blade chroma

Hello there, long time no post! I was wondering if this battery I have been using for the past 3-4 years is still safe to use. Attaching some photos, don't remember if it was this "bloated" when I bought it or what is really considered safe for Chroma batteries.

I am not sure if this is the correct forum to be posting this on because I am new, but I'll give it a shot. About a week ago I got a Blade Chroma from a local hobby shop because the owner of it got tired of it flying away from him and crashing. Now I am in the process of getting it to work...

So I was wondering if anyone else has tried this. Replacing the Yuneec receiver with the receiver that is in the Blade Chroma Spektrum BNF. I traced the wires out and was able to get it installed. I am using the DX6 and so far it seems to function just like the Chroma. Im not using the camera at...