{"product_id":"foxwell-bt705-car-battery-alternator-tester-12v-24v-2-8-display-cca-soh-readouts","title":"FOXWELL BT705 Car Battery \u0026 Alternator Tester 12V\/24V - 2.8\" Display, CCA\/SOH Readouts","description":"\u003cb\u003eThe FOXWELL BT705 is a guided handheld battery and charging system tester that evaluates 12V and 24V lead-acid batteries, alternator output and starting performance with clear GOOD\/RECHARGE\/REPLACE results.\u003c\/b\u003e\n\n\u003cp\u003eThe BT705 combines a readable 2.8-inch display, guided testing prompts and durable hardware to give both DIYers and technicians reliable battery diagnostics. It measures cold cranking amps (CCA), voltage, internal resistance and state-of-health (SOH), records cranking voltage\/time during engine start, and supports Flooded, AGM, GEL and EFB batteries across 100–2000 CCA. The unit was used in Project Farm’s 2026 battery comparison for consistent, repeatable readings and ships with a protective case and heavy-duty clamps.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the BT705 tell me if a battery needs replacement?\u003c\/h3\u003e\n\u003cp\u003eThe tester runs a load-style diagnostic and tallies results into an easy-to-read verdict: GOOD, RECHARGE or REPLACE. It compares measured CCA and internal resistance to expected values for the battery’s rating and temperature, so the decision is based on standardized thresholds rather than guesswork.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDisplays CCA, voltage and SOH for quick interpretation\u003c\/li\u003e\n  \u003cli\u003eAccounts for temperature during 32°F (0°C) tests\u003c\/li\u003e\n  \u003cli\u003eSummarizes outcomes so non-experts can act confidently\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I test both my car and my truck or RV with this tool?\u003c\/h3\u003e\n\u003cp\u003eYes — the BT705 supports 12V and 24V systems and a wide CCA range (100–2000), making it suitable for passenger cars, pickups, commercial trucks, RVs and marine lead-acid batteries. It also handles batteries used in start-stop systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Flooded, AGM, GEL and EFB lead-acid batteries\u003c\/li\u003e\n  \u003cli\u003e12V and 24V system testing for multiple vehicle classes\u003c\/li\u003e\n  \u003cli\u003eUseful for fleet, marine and recreational vehicle maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat information will I see during a cranking or alternator test?\u003c\/h3\u003e\n\u003cp\u003eDuring engine cranking the BT705 records cranking voltage and cranking time so you can assess starter performance alongside battery condition. For charging checks it measures alternator output and charging stability, flagging unusually low or fluctuating voltages that could indicate charging-system problems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCranking voltage and duration captured while starting\u003c\/li\u003e\n  \u003cli\u003eAlternator\/charging voltage readout and status prompts\u003c\/li\u003e\n  \u003cli\u003eStep-by-step on-screen instructions for each test type\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow practical is the BT705 for solo testing and repeated use?\u003c\/h3\u003e\n\u003cp\u003eThe BT705 is designed for one-person operation: long test leads reach from the battery to the driver’s seat so you can start the engine while watching the screen. Built with a protective housing, sturdy clamps and a hard carrying case, it’s made to survive workshop use and frequent field checks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e5.9 ft cable allows single-person cranking tests\u003c\/li\u003e\n  \u003cli\u003eDurable clamps and protective housing for daily use\u003c\/li\u003e\n  \u003cli\u003eIncludes hard case for storage and transport\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The FOXWELL BT705 is aimed at home mechanics, independent shops, fleet managers and anyone who needs accurate, repeatable battery and charging system checks without interpreting raw data. It’s especially useful where consistent diagnostics and single-operator testing save time — from multi-vehicle households to professional service bays.\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: Does the BT705 work on 24V truck batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The BT705 supports both 12V and 24V systems and a 100–2000 CCA range for commercial truck batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I test the alternator with this device?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The unit measures charging output and reports alternator voltage and charging status during a charging-system check.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FOXWELL","offers":[{"title":"Default Title","offer_id":67584934609081,"sku":"B01ANF1D7U","price":246.96,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/foxwell-bt705-front-display.jpg?v=1790459724","url":"https:\/\/redleafauto.ca\/products\/foxwell-bt705-car-battery-alternator-tester-12v-24v-2-8-display-cca-soh-readouts","provider":"Redleaf Auto","version":"1.0","type":"link"}