EV Cooling System – Hyper 9 & Universal Inverter/Battery Liquid Cooling Kit

This compact liquid cooling system is engineered specifically for the NetGain Hyper 9 or HPEVS AC50 inverter chill plate, and is also compatible with other small EV components. Ideal for liquid cooling inverters, batteries, chargers, or DC/DC converters, this kit offers professional-grade AN-6 nylon braided hose and fittings, quiet operation, and compact packaging. It's perfect for EV conversions with limited space.

Key Features

• Direct Fit for Hyper 9 & AC50 Chill Plates

• Compact & Quiet Operation

• Mounting Hardware Friendly

• No Guesswork – All Hoses & Anodized Fittings Included

What’s Included

Cooling System Components

• HC600 12V DC Brushless Water Pump

  • Flow: 480 L/h

  • Head Pressure: 3 meters

  • Power: 10W @ 12V

  • Noise: 38 dBA

  • G1/4" ports with black AN-6 adapters

  • Mounting: Integrated rubber isolation feet, accepts M5 × 0.8 mm bolts or studs

• 10-Tube Aluminum Radiator

  • Dual RDH1225B 120mm 12V fans (2400 RPM, 87.8 CFM each)

  • Noise: 41 dBA

  • 1/4" BSPP ports with black AN-6 adapters

  • Mounting: Accepts M3 × 0.5 mm bolts through radiator mounting flange on bottom

• 1L Black Anodized Aluminum Reservoir

  • Screw off, sealed fill cap

  • 1/4" BSPP ports with black AN-6 adapters

  • Mounting: Slotted bracket holes – approx. 7.7mm (0.303") wide

• 10 ft Black Nylon Braided AN-6 Rubber Hose

  • No stainless mesh – very flexible and easy to cut with a sharp knife. No special tools needed!

  • Compatible with included aluminum hose ends

Fittings (All Black Anodized Aluminum)

** If your application needs AN-6 90 degree fittings you can find them (HERE)

Component Dimensions

• Pump (with AN fittings and rubber isolator feet):
  Approx. 92 mm (L) × 70 mm (W) × 95 mm (H) 

• Radiator:
  260 mm (L) × 120 mm (W) × 60 mm (H)

• Reservoir:
  ~1L black anodized aluminum
  Approx. 130 mm (H) × 114 mm (W) × 84 mm (D)

Applications

• Hyper 9 inverter systems

• HPEVS / Curtis systems

• Battery pack cooling

• Chargers

• DC/DC converters

• Compact EVs, motorcycles, UTVs, etc.

This is not a generic PC cooling system — it’s a purpose-built thermal solution for real-world EV projects. Designed to use standard automotive 50/50 glycol coolant, it delivers the durability and serviceability expected in automotive environments. With all black-anodized CNC fittings, AN-6 compatibility, clean braided hose, and a compact layout, it installs easily and performs reliably in demanding builds.

RTV is not included you can purchase it (here).

Cooling kit plug schematic