does an older phone battery (less capacity) charge faster than a new phone with brand new battery? and if it’s using a portable battery, will it use less of that portable batteries “juice” to charge than a new phone?

Question

and if it’s using a portable battery, will it use less of that portable batteries “juice” to charge than a new phone?

In: Technology

Answer 1

Speed of charge, and total capacity can be very unrelated traits of a battery.

With advances in technology, not only are newer batteries capable of holding more electrical charge in the same physical form factor, but they also are capable of drawing more current without overheating, allowing them to recharge faster than previous iterations.

So, while an older battery might have less capacity, it may take the same amount of time, or in some cases even more time to fully accept the charge required to bring it to capacity, because it doesn’t draw as much current from the charger.

Think of a battery as a bucket, and the amount of current it can handle as a hose filling the bucket. With new batteries, the bucket might be the same size, but it has a much wider hose so you can dump more water into the bucket per second and fill it up faster. With an old battery, even if the bucket were physically smaller the hose is very narrow and would take a long time to get enough water inside to fill it up.