Some other battery tips
Always give your battery a cool down period, at least 15 minutes, longer is better. Battery’s need to cool after a change before you use them. AND need to cool after you use them before you change them.
Some battery manufacturers inflate the C rating, they will say 25-35 C. Always use the lower number, that is the continuous use C, the higher number is a burst rate. What you can pull for a short burst, say 15 seconds.
There is little to no correlation between price and quality. I buy Turnergy, Gray Hobby, and Gene Ace, all have given my 3-4 years of service. My buddies buy expensive batteries, that will only last one season. I’m not saying these are the only good batteries. Just these has worked for me.
Time is the enmity, no Lipo will last forever, they will degrade just sitting unused on the shelf.