Help please. I don't understand.

So I bought an aftermarket battery.

It ran well and charged twice in a week.

Then I removed the infinity lme, installed 6.61 ofw and then ark 4.

The day after, it won't boot off the battery anymore.

When I plug in the charger, the orange light glows for 5 minutes and then stops.

If I boot off charger, it always asks for date and time.

And when. I'm in home screen, the battery icon appears and disappears constantly.

Most times, when I unplugged, psp shuts off. But sometimes, when I unplug, the psp runs off battery for a few seconds before shutting off.