Battery life left: Bad

[Jaggs]

can any one tell me what exactly its mean. when i use samsung Diagnostic tool its shows.

Battery life left: Bad

do i need to worry?

[Hasan001]

j7 Prime

[admin_]

"Thank you for Joining Samsung community. We would recommend taking some troubleshooting steps to further isolate what you may be experiencing.
Find troubleshooting steps on provided link http://www.samsung.com/in/support/skp/faq/1101689. Please let the community know what steps you have taken and if you have noticed any changes or improvements. This will help the Community to provide you steps without repeating any steps you may have already taken. Be sure to hit ♡ when you find an answer that works for you."

[himagupta]

is the problem because the same is appearing on my phone