I have noticed that, some users asked that, there old cameras always display low power warning for full charged new batteries, or there will be a low power warning after only taking 5-6 pictures.

CANON POWERSHOT A75 Battery

If you have met this question (I wish not), I’d like to share the solutions.

Li-ion ANON POWERSHOT A5 Battery

CANON POWERSHOT A5 Battery

The this problem are so common for Canon PowerShot A series cameras when you try to powered your camera by Ni-MH batteries. This is because that, the camera judge the battery is power off by voltage of the battery. And if you use Ni-MH batteries for your camera, the Ni-MH batteries’ voltage is lower than the Li-ion ones and close to the camera’s judge voltage of low power, so the camera will warn you to change a new battery.

CANON PowerShot A80 Battery

So if you use a Li-ion batteries this questions will be solved simply.