Convert Your Hybrid CAR Into a Plug-In EV
Replace your weak NiMH battery with a 10 to 17 kWh Lithium-ion or LiFePO4 pack. Drive 40 to 80 km on pure electric, cut fuel costs by up to 70%, and back it with a 2-year warranty.
Choose Your Conversion Package
Three proven battery pack options. Every conversion includes in-house build, installation, BMS integration, and a 2-year warranty on battery backup.
Essential Plug-In
- Pack: 12 kWh (rated 14 kWh)
- Range: 40 to 55 km electric, up to 70 MPH
- Fits: Toyota Prius 2004 to 2009 (2nd Gen) and ALL Toyota, Honda and Nissan Models that comes with Hybrid Battery
- Cells: EVE Lithium-ion
- Install: In 1-2 days at our shop
- Warranty: 2 years on battery backup
Performance Plug-In
- Pack: 15 kWh (rated 17 kWh)
- Range: 70 to 80 km electric, 80 miles combined at 100 MPG
- Fits: Prius, Aqua, Honda Vezel
- Cells: LiFePO4 or Nissan Leaf
- Tech: BMS, CAN integration, Bluetooth
- Warranty: 2 years on battery backup
Custom Hybrid Upgrade
- Pack: 10 - 20 kWh
- Backup: 40 to 150 km/l equivalent
- Fits: Prius, Aqua, Vezel (any year)
- Cooling: Keeps stock system intact
- Safety: Rear-mounted for crash protection
- Warranty: 2 years on battery backup
Since 2014
Years of PHEV expertise
500+ Conversions
Successfully delivered
2-Year Warranty
On parts and workmanship
1-2 Days Install
Quick turnaround
What You Get With Every Conversion
Every package includes premium hardware, smart monitoring, and safety integration as standard.
Customized External Charging
Plug into any standard outlet at home or work. Charge overnight, drive on pure electric by morning.
70% Fuel Cost Reduction
Cut monthly fuel bills dramatically. Most city commuting runs on electric alone, petrol only for long trips.
Lightweight Design
Saves 90 lbs versus the original NiMH pack. Better handling, better efficiency, less strain on suspension.
Seamless Mode Switching
Switch between EV, PHEV, and Hybrid modes on the fly. No stops, no reboots, no compromises.
Aftermarket BMS for Safety
Battery Management System monitors every cell in real time. Protects against over-charge, over-discharge, and heat.
Bluetooth and CAN Monitoring
Live dashboard data on your phone via Bluetooth. You can track voltage, temperature, and range.
NiMH vs Lithium: Side by Side
See exactly what you're gaining by upgrading from the factory battery to our Lithium or LiFePO4 pack.
| Specification | Original NiMH | Our Lithium Upgrade |
|---|---|---|
| Capacity | 0.9 to 1.2 kWh | 10 to 17 kWh |
| Voltage | 201.6V | 201.6V ± 2 |
| Weight | Approx. 120 lbs | Approx. 180 lbs (saves 90 lbs per kWh ratio) |
| Range per Charge | Assist only, 1 to 2 km EV | 40 to 80 km pure electric |
| Lifespan | 6 to 8 years typical | 10+ years, 4000+ cycles |
| Safety | Stock monitoring only | Aftermarket BMS with CAN integration |
| Warranty | No warranty on used OEM | 2 years on battery backup |
| Price Range | OEM replacement varies | Starts from 650,000 |
Supported Vehicles
We convert the most popular Toyota, Honda and Nissan hybrid platforms in Pakistan. Not sure if your vehicle fits? WhatsApp us the chassis number.
| Vehicle | Year Range | Recommended Pack | Estimated Electric Range |
|---|---|---|---|
| Toyota Prius 2nd Gen | 2004 to 2009 | 12 kWh EVE Lithium-ion | 40 to 55 km |
| All Toyota Cars that comes with Lithium-ion | 2010 to 2015 | 15 kWh LiFePO4 or Leaf | 55 to 80 km |
| Nissasn | 2011 to 2021 | 10 to 15 kWh LiFePO4 | 45 to 70 km |
| Honda Vezel | 2013 to 2021 | 15 kWh LiFePO4 | 50 to 75 km |
Our 4-Step Conversion Process
From the first diagnostic to warranty handover, here is exactly what happens when you choose Hybrid EV Engineering.
Free Diagnostic
We inspect your vehicle, assess battery health, and give you a no-obligation estimate.
In-Shop Build
Your custom lithium pack is built, tested, and validated on our bench before installation.
1-2 Days Install
Pack fitted to the rear, BMS wired in, charging port added. 1-2 days turnaround, no weeks in the shop.
Setup and Handover
CAN and Bluetooth app configured, road test completed, 2-year warranty on battery backup, paperwork in your hand.
Frequently Asked Questions
Everything customers ask us before they book a conversion. Still have questions? Message us on WhatsApp.
How long does the conversion take?
Will this void my Company warranty?
What electric range will I actually get?
Do I need to modify my car's body?
What happens to my old NiMH battery?
What's included in the 2-year warranty?
Ready to Cut Your Fuel Bill by 70%?
