The Quick Charge Soldering Iron Kit is the world’s #1 rechargeable soldering iron kit designed with the professional in mind. The 7700 cordless soldering iron kit is our basic unit and the biggest seller for a good reason. We like to think of it as the “crank up window” of our soldering irons. It’s dependable, bullet proof and has an easy battery charge. It doesn’t have all the bells and whistles our other models feature, but it gets the job done and done well. The 7700 soldering iron kit fully recharges in 4 hours and outputs 125 solder joints per charge.