🔧 F-150 - Battery Replacement

You’ll remove the old 12V battery from the engine bay and install a new one with the correct size and power rating. This fixes slow cranking, random electrical glitches, and no-start issues caused by a weak or failing battery.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Keep sparks/flames away; batteries can release explosive gas.
• ⚠️ Wear eye protection; battery acid can burn skin/eyes.
• Disconnect negative (-) first and reconnect negative (-) last to reduce short-circuit risk.
• Do not let a tool touch the battery positive (+) and any metal body part at the same time.
• Battery disconnect is recommended; you may lose radio presets/clock.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• 8mm socket
• 13mm socket
• 3/8" drive ratchet
• 6" socket extension
• Battery terminal brush (specialty)
• Battery carrying strap (specialty)
• Torque wrench (inch-pound)
• Shop towels

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 12V battery (Group 65, high-CCA) - Qty: 1
• Battery terminal anti-corrosion spray - Qty: 1
• Dielectric grease - Qty: 1
• Battery terminal felt washers - Qty: 2

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📋 Before You Begin

• Park on level ground, shift to P, set the parking brake, and turn the ignition fully off.
• Open the hood and let the engine bay cool if it’s hot.
• Have your new battery ready nearby (it’s heavy).
• Tip: Take a quick photo of terminals first.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Locate the battery and identify terminals

• The battery is in the engine bay. Identify negative (-) (usually black cable) and positive (+) (usually red cover/cable).
• Use safety glasses and nitrile gloves.

Step 2: Disconnect the negative (-) cable

• Use an 8mm socket with a 3/8" ratchet to loosen the negative terminal clamp nut.
• Wiggle and lift the clamp off the battery post, then tuck it aside so it can’t spring back.

Step 3: Disconnect the positive (+) cable

• Use an 8mm socket with a 3/8" ratchet to loosen the positive terminal clamp nut.
• Remove the clamp from the post and move it safely aside so it cannot touch metal.

Step 4: Remove the battery hold-down

• Use a 13mm socket, 6" socket extension, and 3/8" ratchet to remove the battery hold-down bolt/bracket at the base of the battery.
• Set the hold-down parts aside in a small pile so nothing gets lost.

Step 5: Lift out the old battery

• Install a battery carrying strap (specialty); it’s a handle strap made to safely lift heavy batteries.
• Lift the battery straight up and out, keeping it upright.

Step 6: Clean the battery tray and terminals

• Wipe the tray with shop towels. Remove any loose dirt/corrosion.
• Use a battery terminal brush (specialty) to clean the inside of the cable clamps until the metal looks bright. (This brush is a small wire brush made for battery terminals.)

Step 7: Install the new battery

• Set the new battery into the tray in the same orientation as the old one.
• Reinstall the hold-down bracket/bolt using the 13mm socket, 6" socket extension, and 3/8" ratchet.
• Use a torque wrench (inch-pound): Torque to 80 lb-in (9 Nm).

Step 8: Reconnect the positive (+) cable first

• Slide the positive clamp fully down onto the battery post.
• Use an 8mm socket with a 3/8" ratchet to tighten the clamp.
• Use a torque wrench (inch-pound): Torque to 44 lb-in (5 Nm).
• Install battery terminal felt washers if you’re using them, then apply a light coat of dielectric grease and battery terminal anti-corrosion spray.

Step 9: Reconnect the negative (-) cable last

• Slide the negative clamp fully down onto the battery post.
• Use an 8mm socket with a 3/8" ratchet to tighten the clamp.
• Use a torque wrench (inch-pound): Torque to 44 lb-in (5 Nm).

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✅ After Repair

• Start your F-150 and confirm it cranks strong and starts normally.
• Check that headlights, interior lights, power windows, and locks work.
• Set the clock and radio presets if they reset.
• Look at both terminals: they should not rotate by hand.
• Tip: Recheck clamp tightness after 2-3 days.

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💰 DIY vs Shop Cost

Shop Cost: $220-$400 (parts + labor)

DIY Cost: $160-$280 (parts only)

You Save: $60-$120 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.