What battery does a 2007 Honda Civic Hybrid take?

The 2007 Honda Civic Hybrid uses two different batteries: a 12‑volt BCI Group 51R lead‑acid battery (often AGM) for accessories and starting control systems, and a high‑voltage nickel‑metal hydride (NiMH) Integrated Motor Assist (IMA) pack rated at about 158.4 volts for hybrid propulsion. If you’re asking about the key fob, it typically uses a CR1616 3V coin cell.

The 12‑volt auxiliary battery (under the hood)

This conventional battery powers the car’s electronics, computers, lighting, and relays. In the Civic Hybrid, the engine is cranked by the hybrid motor, but the 12‑volt battery is still essential for starting the vehicle’s systems and overall reliability.

Key specifications for the 12‑volt battery

The following points summarize the common fitment and performance details most owners will need when purchasing a replacement 12‑volt battery.

• BCI Group size: 51R (reverse terminal layout)
• Type: Lead‑acid; AGM (Absorbent Glass Mat) is recommended but flooded lead‑acid is also used
• Cold Cranking Amps (CCA): typically 410–500 CCA (varies by brand)
• Dimensions: roughly 9.4″ L x 5.1″ W x 8.8″ H (24 x 13 x 22.5 cm), confirm tray fit
• Terminal type: JIS posts (smaller than standard SAE on many brands)
• Location: Engine bay, right/passenger side

Choosing an AGM unit can improve durability under heat and frequent cycling, but any quality Group 51R meeting the manufacturer’s specs will work. Always match the terminal orientation and size to avoid cable strain.

Replacement tips for the 12‑volt battery

Swapping the 12‑volt battery is straightforward, but hybrid models benefit from a few extra precautions.

• Save settings: Use a memory saver if you want to preserve radio presets and clock; some models may prompt for radio anti‑theft code after power loss.
• Safety first: Turn the car off, remove the key, and disconnect the negative (–) cable before the positive (+).
• Cleanliness: Inspect and clean terminals; ensure tight, corrosion‑free connections.
• Charging profile: AGM batteries prefer modern smart chargers if you trickle‑charge off the car.

With proper installation and charging, a quality Group 51R battery typically lasts 3–5 years, depending on climate and use.

The high‑voltage hybrid battery (IMA pack)

The Civic Hybrid’s traction battery powers the electric motor, enables engine assist, and captures regenerative braking energy. It is separate from and far more powerful than the 12‑volt battery, and it requires special handling.

Key specifications for the IMA pack

These are the core technical characteristics of the 2007 Civic Hybrid’s high‑voltage battery system.

• Chemistry: Nickel‑metal hydride (NiMH)
• Nominal voltage: Approximately 158.4 V
• Cell/module layout: 132 cells (typically 22 modules × 6 cells per module)
• Capacity: About 5.5–6.0 Ah (varies by production batch and replacement unit)
• Cooling: Air‑cooled, with fan and ducting
• Location: Behind the rear seat, within the IMA battery enclosure

Because this is a high‑voltage system, only trained technicians with proper protective equipment should service or replace the pack. There is a service disconnect, but residual voltage and stored energy present shock risks.

Service life, warranty, and replacement options

Many original packs have aged out by now, but there are several viable paths for repair or replacement.

• Original warranty (for context): 8 years/80,000 miles federally; up to 10 years/150,000 miles in CARB states (now expired for 2007 models).
• Replacement choices: New OEM pack, Honda‑remanufactured pack, or reputable third‑party remanufactured pack.
• Typical costs (2025): About $2,000–$3,500 for the part alone; $2,500–$4,500 installed, depending on region and source.
• Diagnostics: Have a hybrid‑qualified shop scan for IMA codes and assess state of health before committing to replacement.

While remanufactured options can be cost‑effective, ensure the supplier offers a solid warranty and uses matched, tested modules to maintain pack balance and longevity.

Key fob (remote) battery

If your question is about the remote, most 2007 Civic Hybrid key fobs use a single CR1616 3V coin cell. Some market variants may differ, so check the stamping inside the fob or your owner’s manual to confirm.

How to confirm what you need

Before purchasing, it’s wise to verify the exact specifications for your particular vehicle and region.

• Owner’s manual: Lists the correct 12‑volt battery group and fob battery type.
• Under‑hood label: Many batteries have the group size and CCA printed on top.
• VIN‑based lookup: A Honda dealer or reputable parts site can confirm fitment using your VIN.
• Hybrid diagnostics: For IMA issues, have a hybrid‑certified technician read the IMA system codes and evaluate pack health.

These quick checks ensure you purchase the right battery the first time and avoid installation hassles.

Summary

A 2007 Honda Civic Hybrid uses two main batteries: a 12‑volt BCI Group 51R lead‑acid (AGM commonly recommended) for vehicle electronics, and a high‑voltage NiMH IMA pack of about 158.4 V for hybrid propulsion. The key fob typically takes a CR1616 coin cell. Verify specs in your owner’s manual or via a VIN‑based parts lookup, and use a qualified hybrid technician for any work on the high‑voltage system.

What type of battery is in a 2007 Honda Civic?

Optima – Battery: 51R Group Size, 450 CCA, 575 CA, 66 Minute Reserve Capacity, Deep-Cycle (Part No. D51R)

What type of battery in Honda Civic Hybrid?

The battery pack in a Honda Civic Hybrid is typically composed of a series of individual battery cells, often made of nickel-metal hydride (NiMH) or lithium-ion (Li-ion) technology.

Can you drive a 2007 Honda Civic Hybrid without the hybrid battery?

Certain older Honda hybrids (like the Honda Civic Hybrid) can still drive without hybrid power, but they’ll be very sluggish, and the engine will work harder, leading to poor fuel economy and possible damage over time.

How much is a battery for a 2007 Honda Civic Hybrid?

Honda Civic 2006-2011 Remanufactured Hybrid Battery, 12 Months Warranty. $1,295.00.