2x BAT618 18V Li-ion 8.0Ah Battery. Battery Type: Li-ion battery. Do not put battery into water and fire. GSR18VE-2-LI, GSR18V-LI, GSR18V-ECTE, GSR18-2-LI, GSR 18V-EC, GSR 18V-60 FCC, GSR 18-2-LI, GSR 18 VE-2-LI, GSR 18 V-LI.
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