New sodium-ion hybrid batteries · Real-person support





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Acenbay MNB321 combines a replacement voltage-sensing wire harness with nickel-plated copper bus bars and stainless steel nuts for 2004–2009 Toyota Prius Gen 2 battery service.
2004–2009 Toyota Prius Gen 2.
Match the connector layout, existing part number and installed battery configuration. Similar vehicle years or photos do not establish interchangeability.
Hybrid batteries contain high voltage. Have a qualified technician follow the vehicle service manual and the battery manufacturer’s instructions, using the required protective equipment.
Wiring note: wire colors do not match the factory wiring diagram. Install the harness in the existing housing in the sequence specified on the packaging label or manufacturer’s product photos. These are battery-service components; a complete hybrid battery pack is not included.
Contact My New Battery with your vehicle year, model, installed battery configuration and existing part details before ordering if the match is uncertain.
For an included orange housing, see the Gen 2 harness assembly. Harness-only option also available.
Eligible hybrid battery packs offer a Standard 2-Year or optional Platinum 10-Year warranty, both with unlimited miles. Coverage is for the original purchaser and begins on delivery. Select the plan offered for this product.
Read the full hybrid battery warranty options, eligibility and exclusions. For other products, consult the warranty policy, product listing and your order confirmation.
Need help with a claim? Contact tech@mynewbattery.com with your order number. Request an RMA before returning any item.
Shipping rates are shown at checkout. Review our shipping policy for processing, delivery estimates and destination restrictions. For a product-specific estimate, contact us with your ZIP code before ordering.
Eligible new, unused items have a 30-day return window from delivery. Request an RMA before sending anything back. No restocking fee applies to approved returns. Condition requirements, exclusions and return shipping are detailed in our return and refund policy.
Tell us your model year and vehicle. We’ll help you understand the listed battery and parts options.
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