Description
Vehicle Compatibility
Compatible with:
• Toyota Sai Hybrid
• Model Years: 2009 – 2017
• Hybrid System: Toyota Hybrid Synergy Drive (THS II)
• Engine Platform: 2.4 L 2AZ-FXE
Not compatible with non-hybrid Sai models. VIN verification recommended.
Hybrid System Engineering
The Toyota Sai Hybrid integrates:
• 2.4 L Atkinson-cycle petrol engine
• Dual Motor-Generator System (MG1 & MG2)
• ~245 V High-Voltage NiMH Battery Pack
• Hybrid Vehicle Control ECU
• Power Split Device
• E-CVT Transmission
• Regenerative Braking System
• Active Battery Cooling
Battery Performance Directly Impacts:
• Electric motor assist power
• Fuel efficiency
• Charge/discharge stability
• Hybrid ECU load management
• Regenerative braking recovery
• Thermal performance of hybrid components
A brand-new battery ensures stable voltage, low internal resistance, and long-term reliability.
Signs Your Sai Hybrid Battery May Be Failing
Symptoms to watch for:
• Check Hybrid System dashboard warning
• Fluctuating battery charge levels
• Reduced fuel economy
• Increased petrol engine operation
• Loud rear battery cooling fan
• Hybrid diagnostic codes via OBD
Timely replacement prevents stress on the inverter and hybrid ECU.
Toyota Sai Hybrid New Battery Cost Guide
Cost factors:
• Labour and ECU calibration
• Warranty coverage
• Brand-new vs rebuilt selection
Hybrid Fix Garage provides:
• Professionally rebuilt NiMH battery
• 1-Year unlimited km warranty
• 2-Year unlimited km warranty (commercial)
• OEM-compatible plug-and-play fit
• Professional installation & ECU support
VIN-specific quotes recommended.
Brand-New vs Rebuilt vs Dealership OEM
Rebuilt (Hybrid Fix Garage):
Tested and balanced modules with verified internal resistance and load testing. Affordable solution for daily driving.
Brand-New:
New cells with highest reliability and long lifespan at higher cost.
Dealership OEM:
Factory-fresh OEM cells with high reliability, representing the highest price tier with varying warranty terms.
Brand-new packs are ideal for long-term ownership and high-mileage vehicles.
Technical Specifications
Battery Type: High-Voltage Nickel-Metal Hydride (NiMH)
Nominal Voltage: ~245 V
Platform Code: Toyota Sai Hybrid (AZK10)
Condition: Professionally Rebuilt
Warranty: 1 Year Unlimited km
Installation: 2–4 hours
Cooling Integration: OEM-Compatible
All batteries undergo:
• Load performance testing
• Voltage balancing & IR verification
• Thermal inspection
• Structural integrity validation
Expected Lifespan
Typical lifespan: 8–15 years, depending on driving conditions, climate, and hybrid system maintenance.
Professional Hybrid Installation
Includes:
• High-voltage isolation & safety
• Battery removal & installation
• ECU reset & hybrid system calibration
• OBD diagnostic verification
• Responsible recycling of old battery
Installation typically takes 2–4 hours.
Why Hybrid Fix Garage?
• Hybrid System Certified Specialists
• Reliable Rebuilt Battery Solutions
• Transparent Pricing & Warranty
• Dedicated Hybrid Support Team
• Eco-Friendly Battery Recycling
We focus on long-term hybrid system reliability, not just replacement.
Frequently Asked Questions
Is this battery brand-new?
This is a professionally rebuilt NiMH hybrid battery.
Will it fit my Sai Hybrid?
Yes — compatible with 2009–2017 Toyota Sai Hybrid only. VIN verification recommended.
How long does installation take?
Typically 2–4 hours.
What warranty is included?
1 year unlimited kilometers.






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