Why doesn't my laptop turn on unless plugged?

Question

Acer Aspire 5100

An Acer Aspire 5100 Laptop with a 15.4" inch display.

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My laptop does not turn on unless plugged in, but once turned on, I can unplug it and it just works fine.

Acer service center said it is with battery, battery was changed but the problem is still there.

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Jerry earick @smltech crwdns2934065:0crwdne2934065:0: 1 · Answer 1 · 2016-05-21T21:22:48-07:00

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First you have to check the battery

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@smltech what about "battery was changed but the problem is still there."this?

crwdns2934271:0Mud 21, 2016crwdnd2934271:0 oldturkey03 crwdne2934271:0