Changing a laptop battery requires basic tools like screwdrivers and a new battery matching the model. Reasons for changing a laptop battery include diminishing battery life, damage, or only ...

While the cause of laptop ... battery is not detected. No battery present. If your MacBook can't detect your battery or an X displays over the battery icon, the MacBook might be having trouble ...

the battery will slowly decrease in full capacity meaning you won't get the same power (and therefore length of time you can use the laptop when not plugged in) from a full charge the way you used to.

Next, a custom PCB was made with two Dell DC jacks and an MSP430. This passes power through the board, but uses the MSP430 to send fake data to the computer. The demo shows off a 90 W adapter ...