{"title":"Battery Monitors and Voltmeters","description":"\u003cp\u003eKeep an eye on your 12V battery with a voltmeter or Bluetooth battery monitor.\u003c\/p\u003e","products":[{"product_id":"mini-round-waterproof-voltmeter","title":"Round Waterproof Voltmeter","description":"\u003cp\u003eA compact, panel-mount voltage gauge for 5V to 48V systems. It's waterproof, so it suits cars, motorbikes, 4x4s, boats and campers alike.\u003c\/p\u003e\u003ch3\u003eWhy it works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal compatibility\u003c\/strong\u003e: Suitable for 12V and 24V systems in vehicles, boats, and off-grid setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast installation\u003c\/strong\u003e: Twist-and-lock mounting with secure retaining nut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear LED display\u003c\/strong\u003e: Available in multiple colours for visibility and personal preference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide measuring range\u003c\/strong\u003e: Monitors voltages from 5V to 48V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction\u003c\/strong\u003e: Waterproof, flame retardant, and built for harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-time monitoring\u003c\/strong\u003e: Track battery charge\/discharge status with reverse-polarity protection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x Round Waterproof Voltmeter\u003c\/li\u003e\n\u003cli\u003e1 x Retaining Nut\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow it works\u003c\/h3\u003e\u003cp\u003eThis voltmeter fits into a round panel cutout and locks in place using a twist-and-lock system with a nylon retaining nut. Once connected to the vehicle's power supply, the 3-digit LED display provides accurate, real-time voltage readings. Its waterproof and flame-retardant housing ensures reliable operation across automotive, marine, and off-road environments.\u003c\/p\u003e\u003ch3\u003eWhat it suits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWorks with 5V-48V DC systems\u003c\/li\u003e\n\u003cli\u003eIdeal for cars, motorbikes, boats, ATVs, UTVs, caravans, campers, and trailers\u003c\/li\u003e\n\u003cli\u003eSupports both 12V and 24V battery monitoring\u003c\/li\u003e\n\u003cli\u003eSuitable for dashboards, switch panels, control pods, and marine consoles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitting it\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: 1\/5 (Easy).\u003c\/strong\u003e Mount in a round cutout, secure with the retaining nut, and connect positive and negative terminals.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWaterproof and flame-retardant housing\u003c\/li\u003e\n\u003cli\u003e3-digit LED display\u003c\/li\u003e\n\u003cli\u003eOptional LED colours: red, white, blue, green, orange\u003c\/li\u003e\n\u003cli\u003eReverse-connection protection\u003c\/li\u003e\n\u003cli\u003eCompact panel-mount design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e5V-48V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Diameter\u003c\/td\u003e\n\u003ctd\u003eApprox 36MM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eWaterproof, Flame-Retardant Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eLED (3-digit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Colours\u003c\/td\u003e\n\u003ctd\u003eRed, White, Blue, Green, Orange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003eAnode \/ Cathode Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"TREKLO","offers":[{"title":"Red","offer_id":46558177362095,"sku":"volt-round-red","price":16.7,"currency_code":"AUD","in_stock":true},{"title":"White","offer_id":46558177394863,"sku":"volt-round-white","price":16.7,"currency_code":"AUD","in_stock":true},{"title":"Blue","offer_id":46558177427631,"sku":"volt-round-blue","price":16.7,"currency_code":"AUD","in_stock":true},{"title":"Green","offer_id":46558177460399,"sku":"volt-round-green","price":16.7,"currency_code":"AUD","in_stock":true},{"title":"Orange","offer_id":46558177493167,"sku":"volt-round-orange","price":16.7,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/6269\/2783\/files\/round-waterproof-voltmeter.jpg?v=1770860330"},{"product_id":"battery-monitor-bm2-bluetooth-4-0-for-12v-batteries","title":"Battery Monitor BM2 Bluetooth 4.0 for 12V Batteries","description":"\u003cp\u003eThe BM2 clips onto your 12V battery and sends its condition to your phone over Bluetooth. Works with AGM, GEL and wet cell batteries, with live status, history and alerts in the app.\u003c\/p\u003e\u003ch3\u003eWhy it works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-time voltage monitoring\u003c\/strong\u003e: Stay updated on battery health at a glance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Bluetooth alerts\u003c\/strong\u003e: Receive abnormalities directly to your phone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking and charging checks\u003c\/strong\u003e: Automatically assesses alternator and start performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e31-day history tracking\u003c\/strong\u003e: View long-term data for system insights.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReverse-connection protection\u003c\/strong\u003e: Prevents wiring mistakes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation\u003c\/strong\u003e: Simple two-wire connection to battery terminals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 x Battery Monitor BM2 Bluetooth 4.0\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eHow it works\u003c\/h3\u003e\u003cp\u003eThe BM2 installs directly onto your battery terminals and pairs with your smartphone via Bluetooth 4.0. The free BM2 app displays real-time voltage, cranking performance, alternator charging status, historical graphs, and usage logs. When your phone comes back into Bluetooth range, data automatically syncs and alerts trigger instantly.