Is it time to replace my battery?

I have a 17" Mid 2010 MacBook Pro 6,1. A couple of months ago I substituted the optical drive with a 1TB SSHD; dual drive upgrade. I remember reading somewhere this upgrade can do wacky things to your battery, drain the battery , decrease its performance. Well, now I am getting a "Service Battery" message.

Also, is my cycle count "correct"? Shouldn't my cycle count be a lot higher, in order to replace the battery? Never replaced the batttery before. Is it just time for a new battery? What model number battery should I order, do I just specify Mid 2010?

Here are my specs:

Battery Information:

Model Information:

Serial Number: 9G******N5A

Manufacturer: DP

Device Name: bq20z951

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 301

Hardware Revision: 1

Cell Revision: 119

Charge Information:

Charge Remaining (mAh): 6883

Fully Charged: Yes

Charging: No

Full Charge Capacity (mAh): 6883

Health Information:

Cycle Count: 52

Condition: Service Battery

Battery Installed: Yes

Amperage (mA): 0

Voltage (mV): 8259

-Thanks!

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