Terrible battery after 2 years

I've had my macbook pro for about 2 years, and for the past few months the battery has been completely useless. It gives me approximately 10 minutes of life before shutting down when not plugged in. Even when it is plugged in, it often will go into sleep mode when I'm in the middle of using it.
The info about the battery is:
Model Information:
Serial Number: Sony-ASMB012-38d0-762b
Manufacturer: Sony
Device name: ASMB012
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0110
Hardware Revision: 0500
Cell Revision: 0303
Charge Information:
Charge remaining (mAh): 628
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 648
Health Information:
Cycle count: 187
Condition: Check Battery
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 12416
I'm unsure about what these numbers mean, but I'm assuming they're not good. Is my next step to buy a new battery? Will they replace it for free? Also, I'm wondering what steps I can take on a new battery in order to ensure it lasts.
Thank you

It's bad for the battery to have it plugged in ALL the time. 90-95% of the time is fine, as long as it gets regular light exercise. Leaving it plugged in for three months and then using it on battery power for several days with overnight recharges is not regular light exercise. Using it on battery power for an hour or two every day or two is ideal. If you average a cycle or two per week, that's enough to keep the juices flowing. Seven or more cycles per week is very heavy battery use and will shorten the lifespan of the battery, but not as rapidly as cycling it less than once a month.
Your 187 cycles in about two years should have been pretty easy on your battery, unless it wasn't used on battery power for weeks or months at a time and then was cycled very often for a while. Regular use is the key.
The other thing that can drastically shorten the life of a lithium-based battery is heat. Leaving your computer to bake all day in a parked car in the summer sun just once can seriously damage the battery, and anything else that raises the battery's temperature above a normal operating range can have the same effect.
Message was edited by: eww

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