Amazing guide, thanks so much!
I didn’t go through all the steps. I just removed the trackpad cable, used a tiny amount of the solvent and some thin nylon cord to tease off the battery units. For the two central units, I used the provided plastic cards. Everything works perfectly.
The glue used in my laptop was extremely strong and it took a long time to detach the battery, as well as removing the remaining tape and glue from the case. I wanted to be extra careful so as to avoid solvent spilling to unwanted areas. The whole thing took around 1,5 hrs in total.
Heads up: I almost destroyed the cable, mistakenly pulling the connector upwards. In stead it needs to be pulled towards the back of the laptop body. The photos do show this, but I didn’t pay enough attention!