I highly recommend AGAINST doing it that way. NOT a permanent solution and is far more prone to failure. Also, nobody should ever be trying to solder directly to a battery 
That's one of the only things I still remember about soldering back in school. Never solder anything onto a battery, as it might explode

Thankfully, I'm not a total r-tard. Yes, I prefer soldering the battery in, but not soldering THE battery

And yeah, using tape is not reliable, tape will lose it's strength over the years and so the battery WILL lose connection, unlike soldering, which is 'permanent'
