{"product_id":"vdiagtool-bt300-car-battery-tester-6v-12v-5-3000-cca-with-2-8-color-display-starter-alternator-diagnostic","title":"VDIAGTOOL BT300 Car Battery Tester 6V\/12V 5–3000 CCA with 2.8\" Color Display — Starter \u0026 Alternator Diagnostic","description":"\u003cp\u003e\u003cstrong\u003eThe VDIAGTOOL BT300 is a compact professional battery and charging system tester that checks 6V\/12V lead-acid batteries, performs CCA load tests, and verifies starter\/alternator performance before roadside failure.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeep vehicle power problems from turning into costly breakdowns: the BT300 combines voltage, internal resistance, state-of-charge (SOC), state-of-health (SOH), and CCA diagnostics with cranking and charging tests so you can make informed service decisions on cars, trucks, motorcycles, ATVs and boats. Its broad 5–3000 CCA range and clear 2.8\" color display deliver quick, actionable results whether the battery is in the vehicle or removed.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly does the BT300 deliver a battery diagnosis?\u003c\/h3\u003e\n\u003cp\u003eThe BT300 runs a complete routine in seconds, presenting voltage, internal resistance, SOC\/SOH and CCA assessments instantly on the high-contrast screen. One-touch test and review modes speed up inspections for fleet work or DIY maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFull diagnostic report in under a minute\u003c\/li\u003e\n  \u003cli\u003e2.8\" HD TFT display for fast reading\u003c\/li\u003e\n  \u003cli\u003eOne-touch waveform and result recall\u003c\/li\u003e\n  \u003cli\u003eLED health indicators: green, yellow, red\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich batteries and vehicles are compatible with this tester?\u003c\/h3\u003e\n\u003cp\u003eThe BT300 supports most lead-acid battery types, including VRLA\/SLA, AGM and gel, across 6V and 12V systems with adjustable CCA settings for accurate matching. It is not intended for lithium or deep-cycle golf-cart batteries, so verify chemistry before testing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with 6V and 12V lead-acid batteries\u003c\/li\u003e\n  \u003cli\u003eAdjustable for 5–3000 CCA range\u003c\/li\u003e\n  \u003cli\u003eSuitable for cars, trucks, motorcycles, SUVs, ATVs and boats\u003c\/li\u003e\n  \u003cli\u003eNot compatible with lithium or deep-cycle golf-cart batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat additional vehicle electrical checks can the BT300 perform?\u003c\/h3\u003e\n\u003cp\u003eBeyond battery health, this tool performs cranking tests to assess starter performance and charging tests to evaluate alternator output, helping differentiate battery faults from charging-system issues. The tester displays voltage waveforms so you can see transient behavior during tests.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCranking test for starter motor evaluation\u003c\/li\u003e\n  \u003cli\u003eCharging test to detect overcharge or undercharge conditions\u003c\/li\u003e\n  \u003cli\u003eReal-time voltage waveform monitoring\u003c\/li\u003e\n  \u003cli\u003eActionable advice: recharge or replace recommendations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow accurate and practical is the BT300 for workshop or roadside use?\u003c\/h3\u003e\n\u003cp\u003eDesigned for professionals and serious enthusiasts, the BT300 offers lab-grade precision and practical features for fast decision-making. Rugged clamps, clear visual cues, and optional PC connectivity for report printing make it useful both in a busy shop and for field diagnostics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReported 99.99% test precision for consistent results\u003c\/li\u003e\n  \u003cli\u003eRobust alligator clamps and durable housing for shop use\u003c\/li\u003e\n  \u003cli\u003ePC connection for printing diagnostic reports\u003c\/li\u003e\n  \u003cli\u003eCompact, portable form factor for roadside checks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: technicians, fleet managers, and vehicle owners who want a single tester that identifies failing batteries and separates charging-system faults from battery problems. If you service multiple vehicle types or need fast, repeatable battery health and starter\/alternator checks, the VDIAGTOOL BT300 provides the data and clarity to act confidently without guesswork.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the BT300 test lithium batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The BT300 is built for 6V and 12V lead-acid batteries (VRLA\/AGM\/GEL) and is not compatible with lithium battery chemistries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the tester check my alternator?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The BT300 performs charging tests to assess alternator output and detect overcharging or undercharging conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"VDIAGTOOL","offers":[{"title":"Default Title","offer_id":48086674997406,"sku":"B0CR6DT7RS","price":64.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/vdiagtool-bt300-front-display.jpg?v=1785902007","url":"https:\/\/northtrailauto.ca\/products\/vdiagtool-bt300-car-battery-tester-6v-12v-5-3000-cca-with-2-8-color-display-starter-alternator-diagnostic","provider":"North Trail Auto","version":"1.0","type":"link"}