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Step 1: Triangle File

Purchase a small triangle file $1 fr hardware store

Step 2: Check Fit

Compare if fits snugly into the triangle screw head

Step 3: Remove Screw

Unscrew normally. Can use a plier to increase the torque as it can be quite tight

Step 4: Repair Battery

Refer to another Instructables for changing out the defective cell inside the battery pack.
www.instructables.com/id/iRobot-Dead-Battery-Cell-Fix/

About This Instructable

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Bio: Engineer at heart n DIY enthusiast
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