{"id":8042246602821,"title":"Tecmate Optimate Test – Cranking \u0026 Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System OptiMATE TESTER: 12V Cranking \u0026 Alternator test","handle":"tecmate-optimate-test-cranking-alternator-ts-121-12v-tester-for-battery-state-of-charge-cranking-performance-and-vehicle-charging-system-optimate-tester-12v-cranking-alternator-test","description":"\u003ch3\u003eTecmate Optimate Test – Cranking \u0026amp; Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eThe ultimate pocket tester for on-vehicle battery performance \u0026amp; alternator\r\nvoltage testing that every service technician or gear head should have! Easy\r\nto use! Connect clips to the battery or connect to an installed SAE battery\r\nlead, then: 1. Check battery charge level. A low battery cranks (starts\r\nengine) poorly. 2. Start engine. OptiMate TEST records and indicates (for 20\r\nsec) the lowest start volts. 3. With engine running, verify charging voltage\r\nfrom alternator and voltage regulator. TIP: Low charge voltage causes poor\r\nbattery performance. Too high charge voltage causes excessive gassing and will\r\neventually damage a lead-acid battery. Too high charge voltage is FATAL for a\r\nLiFePO4 starter battery! A premium tester designed by TecMate. 3-year limited\r\nreplacement .\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eThe ultimate pocket tester for on-vehicle battery performance \u0026amp; alternator voltage testing with either 12V lead-acid or 12. 8V LiFePO4 starter battery - Easy troubleshooting from cranking to charging!\u003c\/li\u003e\r\n \u003cli\u003eFor vehicles fitted with 12V AGM, GEL and STD lead-acid or 12. 8V LFP \/ LiFePO4 starter battery.\u003c\/li\u003e\r\n \u003cli\u003eAs easy as 1-2-3, connect to battery, check state of charge, start engine tester displays cranking voltage and vehicle charge voltage simultaneously- 15 sec is all you need!\u003c\/li\u003e\r\n \u003cli\u003eDisplay cranking volts down to 6V and charge voltage range up to 15V - Check weak battery or overcharging!\u003c\/li\u003e\r\n \u003cli\u003eEasy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead. ; Verifies charging voltage when engine is running.\u003c\/li\u003e\r\n \u003c\/ul\u003e","published_at":"2026-04-07T17:20:41+10:00","created_at":"2026-04-07T17:20:37+10:00","vendor":"Tecmate","type":"Electrical System Tools","tags":["health_selected_Apr2026"],"price":21800,"price_min":21800,"price_max":21800,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44852113440837,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B0013LH8PK","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Tecmate Optimate Test – Cranking \u0026 Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System OptiMATE TESTER: 12V Cranking \u0026 Alternator test","public_title":null,"options":["Default Title"],"price":21800,"weight":175,"compare_at_price":null,"inventory_management":"shopify","barcode":"TS-121","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/beesactive.com\/cdn\/shop\/files\/B0013LH8PK.jpg?v=1775762807","\/\/beesactive.com\/cdn\/shop\/files\/7167qDGADdL.jpg?v=1775546440","\/\/beesactive.com\/cdn\/shop\/files\/71vWha20TUL.jpg?v=1775546440"],"featured_image":"\/\/beesactive.com\/cdn\/shop\/files\/B0013LH8PK.jpg?v=1775762807","options":["Title"],"media":[{"alt":"Tecmate Optimate Test – Cranking \u0026 Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System OptiMATE TESTER: 12V Cranking \u0026 Alternator test - BeesActive Australia","id":31242566139973,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/beesactive.com\/cdn\/shop\/files\/B0013LH8PK.jpg?v=1775762807"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/beesactive.com\/cdn\/shop\/files\/B0013LH8PK.jpg?v=1775762807","width":1500},{"alt":"Tecmate Optimate Test – Cranking \u0026 Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System OptiMATE TESTER: 12V Cranking \u0026 Alternator test - BeesActive Australia","id":31242566172741,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/beesactive.com\/cdn\/shop\/files\/7167qDGADdL.jpg?v=1775546440"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/beesactive.com\/cdn\/shop\/files\/7167qDGADdL.jpg?v=1775546440","width":1500},{"alt":"Tecmate Optimate Test – Cranking \u0026 Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System OptiMATE TESTER: 12V Cranking \u0026 Alternator test - BeesActive Australia","id":31242566205509,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/beesactive.com\/cdn\/shop\/files\/71vWha20TUL.jpg?v=1775546440"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/beesactive.com\/cdn\/shop\/files\/71vWha20TUL.jpg?v=1775546440","width":1500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eTecmate Optimate Test – Cranking \u0026amp; Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eThe ultimate pocket tester for on-vehicle battery performance \u0026amp; alternator\r\nvoltage testing that every service technician or gear head should have! Easy\r\nto use! Connect clips to the battery or connect to an installed SAE battery\r\nlead, then: 1. Check battery charge level. A low battery cranks (starts\r\nengine) poorly. 2. Start engine. OptiMate TEST records and indicates (for 20\r\nsec) the lowest start volts. 3. With engine running, verify charging voltage\r\nfrom alternator and voltage regulator. TIP: Low charge voltage causes poor\r\nbattery performance. Too high charge voltage causes excessive gassing and will\r\neventually damage a lead-acid battery. Too high charge voltage is FATAL for a\r\nLiFePO4 starter battery! A premium tester designed by TecMate. 3-year limited\r\nreplacement .\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eThe ultimate pocket tester for on-vehicle battery performance \u0026amp; alternator voltage testing with either 12V lead-acid or 12. 8V LiFePO4 starter battery - Easy troubleshooting from cranking to charging!\u003c\/li\u003e\r\n \u003cli\u003eFor vehicles fitted with 12V AGM, GEL and STD lead-acid or 12. 8V LFP \/ LiFePO4 starter battery.\u003c\/li\u003e\r\n \u003cli\u003eAs easy as 1-2-3, connect to battery, check state of charge, start engine tester displays cranking voltage and vehicle charge voltage simultaneously- 15 sec is all you need!\u003c\/li\u003e\r\n \u003cli\u003eDisplay cranking volts down to 6V and charge voltage range up to 15V - Check weak battery or overcharging!\u003c\/li\u003e\r\n \u003cli\u003eEasy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead. ; Verifies charging voltage when engine is running.\u003c\/li\u003e\r\n \u003c\/ul\u003e"}