Eric Jones recommends to solder as well. I used a 300 watt iron and 2% silver solder with a low melting point and some mild activated flux.
I tried to only solder the tip and not allow any solder to wick beyond the terminal.
Even though solder has a much higher resistance than copper, after crimping by applying solder it can lower overall resistance. This is especial true if crimp is not perfect.
Y1-02-26