craftsman cmcd700c1 drill gets super hot in the handle after like 5 minutes of use, is that normal?

Diagnosis

No, it is not normal for the handle of the Craftsman V20 CMCD700C1 to become "super hot" within five minutes of use. While a slight warmth in the motor housing (the top part of the tool) is expected during heavy drilling, heat concentrated in the handle typically indicates a high-resistance electrical fault or a catastrophic failure in the power delivery chain. Because the battery terminals and the trigger switch are located in the handle area, heat here suggests that energy is being converted into heat rather than mechanical torque. This usually happens due to "voltage drop" caused by oxidized or contaminated battery contact points. When the connection between the V20 battery pack and the drill's internal rails is poor, the current must "force" its way through the resistance, creating a localized heat zone. Alternatively, if you are driving large fasteners (like 3-inch deck screws) into hardwood, the motor may be drawing maximum current (amps), causing the trigger switch or the internal wiring to overheat. You can confirm this by checking if the heat is centered around the battery interface or the trigger; if the plastic feels soft or smells like ozone/burning, you have a critical electrical failure.

How to Fix It

To resolve electrical resistance and overheating in the handle, follow these precise steps to restore a clean power path:

1. Remove the V20 battery pack and inspect the three metal contact rails on both the battery and the drill's receiver. Look for black carbon buildup, pitting, or a dull grey oxide layer.
2. Use a high-percentage Isopropyl Alcohol (90% or higher) on a cotton swab to wipe down the terminals. If you see stubborn oxidation, use a clean pencil eraser to vigorously scrub the gold-plated contact points until they are shiny.
3. Inspect the battery latch mechanism. If the battery is not seating firmly, it can create a "micro-arcing" effect where the battery vibrates slightly during use, creating intense heat at the contact point. Ensure the latch clicks decisively.
4. If the heat is coming from the trigger, perform a "dry run" without a load. Pull the trigger halfway for 30 seconds. If the handle heats up without the drill actually doing any work, the trigger switch (potentiometer) has failed internally and is shorting.
5. Blow out the motor vents and the handle seams using compressed air at 30 PSI to remove any conductive metallic dust or sawdust that may be causing a partial short across the internal circuitry.

If That Didn't Work

• Replace the V20 Battery Pack: The issue may not be the drill, but a failing cell within the battery. A battery with high internal resistance will heat up during discharge, and that heat transfers directly into the drill handle. Swap in a known-good 2.0Ah or 4.0Ah V20 battery to see if the heat persists.
• Inspect for Trigger Switch Failure: The CMCD700C1 uses a variable speed trigger. If the internal contacts of the switch are pitted or worn, they create a bottleneck for the current. If the handle remains hot despite clean terminals, the trigger assembly must be replaced.
• Check for Motor Windings Short: If you notice a distinct "burnt toast" smell and the heat is radiating from the top of the handle toward the gearbox, the motor armature is likely shorting. Check for excessive sparking (blue/white flashes) through the motor vents while running. If sparks are visible, the motor is failing.
• Verify Load Compatibility: Ensure you are not using the drill for tasks that require a high-torque impact driver. Using a standard drill for heavy-duty driving puts immense strain on the motor and trigger, leading to rapid heat buildup in the handle.

Heads Up

• Battery Protection: Never continue using the tool if the handle is hot to the touch. Excessive heat can trigger the V20 battery's Thermal Protection Circuit (TPC), which may permanently disable the battery pack to prevent a fire.
• Avoid "Trigger Riding": Avoid holding the trigger at a very low speed for long periods while under heavy load. This forces the motor to operate at a low-efficiency point, maximizing heat generation in the handle and switch.
• Storage Warning: Do not store the drill in a hot vehicle or direct sunlight. High ambient temperatures lower the threshold for thermal shutdown and can degrade the plastic housing of the handle.
• Contact Maintenance: Every 3-6 months, wipe the battery terminals with a dry cloth to prevent the buildup of conductive dust that leads to the resistance issues described above.