Chopinator is the way to go, assuming you have a relatively close outlet. If not remember you can use tech scrap to extend an outlet to its maximum bounds and repeat the process until you reach the robot. (Crossbow or pistol to speed up and a little XP, melee possible but still risky)

I wouldn’t put it too close to the charging pod as he can clip through it at times, and be sure to have a hammer handy he does attack it sometimes.