\u003c\/p\u003e\u003ch3\u003eWhat it suits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWorks with 12V AGM, GEL, and WETCELL batteries\u003c\/li\u003e\n\u003cli\u003eSuitable for campervans, caravans, 4WDs, RVs, boats, and auxiliary power systems\u003c\/li\u003e\n\u003cli\u003eApp compatible with iOS 7.1+ and Android 4.3+\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitting it\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: 1\/5 (Easy).\u003c\/strong\u003e Simple two-wire install directly onto the battery.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBluetooth 4.0 wireless monitoring\u003c\/li\u003e\n\u003cli\u003eSmart alert notifications\u003c\/li\u003e\n\u003cli\u003eAutomatic cranking and charging evaluation\u003c\/li\u003e\n\u003cli\u003e31-day data history\u003c\/li\u003e\n\u003cli\u003eReverse-polarity protection\u003c\/li\u003e\n\u003cli\u003eFree BM2 smartphone app\u003c\/li\u003e\n\u003cli\u003eHands-off monitoring once installed\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e9-16V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth Version\u003c\/td\u003e\n\u003ctd\u003e4.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp Compatibility\u003c\/td\u003e\n\u003ctd\u003eiOS \u0026amp; Android\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Storage\u003c\/td\u003e\n\u003ctd\u003e31 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eBattery terminal leads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Type\u003c\/td\u003e\n\u003ctd\u003e12V systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"TREKLO","offers":[{"title":"Default Title","offer_id":46558177525935,"sku":"CVB-BT-BM2","price":39.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/6269\/2783\/files\/bm2-battery-monitor-bluetooth-12v.jpg?v=1770860331"},{"product_id":"digital-voltage-display","title":"Digital Voltage Display","description":"\u003cp\u003eA compact voltage meter for DC systems from 3V to 30V. The LED screen is easy to read and comes with red, blue or green backlighting.\u003c\/p\u003e\u003ch3\u003eWhy it works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTri-colour LED display\u003c\/strong\u003e: Choose red, blue, or green for visibility or preference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate readings\u003c\/strong\u003e: Stable measurement performance for consistent voltage monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser-friendly design\u003c\/strong\u003e: Clear LED digits and adjustable trimmer potentiometer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple installation\u003c\/strong\u003e: Two-wire connection for fast setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable housing\u003c\/strong\u003e: Splash-resistant body suitable for workshop and hobby use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 x Digital Voltage Display (chosen backlight colour)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eHow it works\u003c\/h3\u003e\u003cp\u003eThis digital voltmeter uses a capacitance step-down design tailored for household and DC measurement applications. The LED display provides high-contrast visibility, while the built-in trimmer potentiometer allows you to fine-tune calibration. With a two-wire input, installation is straightforward for both beginners and experienced users.\u003c\/p\u003e\u003ch3\u003eWhat it suits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for DC 3V-30V measurement\u003c\/li\u003e\n\u003cli\u003eIdeal for DIY projects, home energy monitoring, and low-voltage testing\u003c\/li\u003e\n\u003cli\u003eWorks with electronics benches, battery packs, educational setups, and hobby circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitting it\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: 1\/5 (Easy).\u003c\/strong\u003e Connect the two input wires to the voltage source and mount the display in your preferred location.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLED display with red, blue, or green backlight\u003c\/li\u003e\n\u003cli\u003eCapacitance step-down measurement design\u003c\/li\u003e\n\u003cli\u003eWaterproof casing for splash resistance\u003c\/li\u003e\n\u003cli\u003eTwo-wire input\u003c\/li\u003e\n\u003cli\u003eAdjustable calibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003eDC 3V-30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eLED (Tri-Colour Options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Wires\u003c\/td\u003e\n\u003ctd\u003eTwo-Wire Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eWaterproof \/ Splash-Resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eTrimmer Potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"TREKLO","offers":[{"title":"Blue","offer_id":46558177558703,"sku":"volt-rectangle-blue","price":14.9,"currency_code":"AUD","in_stock":true},{"title":"Red","offer_id":46558177591471,"sku":"volt-rectangle-red","price":14.9,"currency_code":"AUD","in_stock":true},{"title":"Green","offer_id":46558177624239,"sku":"volt-rectangle-green","price":14.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/6269\/2783\/files\/digital-voltage-display.jpg?v=1770860333"}],"url":"https:\/\/treklo.com.au\/collections\/battery-monitors-and-voltmeters.oembed","provider":"TREKLO AUSTRALIA","version":"1.0","type":"link"}