Battery

Summary

Source: owner's manual / last verified 2026-10-16 (2019 Civic Sedan Owner's Manual, checking and charging the battery (opens in a new tab)).

Safety

• The battery gives off explosive hydrogen gas during normal operation. A spark or flame can cause it to explode. Wear protective clothing and a face shield, or have a skilled technician do the maintenance.
• Battery posts, terminals, and related accessories contain lead and lead compounds. Wash your hands after handling.
• Disconnect the negative cable first and reconnect it last.
• No group size, CCA, or terminal torque is printed. None is added.

Symptoms

• A warning message on the driver information interface when the sensor on the negative terminal has a problem. The book says to have the vehicle inspected by a dealer.
• Corrosion on the terminals at the monthly check.

Diagnosis

1. The condition of the battery is monitored by a sensor on the negative terminal. A sensor problem is a dealer inspection, not a capacity figure.
2. After a disconnect or a dead battery, the audio system is disabled, the clock resets, and Canadian models need the immobilizer system reset.
3. The replacement must match the specifications. The page does not print those specifications.

Tools

• Damp towel

  The notice says to clean corrosion with a baking powder and water solution, then clean the terminals with a damp towel, dry the battery, and coat the terminals with grease.

Specifications

Steps

1. 01Check the terminals monthly

   Check the battery terminals for corrosion monthly. If the sensor on the negative terminal has a problem, the driver information interface shows a warning and the book says to have the vehicle inspected by a dealer.

   1. When you find corrosion, apply a baking powder and water solution, clean the terminals with a damp towel, dry the battery, and coat the terminals with grease.

2. 02Disconnect negative first if you charge it

   Disconnect both battery cables to prevent damaging the electrical system. Always disconnect the negative cable first, and reconnect it last.

   1. The audio system is disabled and the clock resets after a disconnect or a dead battery.
   2. Canadian models also need the immobilizer system reset.

3. 03Match the replacement to the book

   When replacing the battery, the replacement must be of the same specifications. Consult a dealer for more information.

   1. Do not add a group size. The section does not print one.

Common mistakes

• Disconnecting the positive cable first.
• Buying a group size this sedan book does not print.
• Skipping the audio, clock, and Canadian immobilizer notes after a disconnect.

Parts and tools

Outbound links only. BaySheet does not sell parts. Confirm fitment on the retailer page. Amazon links are searches for a real part name plus this vehicle. Tool rows do not get a product search. The search is not a part number.

• Part

  12-volt battery of the same specifications

  The charging notice says the replacement must be of the same specifications and to consult a dealer. No group size is printed.

  2019 Civic sedan battery section (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.

• Tool

  Damp towel

  The notice says to clean corrosion with a baking powder and water solution, then clean the terminals with a damp towel, dry the battery, and coat the terminals with grease.

  McMaster-Carr wipers (opens in a new tab)

Questions

Sources

• 2019 Civic Sedan Owner's Manual, checking and charging the battery (opens in a new tab). American Honda Motor Co., Inc.. Published 2018-10-26. Read 2026-10-16.

Checklist and email notes

The maintenance checklist is on the site now. The email list is not sending yet, so this box will not store an address.

Other repairs on this 2019 Civic

All Honda Civic repairs

This repair on other vehicles

These guides cover the same kind of work. Their numbers belong to those vehicles, not to this one.