Quick answer: Battery Replacement on a 2019–2024 RAM 1500 is rated Easy and takes about 30–45 minutes. You'll need 4 tools for this job, and parts cost about $140. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name |
Part Number |
Price |
Buy |
| Correct group-size battery |
— |
$140.00 |
|
| Terminal cleaner Optional |
— |
$8.00 |
|
| Terminal protectant Optional |
— |
$7.00 |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Park safely and locate the battery
Park on level ground, shift to Park, set the parking brake, and turn the ignition fully off. Open the hood and look at the passenger side of the engine bay: the 12-volt battery sits in a molded battery box on the passenger side, ahead of the firewall. This guide covers only that conventional 12-volt starting battery. If your truck has the eTorque mild-hybrid system, it also carries a separate 48-volt battery pack behind the rear seat inside the cab — leave that high-voltage unit completely alone. Put on safety glasses and gloves.
🔧 Mechanic's note — Ray Delgado
In my experience, if your Ram has eTorque, that 48-volt pack behind the rear seat is not your problem today — identify it, then leave it completely alone. This job is the 12-volt box under the hood only.
2
Open the battery box and study the hold-downs
Remove any cover or lid from the battery box so you can see the whole battery. Also note any small spacer tab in the tray — it positions the factory-size battery and should stay with the truck.
🔧 Mechanic's note — Tom Becker
Photograph those two clamps before you touch them — they look similar but they are not interchangeable, and I've watched guys spend twenty minutes figuring out which one goes where.
3
Disconnect the negative terminal first
Identify the negative post by the minus sign and black cable. Loosen the clamp bolt with the fitting wrench or socket, turning counterclockwise until the clamp can move.
4
Disconnect the positive terminal
Lift the clamp — and any stacked cable lugs — off the post carefully, keeping their order for reassembly. Open the red cover on the positive post and loosen its clamp bolt the same way.
5
Remove the hold-down clamps and lift the battery out
Remove the single bolt from the engine-side hold-down clamp and lift the clamp clear, then do the same with the firewall-side clamp — a short extension on your ratchet makes the firewall-side bolt far easier to reach.
6
Clean the box and install the new battery
Brush debris and corrosion out of the battery box and tray, and scrub the inside of both cable clamps with a terminal brush until you see clean metal. Confirm the spacer tab is still in place, then lower the new battery into the box in the exact orientation the old one sat — posts aligned with their cables, since cable slack is limited. Refit both hold-down clamps in their original positions and tighten their bolts until the battery is completely immobile; push it hard in every direction to verify.
7
Reconnect the cables and check your work
Reconnect the positive cable first, stacking any lugs back in their original order and tightening the clamp bolt until snug, then reconnect the negative cable last. Close the red positive cover and refit the battery box lid. Start the truck and verify strong cranking, then run the headlights, blower, and wipers. Expect the clock, radio presets, and trip meters to reset, and the auto stop-start and other modules may need a few drives to settle — your owner’s manual lists anything requiring attention. Take a short test drive and recheck that both hold-down clamps are still tight.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Removing only the easy engine-side clamp and then forcing the battery past the firewall-side clamp — both must come off.
- • Mixing up the order of stacked cable lugs on the terminals, which can leave a critical circuit loose.
- • Confusing the eTorque 48-volt pack behind the rear seat with the 12-volt battery — only service the 12-volt unit under the hood.
- • Tossing the small spacer tab from the tray, which the factory battery size needs to sit correctly under the clamps.
