Hybrid Battery Test

Li-ion

Honda Civic Hybrid 3rd Generation IMA Battery (144V Li-ion)

The Honda Civic Hybrid 3rd Generation IMA Battery (144V Li-ion) is the high voltage battery in the Honda Civic Hybrid (2012-2015).

At a Glance

  • Li-ion chemistry
  • 144 volts nominal
  • 4 modules
  • active forced cabin air; integrated cooling unit on battery box, air enters via vent on left outboard rear seat bolster cooled

Specifications

ChemistryLi-ion
Cell makerBlue Energy (GS Yuasa/Honda JV)
Nominal voltage144 V
Modules4
Module voltage36 V
Capacity4.5 Ah
Energy0.68 kWh
Coolingactive forced cabin air; integrated cooling unit on battery box, air enters via vent on left outboard rear seat bolster
LocationIPU directly behind the rear seatback
Weight22 kg

Cars That Use It

What Goes Wrong

Reported failures, each from a source listed below, as of October 7, 2026.

  • Owner complaints NHTSA lists under the Hybrid Propulsion System component for the Honda Civic Hybrid, by model year: 2012: 1 · 2013: 1 · 2015: 1. These are all hybrid system complaints, owner reported and unverified, not only battery faults, as of 2026-10-07.

Same Electrical Spec

These packs share this one's chemistry, voltage and module count. That is a spec match only. It does not mean the parts fit each other, so check with a technician.

Warranty

Honda's 2013 Civic Hybrid emissions warranty parts list (APL 48365) lists the IMA battery assembly at 8 years/100,000 miles in all states and 10 years/150,000 miles for ARB AT-PZEV-certified cars registered in California, Connecticut, Massachusetts, Maryland, Maine, New Jersey, New York, Rhode Island and Vermont (Oregon AT-PZEV cars also get 10/150); 2012, 2014 and 2015 lists were not found. (owners.honda.com: APL48365.pdf, 2026-10-07)

How battery warranties work.

Get This Pack Tested

Do not open it yourself. The pack can hurt you with the car switched off.

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How to test a hybrid battery safely

Sources

  1. hondanews.com: release-2cfa87fb4cc34bdf9f49e2a633372a2f-2012-honda-civic-hy
  2. hondanews.com: release-0ac99d96d951431eb2681c5223bd537e-new-2012-honda-civi
  3. energy.gov: batteryCivic1260.pdf
  4. techinfo.honda.com: Y0716.pdf
  5. owners.honda.com: APL48365.pdf
  6. NHTSA complaints, 2012 Honda Civic+Hybrid
  7. NHTSA complaints, 2013 Honda Civic+Hybrid
  8. NHTSA complaints, 2015 Honda Civic+Hybrid

Last updated October 7, 2026. Failure and recall notes are as of that date. Spotted a mistake, or speaking for a maker? Report an error.

Hybrid Battery Test is independent. It is not affiliated with, sponsored by or endorsed by Blue Energy (GS Yuasa/Honda JV), Honda. Names and part numbers are used only to identify the vehicle and the part.