MBP Battery died

Hello, I wondered if anyone could shed any light on an issue that has arisen today with my 2015 MBP.

Suddenly the laptop will only stay on if connected to mains. The battery says it’s at 86% but also says “Replace Now”. If the mains is connected the machine works fine, but light on the charger is orange. If the mains is the disconnected, the machine immediately shuts off.

I’ve tried a SMC reset with no joy.

I bought this just over 3 years ago, which seems a bit premature for the battery to have died on me.

I have managed to get a Genius Bar appointment for next week, is there anything else I can try in the meantime and, if not, how much am I likely to have to shell out for a new battery to be fitted?

Diagnostic info below:

Model Information:

 Serial Number: D866362W4BCFY5HD3

 Manufacturer: SMP

 Device Name: bq20z451

 Pack Lot Code: 0

 PCB Lot Code: 0

 Firmware Version: 702

 Hardware Revision: 1

 Cell Revision: 3217

 Charge Information:

 Charge Remaining (mAh): 1195

 Fully Charged: No

 Charging: No

 Full Charge Capacity (mAh): 1464

 Health Information:

 Cycle Count: 176

 Condition: Replace Now

 Battery Installed: Yes

 Amperage (mA): 0

 Voltage (mV): 8739

System Power Settings:

 AC Power:

 System Sleep Timer (Minutes): 1

 Disk Sleep Timer (Minutes): 10

 Display Sleep Timer (Minutes): 10

 Wake on AC Change: No

 Wake on Clamshell Open: Yes

 Wake on LAN: Yes

 AutoPowerOff Delay: 28800

 AutoPowerOff Enabled: 1

 Current Power Source: Yes

 DarkWakeBackgroundTasks: 1

 Display Sleep Uses Dim: Yes

 GPUSwitch: 2

 Hibernate Mode: 3

 PrioritizeNetworkReachabilityOverSleep: 0

 Standby Delay: 10800

 Standby Enabled: 1

 TCPKeepAlivePref: 1

 Battery Power:

 System Sleep Timer (Minutes): 1

 Disk Sleep Timer (Minutes): 10

 Display Sleep Timer (Minutes): 2

 Wake on AC Change: No

 Wake on Clamshell Open: Yes

 AutoPowerOff Delay: 28800

 AutoPowerOff Enabled: 1

 DarkWakeBackgroundTasks: 0

 Display Sleep Uses Dim: Yes

 GPUSwitch: 2

 Hibernate Mode: 3

 Reduce Brightness: Yes

 Standby Delay: 10800

 Standby Enabled: 1

 TCPKeepAlivePref: 1

Hardware Configuration:

 UPS Installed: No

AC Charger Information:

 Connected: Yes

 ID: 0x0921

 Wattage (W): 60

 Family: 0x0085

 Serial Number: 0x014160f3

 Charging: No

Appreciate any insight anyone can offer!

Thanks in advance