TopDiag BT300 Battery Load Tester – 12V/24V, 20-2000 CCA, Car Battery & Alternator Tester
- £43.22
- £43.22
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Description
xMeet the TopDiag BT300 Battery Load Tester, a compact diagnostic tool designed for 12V and 24V vehicle systems. It quickly assesses battery health, charging status, and starting condition, helping you decide if a battery, alternator, or wiring may need attention. The BT300 is built for both professionals and DIYers, delivering clear results that support informed maintenance decisions without promising guarantees.
It supports a broad range of battery standards including CCA, JIS, GB, SAE, MCA, CA, DIN, IEC, EN and BCI. Note that the BT300 is not compatible with 6V batteries and is not suitable for lithium cells, ensuring you select the right tool for the job.
Key capabilities at a glance
- Universal 12V and 24V testing covers most automotive starter and auxiliary batteries
- Tests common battery types such as lead-acid, AGM, AGM spiral, and gel types
- Provides deterministic data for battery health (SOH), charge status (SOC), CCA, and impedance
In real world scenarios, you can use BT300 for quick roadside checks, pre-service planning, or garage diagnostics. The device guides you to select the correct battery type or CCA value, and results appear in about 10 seconds when used with proper inputs.
Cranking and charging diagnostics
- Cranking test reveals starting system readiness and battery status during engine start
- Charging test shows how the alternator performs while the engine runs
- Software update via USB keeps the BT300 current with new features and improved compatibility
The BT300 is compatible with a wide range of 12V and 24V vehicles, including cars, trucks, buses, diesel engines, motorcycles, boats, RVs, and more. A clear backlit LCD and simple one-button operation make the tool approachable for professionals and hobbyists alike.
Power, language and updates
- The BT300 is powered by the vehicle battery during use and is not rechargeable on its own
- USB is reserved for firmware/software updates only, not charging
- Software supports multiple languages and can be updated to access the latest features
With thoughtful design and practical diagnostics, the BT300 helps you plan maintenance with confidence, selecting realistic scenarios based on your vehicle type and battery configuration. It is a capable partner for everyday vehicle care without overpromising results.
FAQ
Q: What devices can BT300 test?
A: BT300 supports 12V/24V vehicles and tests battery health, charge status, CCA, and impedance, plus starting and charging conditions.
Q: How is the BT300 powered and updated?
A: The unit runs when connected to the vehicle battery; USB is for software updates only, not charging.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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