{"product_id":"foxwell-12v-car-battery-tester-bt301-upgraded-bt100-with-2-8-color-screen-and-6-5-ft-cable","title":"FOXWELL 12V Car Battery Tester BT301 — Upgraded BT100 with 2.8\" Color Screen and 6.5 ft Cable","description":"\u003cstrong\u003eFOXWELL BT301 is a compact 12V battery tester that quickly diagnoses battery health, cranking performance, and alternator charging with near-professional accuracy.\u003c\/strong\u003e\n\n\u003cp\u003eWhether you’re a weekend mechanic, fleet owner, or DIY vehicle enthusiast, the BT301 gives fast pass\/fail style information plus detailed metrics so you can decide whether a battery needs charging, reconditioning, or replacement. This upgraded model expands on the BT100 with a longer cable, a brighter color screen, and support for common 12V lead-acid chemistries used across cars, trucks, boats, ATVs and lawn equipment.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the BT301 tell me if a battery is still good?\u003c\/h3\u003e\n\u003cp\u003eThe tester measures state-of-health (SOH), state-of-charge (SOC) and cold cranking amps (CCA) by applying a controlled load and reading voltage and current response. An intelligent processor interprets those readings and displays a clear result so you don’t need to guess about remaining life or performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSOH and SOC readouts to assess remaining capacity and charge level\u003c\/li\u003e\n  \u003cli\u003eCCA comparison to rated battery specifications for cold-start capability\u003c\/li\u003e\n  \u003cli\u003eFast load test that replicates real-world cranking conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan it check my starter and alternator too?\u003c\/h3\u003e\n\u003cp\u003eYes — the BT301 runs cranking tests to evaluate starter performance and performs charging system checks for alternator output and regulation. These checks identify weak cranking, voltage drops, or poor charging that can mimic battery failure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCranking test measures voltage under starter load to reveal weak starters or bad connections\u003c\/li\u003e\n  \u003cli\u003eAlternator test monitors voltage at idle and under load to detect under- or over-charging\u003c\/li\u003e\n  \u003cli\u003eOn-screen guidance helps interpret each result and suggests next steps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and battery types work with the BT301?\u003c\/h3\u003e\n\u003cp\u003eThe BT301 supports most 12V lead-acid battery types found in everyday vehicles and equipment, making it a versatile shop or garage tool. It is not designed for lithium chemistry batteries.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with flooded (wet), AGM (flat \u0026amp; spiral), EFB and GEL 12V batteries\u003c\/li\u003e\n  \u003cli\u003eSuitable for cars, SUVs, trucks, motorcycles, boats, RVs, ATVs, UTVs and lawn equipment\u003c\/li\u003e\n  \u003cli\u003eNot for lithium batteries — confirm battery type before testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to use the BT301 during routine maintenance?\u003c\/h3\u003e\n\u003cp\u003eThe BT301 is built for straightforward, single-operator testing: attach the heavy-duty clamps, follow on-screen prompts and read results on the bright 2.8\" color display. A longer 6.5-foot cable lets you remain inside the vehicle while testing, improving safety and convenience.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e6.5 ft cable gives flexible reach from the driver’s seat or cramped engine bays\u003c\/li\u003e\n  \u003cli\u003e2.8\" color screen for clear daytime and low-light readability\u003c\/li\u003e\n  \u003cli\u003eReverse-polarity and insulated clamps for safe operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The FOXWELL BT301 is ideal for home mechanics, professional technicians, fleet operators and anyone who needs fast, reliable battery and charging-system information without repeated shop visits. If you maintain multiple vehicles, manage seasonal equipment, or want a pre-trip diagnostic tool, the BT301 delivers shop-level diagnostics in a compact, durable package.\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: Is the BT301 safe to use on my vehicle battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It has reverse-polarity protection, insulated clamps, and is powered by the battery under test, so no external power is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the BT301 test lithium batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The BT301 is designed for 12V lead-acid chemistries like flooded, AGM, EFB, and GEL only.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FOXWELL","offers":[{"title":"Default Title","offer_id":48080804446366,"sku":"B0DDSQ8QPR","price":109.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/foxwell-bt301-front-display.jpg?v=1785788209","url":"https:\/\/northtrailauto.ca\/products\/foxwell-12v-car-battery-tester-bt301-upgraded-bt100-with-2-8-color-screen-and-6-5-ft-cable","provider":"North Trail Auto","version":"1.0","type":"link"}