Internal Power Supplies
Portable game platforms originally made use of external power supplies (AA batteries, etc.) for a long period of time, in order to provide power to them. It was not until the Nintendo DS that portable game platforms began to make use of internal re-chargeable batteries via the use of a power cable. Said cables take power from standard outlets and send it to the battery to be recharged; eliminating the need to replace the battery.
Other platforms that use internal power supplies are as follows:
- Desktop PCs / Laptops
- Consoles (PS4, Xbox One, Nintendo Switch, etc.)
External Power Supplies
When portable game platforms were a newer technology, they made use of external power sources. Examples of these would be non-chargeable batteries that had to be placed into the device and then replaced when depleted.