutritious electrical energy to every part of the device, keeping it healthy and functioning. Say you got a heart transplant at 60.

How do rechargeable batteries work?

Rechargeable batteries (like the kind in your cellphone or in your car) are designed so that electrical energy from an outside source (the charger that you plug into the wall or the dynamo in your car) can be applied to the chemical system, and reverse its operation, restoring the battery’s charge.

What kind of battery does an iPhone use?

Like most modern portable electronic devices, iPhones use lithium-ion (Li-ion) batteries. You can think of a Li-ion battery as a packet of extremely volatile chemicals and metals, separated by super-thin, non-conductive layers, which prevent the electrodes from touching and triggering a potentially explosive thermal reaction.