HYUNDAI
Hyundai Ioniq Hybrid Battery (2017–2022)
Problems, Warning Codes, Repair Options and Prices — Mobile Service in North Dallas
✓ Lithium-ion polymer pack under the rear seat
✓ Module repair from $700
✓ Diagnostic credited toward the repair
Vehicles › Hyundai › Ioniq Hybrid
Quick Answer
Battery: Lithium-ion polymer, about 1.56 kWh, 240 V
Location: Under the rear seat
Most common codes: P1B70 and P0A7F — see our Hyundai/Kia code guide
Check first: Hyundai hybrid battery coverage may still apply — check with your VIN
Typical fix: Test first; repair only what testing shows is needed
The Ioniq Hybrid was sold in the U.S. from 2017 to 2022. It uses a lithium-ion polymer battery under the rear seat. Lithium packs behave differently from Toyota NiMH packs, and many warnings come from software, fuses or relays rather than the cells.
Ioniq Hybrid Hybrid Battery by Generation
| Item | Ioniq Hybrid (2017–2022) |
|---|---|
| Chemistry | Lithium-ion polymer |
| Capacity / voltage | About 1.56 kWh, 240 V |
| Location | Under the rear seat |
| 12V battery | A separate lithium 12V battery, also under the rear seat |
Ioniq Hybrid: What Owners Should Know
- The Ioniq Hybrid (2017–2022) uses a 240-volt, 1.56 kWh lithium-ion polymer pack under the rear seat.
- Its 12-volt battery is also lithium and lives near the hybrid pack. If it is drained, the car may not start until you press the 12V battery reset button.
- Hyundai offered lifetime hybrid battery coverage to original owners of many Ioniq Hybrids. If you bought your car new, check with a Hyundai dealer by VIN before paying for any battery work.
- The Ioniq Hybrid shares its basic hybrid system with the first-generation Kia Niro Hybrid.
- Check your VIN for open recalls on NHTSA.gov before paying for any hybrid repair.
Common Symptoms
- “Check Hybrid System” or a hybrid warning light
- Car won’t go into READY or shuts down
- Engine runs constantly and MPG drops
- Reduced power or limp mode
- Warnings that come and go
Problems We See Most
12V lithium battery drained
The Ioniq Hybrid’s 12V battery is lithium and has a reset button. A drained 12V can look like a big hybrid problem.
Software and bulletins
Check for Hyundai updates and campaigns first — they fix some warnings for free.
Real cell faults
When testing shows real cell problems, we explain repair and replacement options.
Warning Codes on the Ioniq Hybrid
The Ioniq Hybrid uses Hyundai/Kia-specific codes such as P1B70, P1B77 and P1B25, plus P0A7F. Many point to software, the safety plug fuse or the power relay assembly rather than the cells — see our Hyundai/Kia code guide.
Ioniq Hybrid Hybrid Battery Prices
| Service | Price (tax and mobile service included) |
|---|---|
| On-site full diagnostic | $150 in our North Dallas service area ($200 elsewhere in DFW) — credited toward the repair |
| Full pack rebuild | Quoted after testing — call for a price |
| Module repair (only weak modules replaced) | From $700 labor + parts |
| External pack charge (car sat too long / pack drained) | From $300 — see hybrid battery charging |
| Pre-purchase hybrid battery inspection | From $200 |
| Full battery replacement | Call for a quote |
Final price is confirmed after testing. Warranty runs from 1 to 3 years depending on the vehicle’s condition and mileage, in writing before work begins. See our full hybrid battery price list.
How DFW Hybrid Battery Handles a Ioniq Hybrid
We read the Hyundai/Kia-specific codes, check bulletins and campaigns, test the safety plug fuse, the power relay assembly (PRA) and the BMS data, and only then look at cell-level repair or a rebuild.
Real Ioniq Hybrid jobs — coming soon
We publish real repair notes, test data and customer reviews for every model we work on. Had your Ioniq Hybrid checked by us? Leave a Google review — or see our repair case studies for similar hybrids.
Frequently Asked Questions
Is the Ioniq Electric or Plug-in covered here?
This page covers the Ioniq Hybrid. The Electric and Plug-in versions use larger batteries — call us about them.
Can an Ioniq Hybrid battery be repaired?
Sometimes. It depends on what testing finds. Damaged or swollen cells must be replaced.
Is it under warranty?
Many Ioniq Hybrids may still have Hyundai hybrid battery coverage. Check with your VIN first.
Other Hyundai hybrids we service: Sonata Hybrid · Santa Fe Hybrid · All Hyundai models
Related: Prices · All vehicles · Hybrid Error Codes · Battery Charging · Diagnostics · Warranty · Areas We Serve
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