Acer Aspire R7 cannot start when taken battery

My R7 works ok then remove the battery and plug in the power cable.

R7 power led on, black screen (no post screen) which only plugged in and NO battery power cable.

R7 power led on, black screen (no post screen) when the battery plugged alone and power cable.

R7 works fine when plugged in NO battery cable and power.

Question:

1 is dead battery only, I need to buy a battery and everything will be ok (technician Acer said, but he didn't have a good battery to test and prove)?

2. is some out of component on the motherboard, as the module power management?

I'm afraid that I buy a battery and the problem still there?

Who can help me!

If it was me, I suspect the battery enough to buy one. I think that if it was hardware power management, it would not work to power either.

Tags: Acer Laptops

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