🔧 F-150 - Battery Replacement

Replacing the battery on your F-150 is a beginner-friendly job. You’ll remove the old 12-volt battery, clean the cable ends if needed, install the new battery, and reset the truck’s battery monitoring system so charging works correctly.

Difficulty Level: Beginner | Estimated Time: 30-60 minutes

---

⚠️ Safety & Precautions

• ⚠️ Wear safety glasses and gloves. Car batteries can leak acid and make sparks if handled incorrectly.
• ⚠️ Always remove the negative cable first and install it last. This lowers the chance of an accidental short circuit.
• ⚠️ Do not touch a wrench between the positive terminal and any metal body part.
• ⚠️ Keep the battery upright. It is heavy and can spill if damaged.
• ⚠️ Battery disconnect is required for this repair.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 8mm socket
• 3/8-inch ratchet
• 6-inch extension
• Battery terminal puller (specialty)
• Battery terminal cleaning brush
• Battery lifting strap
• Torque wrench rated in Nm
• Memory saver 12V OBD-II tool (specialty)
• Nitrile gloves
• Safety glasses

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 12V AGM battery, Group Size H6/48 or matched replacement - Qty: 1
• Battery terminal protector spray - Qty: 1
• Battery terminal anti-corrosion washers - Qty: 2

---

📋 Before You Begin

• 🅿️ Park your F-150 on level ground, shift to Park, and set the parking brake.
• 🔌 Turn off the ignition, lights, blower motor, radio, and all accessories.
• ⏱️ Open the driver door, then wait at least 5 minutes so modules can go to sleep.
• 💾 A memory saver is optional. A memory saver is a small device that keeps basic settings powered while the battery is disconnected.
• 📍 The battery is under the hood on the passenger side near the front of the engine bay.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the hood and inspect the battery

• Use your hands to release the hood latch and raise the hood fully.
• Look at the battery case. If it is swollen, cracked, leaking, or smells like rotten eggs, stop and have it handled professionally.
• Use safety glasses and nitrile gloves before touching the battery cables.

Step 2: Connect the memory saver if using one

• Use the memory saver 12V OBD-II tool and plug it into the OBD-II port under the driver side dash.
• Make sure the memory saver is powered before disconnecting the battery.
• Optional, but helps save settings.

Step 3: Remove the negative battery cable

• Use a 10mm socket, 6-inch extension, and 3/8-inch ratchet to loosen the negative terminal clamp nut.
• The negative terminal is marked with a minus sign, -, and usually has a black cable.
• Lift the negative cable off the battery post. If stuck, use the battery terminal puller.
• Move the cable away from the battery so it cannot spring back and touch the post.
• Negative off first, always.

Step 4: Remove the positive battery cable

• Use a 10mm socket and 3/8-inch ratchet to loosen the positive terminal clamp nut.
• The positive terminal is marked with a plus sign, +, and usually has a red cover or red cable.
• Lift the positive cable off the battery post. If stuck, use the battery terminal puller.
• Keep the positive cable from touching metal parts.

Step 5: Remove the battery hold-down

• Use an 8mm socket, 6-inch extension, and 3/8-inch ratchet to remove the battery hold-down bolt and clamp at the base of the battery.
• A hold-down is the bracket that keeps the battery from moving while driving.
• Set the hold-down clamp and bolt aside where they will not fall into the engine bay.

Step 6: Remove the old battery

• Use a battery lifting strap or both hands to lift the battery straight up and out.
• Keep your back straight. The battery is heavy.
• Place the old battery upright on cardboard or a plastic tray.

Step 7: Clean the battery tray and cable ends

• Use the battery terminal cleaning brush to clean the inside of both cable clamps.
• Use the battery terminal cleaning brush to clean any white or green corrosion from the cable ends.
• If the tray has loose dirt, wipe it with a clean rag while wearing nitrile gloves.

Step 8: Install the new battery

• Use a battery lifting strap to lower the new battery into the tray.
• Make sure the positive and negative posts are facing the same direction as the old battery.
• Confirm the battery sits flat in the tray.

Step 9: Reinstall the battery hold-down

• Use the 8mm socket, 6-inch extension, and torque wrench to install the hold-down clamp and bolt.
• Tighten the hold-down until the battery does not move.
• Torque to 7 Nm (62 in-lbs)
• Do not overtighten. The battery case can crack.

Step 10: Install the positive battery cable

• Place an anti-corrosion washer on the positive battery post if supplied.
• Push the positive cable fully down onto the positive post.
• Use a 10mm socket and torque wrench to tighten the positive terminal clamp nut.
• Torque to 5 Nm (44 in-lbs)

Step 11: Install the negative battery cable

• Place an anti-corrosion washer on the negative battery post if supplied.
• Push the negative cable fully down onto the negative post.
• Use a 10mm socket and torque wrench to tighten the negative terminal clamp nut.
• Torque to 5 Nm (44 in-lbs)
• Negative cable goes on last.

Step 12: Protect the terminals

• Use battery terminal protector spray on the finished cable connections.
• Spray lightly. Do not soak the battery top.

Step 13: Reset the Battery Monitoring System

• Sit in the driver seat with all doors closed.
• Turn the ignition to ON without starting the engine. For a key ignition, turn the key to RUN.
• Use your hand to pull the high-beam/flash-to-pass lever toward you 5 times.
• Use your foot to press and release the brake pedal 3 times.
• Watch the battery warning light on the dash. It should flash to confirm the reset.
• If it does not flash, wait 30 seconds and repeat the sequence.

Step 14: Start the truck and check operation

• Start the engine normally.
• Use your eyes to confirm the battery warning light turns off after startup.
• Use your hands to gently wiggle both battery cables. They should not move on the posts.

---

✅ After Repair

• ✅ Let your F-150 idle for 2-3 minutes after the first start.
• ✅ Reset the clock, radio presets, and one-touch window function if they lost memory.
• ✅ If the driver window auto-up/down does not work, fully lower the window, then fully raise it and hold the switch up for 2 seconds.
• ✅ Drive normally for a few trips so the engine idle and charging strategy can relearn.
• ♻️ Recycle the old battery at a parts store or battery recycler. Do not throw it in household trash.

---

💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $170-$300 (parts only)

You Save: $80-$150 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.7 hours.

---

🎯 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.