{"product_id":"charge-guard-select-vehicle-power-timer-switch-battery-protection","title":"Charge guard-Select Vehicle Power Timer Switch - Battery Protection","description":"\u003cp\u003eIn this review the Charge guard-Select proves itself as a practical vehicle power management device for anyone who runs radios, mobile data terminals, laptops or other mobile electronics from a 12 volt system. The single biggest reason to buy is straightforward: it prevents dead batteries by automatically disconnecting equipment on a programmable timer while still allowing devices to come on with vehicle start, a balance many fleet and emergency vehicle operators need. The reviewer found the unit simple to wire to a battery or ignition circuit and appreciated the clear LED indication for under and over voltage conditions.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic on\/off timer:\u003c\/strong\u003e Turns mobile equipment on with the vehicle and shuts it off after a selectable delay to avoid draining the battery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable timeout delay:\u003c\/strong\u003e Offers flexible delay settings so equipment can remain powered from 5 seconds up to indefinitely based on the chosen program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 volt ignition sensing:\u003c\/strong\u003e Works with 12 volt negative ground systems commonly found in cars, trucks and emergency vehicles for reliable trigger sensing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage protection and LED indicators:\u003c\/strong\u003e Built-in LED shows under and over voltage conditions so users can quickly identify voltage anomalies affecting connected equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtects mobile electronics:\u003c\/strong\u003e Prevents damage to radios, laptops and data terminals by disconnecting them from abnormal voltages and preventing prolonged low-voltage exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-contained circuit protection:\u003c\/strong\u003e The compact unit provides protection without requiring additional external modules, simplifying installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Charge guard-Select is best for fleet managers, service technicians, first responders and any vehicle operator who needs dependable power management for radios, mobile data terminals, laptops and similar devices. It is aimed at users who want to avoid dead batteries while still allowing devices to operate automatically with vehicle start.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include people with non-standard vehicle electrical systems that are not 12 volt negative ground or users who need integrated multi-circuit management beyond a single self-contained timer switch; for complex multi-device power distribution a dedicated power management system may be more suitable.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReliable automatic timer that prevents battery drain while allowing devices to power with engine start.\u003c\/li\u003e\n\u003cli\u003eSelectable timeout from 5 seconds to indefinite offers flexibility for different workflows and equipment.\u003c\/li\u003e\n\u003cli\u003eClear LED indications for under and over voltage help troubleshoot electrical issues quickly.\u003c\/li\u003e\n\u003cli\u003eSimple wiring to battery or ignition reduces installation complexity for typical vehicle setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLimited to 12 volt negative ground systems, so it is not suitable for vehicles with different grounding or voltage architectures.\u003c\/li\u003e\n\u003cli\u003eThe unit is a single-circuit solution and does not replace a multi-circuit power distribution system for complex installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eCharge guard-Select CG.X automatic timer switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e12 volt negative ground sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimer delay\u003c\/td\u003e\n\u003ctd\u003eSelectable 5 seconds to infinity (pre-programmed two hour default)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing modes\u003c\/td\u003e\n\u003ctd\u003eIgnition sensing and automatic detection mode (AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eCircuit protection for vehicle power and mobile electronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicators\u003c\/td\u003e\n\u003ctd\u003eLED for under and over voltage conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Charge guard-Select is a solid, practical choice for anyone needing simple, reliable vehicle power management to protect batteries and mobile electronics. It offers flexible timer programming, clear voltage indicators and straightforward wiring, making it good value for fleets, emergency vehicles and technicians who want to avoid dead batteries without installing complex systems.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan I wire the Charge guard-Select directly to the battery?\u003c\/strong\u003e\u003cbr\u003eYes, the unit is designed to wire directly to the battery or to the ignition switch in a 12 volt negative ground vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the default timer setting out of the box?\u003c\/strong\u003e\u003cbr\u003eThe device ships pre-programmed with a two hour delay as the default timeout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it protect my radio and laptop from voltage spikes?\u003c\/strong\u003e\u003cbr\u003eThe Charge guard-Select provides protection from under and over voltage conditions and helps prevent prolonged low-voltage exposure, protecting connected mobile electronics.\u003c\/p\u003e","brand":"Havis","offers":[{"title":"Default Title","offer_id":48160276381915,"sku":"B00B62LFNM","price":87.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71-F4BLYDTL._AC_SL1500.jpg?v=1768710169","url":"https:\/\/gearmusthave.com\/products\/charge-guard-select-vehicle-power-timer-switch-battery-protection","provider":"GearMustHave","version":"1.0","type":"link"}