Stop feeding your hybrid a dying NiMH pack. Upgrade to a lithium PHEV conversion, plug in at home, and drive on electric every day. Free estimates. No pressure. 2-year warranty on every build.
Ev Car Conversion
Toyota Hybrid Battery Upgrade Solutions
At Hybrid EV Engineering, we are working on an innovative project to upgrade Toyota hybrid cars, such as the Toyota Aqua and Toyota Prius, by replacing the original NiMH battery with advanced Hybrid Batteries, including lithium-ion or Lithium Iron Phosphate (LiFePO4) cells. These upgrades also extend to vehicles like the Honda Vezel, ensuring enhanced performance and reliability for your Prius Hybrid Battery or Aqua Hybrid Battery.
Why Upgrade to Lithium-Ion or LiFePO4?
The original Toyota hybrid NiMH battery, commonly found in models like the Toyota Prius and Toyota Aqua, consists of 20 cells providing approximately 0.9 kWh, or 28 cells offering 1.2 kWh. Our upgrade replaces this with a 10 kWh Hybrid Battery, such as a lithium-ion or LiFePO4 battery, using 50Ah cells (including EVE cells or Nissan Leaf cells). This solution is ideal for enhancing the performance of your Aqua Hybrid Battery, Prius Hybrid Battery, or even hybrid systems in vehicles like the Honda Vezel, ensuring:
- Significant Backup Improvement: Achieve an estimated 60–80 km/l on a single external charge.
- Cost Efficiency: More affordable than replacing the original NiMH battery.
- Advanced Safety: Integrated with aftermarket BMS (Battery Management Systems) for enhanced reliability and safety.
What to Expect
- Customized External Charging: The upgraded Hybrid Battery in vehicles like the Toyota Prius, Toyota Aqua, or Honda Vezel allows external charging for added convenience.
- Maximized Backup: Improved capacity and performance tailored to meet customer demands, making it a perfect solution for enhancing your Prius Hybrid Battery or Aqua Hybrid Battery.
- Practical Design: While the upgrade is cost-efficient and significantly enhances performance, it requires a bit of extra space in the car’s back area to accommodate the advanced lithium-ion or LiFePO4 battery system.
Toyota Hybrid and Prius Plug-In Conversion Solutions
At Hybrid EV Engineering, we are at the forefront of transforming Toyota hybrid vehicles, including Toyota Prius, Toyota Aqua, and Honda Vezel, with innovative Hybrid Battery upgrades and plug-in conversion kits. Whether you’re looking to enhance your car’s Prius Hybrid Battery or Aqua Hybrid Battery backup performance, or switch to a plug-in hybrid system, we have the right solution for you.
Prius Plug-In Conversion Kits
In 2014, we introduced our Prius Plug-In conversion kit, dedicated to Toyota Prius 2004–2009 (2nd Gen) models. This advanced kit replaces the original Prius Hybrid Battery (NiMH) with high-capacity lithium batteries, offering options such as:
- 12kWh (rated 14kWh) – $8,800 installed / $8,200 ready-to-install.
- 15kWh (rated 17kWh) – Currently not offered.
Key Features:
- Improved Performance:
Drive 40–55 miles on electric mode at up to 70 MPH.
Combined EV/Gas mode (PHEV) delivers up to 80 miles at 100 MPG. - Lightweight Design:
Adds only 180 lbs while saving 90 lbs from the original Prius Hybrid Battery (NiMH). - Convenient Operation:
Switch seamlessly between EV/PHEV/Hybrid modes without stopping.
Bluetooth/CAN display integration with “Torque” Android software for monitoring. - Safety and Simplicity:
Integrated with the stock Prius Hybrid Battery cooling system.
Rear-mounted for enhanced crash safety. - Quick Installation:
Completed in 4 hours at our shop.
Toyota Hybrid Battery Upgrade
For Toyota hybrid vehicles, we offer an upgrade to replace the original NiMH battery with Lithium-Ion or Lithium Iron Phosphate (LiFePO4) batteries. Our solutions include:
- Custom 10kWh battery using EVE 50Ah cells or Nissan Leaf cells, integrated with aftermarket BMS for advanced safety.
- Improved Fuel Efficiency: Achieve 60–80 km/l on a single external charge.
- Cost-Effective Solution: Affordable compared to the original Prius Hybrid Battery replacement, with slight space adjustments in the car’s rear.
Why Choose Hybrid EV Engineering?
High-Quality Batteries in Stock: Lithium-Ion, LiFePO4, and other premium cells available, including Aqua Hybrid Battery, Prius Hybrid Battery, and Honda Vezel options.
Innovative Plug-In Kits: Designed for performance, safety, and ease of use, tailored for Toyota Hybrid and Prius Hybrid models.
Expert Installation and Support: Customization, CAN integration, and a 2-year warranty on all parts and work.Upgrade your Toyota hybrid or Prius today with Hybrid EV Engineering—where innovation meets efficiency.
Batteries In Stock
We maintain a large inventory of lithium-ion and LiFePO4 cells, ensuring we can meet customer demands for backup and efficiency enhancements.
