PART# ED0008IS iso-tip w/ Lithium battery rechargeable cordless soldering iron MODEL#8000 iso-tip with Lithium battery the PART# ED0008SE Power Pro Advanced. The PART# ED0008SE keeps the classic design of the Model 7700, but in a dark blue case. It also features a charge indicator light, removable cord from the charging base, and an updated battery. Our new iron features a LiFePO4 (lithium iron phosphate) battery that replaces the NiCd battery. As you may know, cadmium is a toxic metal, and needs to be specially disposed of to avoid leaking toxins into the ground. We decided to switch to a lithium-based battery in order to both be more environmentally friendly, and to stay ahead of possible future environmental regulation. A LiFePO4 battery was chosen specially because of its long-life span (twice the cycles of a Li-Ion battery) and high level of safety. This kit includes the Power Pro Advanced soldering iron, recharging stand, LiFePO4 battery, high efficiency fine tip #7545-100, high efficiency chisel tip #7577-100, instructions, and a one-year limited warranty. •Fully recharges in 3 to 3.5 hours •Partially charged battery to full capacity in 1 to 2 hours •Up to 150 solder joints per charge during continuous use •Charge indicator light to show when iron is fully charged power pro advanced iso-tip