I haven't exactly been treating the battery in the MBP properly, 62 charge cycles in 5 years & 5 months. I've started using FruitJuice app to maintain/monitor my battery use. Here's what it says about my battery:
I'm currently running maintenance cycle using the app. I'm to discharge it to 20% then reconnect the power until it's topped up, then repeat as instructed by the app's notifications. There's also a daily target for running on battery.