Thinkcar EVC303 Leak Tester for Independent Workshops – HV Battery Packs

The Thinkcar EVC303 is a high-precision, non-destructive test system for leak testing high-voltage battery packs in electric vehicles. Using compressed air and highly sensitive pressure sensors, it detects leaks in the battery housing reliably and reproducibly – a professional test device in workshop quality for independent workshops, battery service centres and commercial test facilities.

• ✔ Test pressure 0–30 kPa with 1 Pa sensor resolution
• ✔ Measuring accuracy ±5 Pa
• ✔ Non-destructive testing with dry compressed air
• ✔ Automatic test sequence in four phases
• ✔ Automatic documentation of test results
• ✔ Purchase on account available (Klarna or PayPal)

How the leak test works

The EVC303 introduces a low test pressure (0–30 kPa) into the battery housing using dry compressed air. A pressure sensor with a resolution of 1 Pa measures the pressure change over time: if the housing is sealed, the pressure remains stable – if it drops below a defined threshold, the system detects a leak. The test sequence comprises four phases:

• Filling phase: building up the test pressure in the battery housing
• Stabilisation phase: pressure equalisation to compensate for material expansion
• Test phase: monitoring the pressure drop to detect leaks
• Venting phase: releasing the pressure and resetting the system

Why battery pack tightness matters

A leaking battery pack can let in moisture, dust or gases – with the risk of short circuits, corrosion or fire. The EVC303 checks tightness before installation or after a repair, for example after a cell replacement or drying. As the test is non-destructive, the battery pack remains undamaged; this saves material and time compared with water or helium tests.

Areas of application

• Service and repair: leak testing after opening a high-voltage battery pack
• Quality inspection: checking battery module housings and seals
• End-of-line testing: testing every pack before vehicle assembly

Operating requirements

Operation requires a supply of dry compressed air (0.1–1.0 MPa) and a mains connection. Suitable test adapters are needed to connect to the respective battery housing – please contact us before ordering and we will clarify the connection to your battery packs.

Technical data

Scope of delivery

• Thinkcar EVC303 leak tester

Battery-pack-specific test adapters and compressed air hoses are not specified in detail in the supplier information – please ask us before ordering.

High-voltage safety notice

Work on high-voltage components of electric and hybrid vehicles may only be carried out by appropriately qualified specialists in compliance with the manufacturer’s instructions. Please read the device’s user manual before use.

Purchase on account available

Pay conveniently on account via Klarna or PayPal – ideal for business customers and independent workshops. Questions about compatibility with your vehicle or device? Call us: +49 711 3654 4645.

Free shipping from €50 (Germany) – within the EU from €100

Delivery

Delivery is made to the delivery address provided by the customer during the ordering process. By way of exception, where PayPal is selected as the payment method, the delivery address stored with PayPal at the time of payment is decisive.

If delivery to the customer was not possible and the transport company returns the goods to the seller, the customer bears the costs of the unsuccessful delivery. This does not apply where the customer exercises their right of withdrawal by refusing acceptance, where they are not responsible for the circumstance that made delivery impossible, or where they were temporarily prevented from accepting the goods – unless the seller had given them reasonable advance notice of the delivery.

Shipping costs

• Germany: free from an order value of €50, below that €3.99
• European Union: free from an order value of €100, below that €14.99
• Switzerland: €20.00
• United Kingdom: GBP 20.00

Delivery area and delivery time

We deliver to Germany, to the 26 other countries of the European Union and to Switzerland and the United Kingdom. We are currently unable to deliver to other countries.

For deliveries to Switzerland and the United Kingdom, customs duties, import taxes or other charges may be incurred in addition; these are borne by the customer.

The delivery time within Germany is usually 1–3 working days.

Payment methods

You can pay by credit card (Visa, Mastercard, Maestro), PayPal, Klarna (purchase on account or instalments), Shop Pay, Apple Pay, Google Pay, advance payment by bank transfer or cash on delivery.

Cash on delivery is only available for deliveries within Germany from an order value of €50. An additional fee of €9.99 is charged for it.

Digital licences and activations

Update licences, secure gateway activations and HaynesPro access are digital goods. No shipping costs apply – you will receive the activation code by email once payment has been received, usually within 1–3 working days.

If the licence is tied to a device, enter your device’s serial number directly in the order form when purchasing. That way we can set up the activation for your device without further enquiries.

Please note: for digital licences the right of withdrawal expires as soon as we have begun providing the item and you have expressly agreed to this beforehand. For devices and all other goods, the statutory right of withdrawal applies unchanged.