{"title":"Voltage Sensitive Relays","description":"","products":[{"product_id":"kickass-12v-smart-battery-guard-vsr-lvd-in-1","title":"KickAss 12V Smart Battery Guard (VSR \u0026 LVD in One)","description":"\u003cp\u003e\u003cstrong\u003eKickAss 12V Battery Guard\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe KickAss Battery Guard can disconnect any non-essential loads from the battery (Low Voltage Disconnect). Or it can be set as a Voltage Sensitive Relay (VSR) and connect the main battery to the auxiliary battery. Fully customisable Bluetooth app, manual override switch, LED diagnostics mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSet As Low Voltage Disconnect or Voltage Sensitive Relay\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eHave the flexibility to set the battery guard to suit your needs. Set the Battery Guard as a Low Voltage Disconnect (LVD) or a Voltage Sensitive Relay (VSR). If upgrading your vehicle and no longer need a VSR, simply change the functionality via the app.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBattery Guard – Low Voltage Disconnect\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eProtect your battery from accidental over-discharge. Simply install the device onto your auxiliary battery, set the voltage, and once it reaches the threshold it will disconnect all loads—preventing battery damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBattery Guard – Voltage Sensitive Relay\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eAllows both your main and auxiliary batteries to charge at the same time from your alternator. Ideal for vehicles without smart alternators.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFully Customisable Settings Within Bluetooth App\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eControl and configure all battery guard preferences via the Bluetooth app. Easily set the unit to operate as a VSR or LVD.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSet Cut-In\/Out Voltages \u0026amp; Timeout\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eManual override via app—great for emergencies. Set the delay before the guard disconnects below cut-out voltage. Ideal for high-load applications like inverters, where voltage may momentarily dip.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eManual Override Switch\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eGet full manual control via a dashboard-mounted override switch. Perfect for jump-starting your main battery from your auxiliary battery.\u003c\/p\u003e\n\n\u003cp\u003ePlease check your battery specifications before attempting to jump-start.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLED Diagnostics\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eGet status updates via LED pulses:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 short green pulse every 4 seconds – Battery voltage is above cut-in; Battery Guard is engaged\u003c\/li\u003e\n  \u003cli\u003e1 short blue pulse every 4 seconds – Voltage is below cut-out; waiting for timeout before disconnect\u003c\/li\u003e\n  \u003cli\u003e1 short red pulse every 4 seconds – Voltage is below cut-out; Battery Guard is disengaged\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003e100A Continuous Max Discharge\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSupports up to 100A continuous discharge (300A peak). Suitable for all common 12V setups. Maximum inverter size: 1200W.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEasy Installation\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMounts directly to the battery terminal—no extra cabling or mounting hardware required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSafe for High Temperature Use\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThoroughly tested for high-temperature environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: If used in a KickAss Battery Box as an LVD, the override switch must be used to resume charging after disconnect.\u003c\/em\u003e\u003c\/p\u003e","brand":"KickAss Products","offers":[{"title":"Default Title","offer_id":63327600574833,"sku":"KASMARTBG","price":112.23,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0490\/9190\/3642\/files\/KASMARTBG_2ca2c7c7-b104-4125-8c1d-b632baf8a661.jpg?v=1774409549"},{"product_id":"kickass-quick-connection-dual-sensing-vsr","title":"KickAss Quick Connect Dual Sensing VSR","description":"\u003cp\u003e\u003cstrong\u003eThe KICKASS team have done it again! A new design in Voltage Sensitive Relays unlike anything currently on the market!\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis product is a unique dual-sensing VSR for charging an auxiliary battery system while ensuring that your vehicle's starter battery is isolated when there is no charge from the alternator. Quick-connect Anderson-style plugs allow for easy installation—no hard wiring needed. Side-moulded mounting points offer flexible installation, whether under the bonnet or elsewhere in your 4WD, caravan, or camper. The unit is also water-resistant and suitable for marine applications.\u003c\/p\u003e\n\n\u003cp\u003eThe dual-sensing function intelligently detects the charge of both the auxiliary and cranking batteries, allowing current to flow back when the start battery is low or when an external charger (such as AC or solar) is connected to the auxiliary battery.\u003c\/p\u003e\n\n\u003cp\u003eThe VSR also features an override switch—ideal for emergencies when your cranking battery is discharged and you need to transfer charge from your auxiliary battery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Basics on How It Works\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen the vehicle's engine is running, the alternator charges the start battery. Once the start battery reaches 13.2V, the VSR connects both batteries, allowing them to charge simultaneously.\u003c\/p\u003e\n\n\u003cp\u003eWhen the engine is off and charging stops, the start battery voltage drops. Once it falls below 12.8V, the VSR disconnects the batteries, preventing the auxiliary battery from draining the starter battery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEasy connection via input and output Anderson-style plugs\u003c\/li\u003e\n  \u003cli\u003eCharge your auxiliary battery without discharging the start battery\u003c\/li\u003e\n  \u003cli\u003eProtects electronics on the auxiliary circuit from engine start-up spikes\u003c\/li\u003e\n  \u003cli\u003eFully automatic operation\u003c\/li\u003e\n  \u003cli\u003eOverride switch (engages relay regardless of sense voltage)\u003c\/li\u003e\n  \u003cli\u003eIndication light wire (active when VSR is engaged)\u003c\/li\u003e\n  \u003cli\u003eOverride wire (activated by positive ignition feed)\u003c\/li\u003e\n  \u003cli\u003eDual sensing (monitors both start and auxiliary battery voltage)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KickAss Products","offers":[{"title":"Default Title","offer_id":63327650316657,"sku":"KAVSR2AND","price":51.78,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0490\/9190\/3642\/files\/kickass-quick-connection-dual-sensing-vsr-327897.jpg?v=1774410175"},{"product_id":"kickass-12-volt-140-amp-dual-sensing-voltage-sensitive-relay-vsr","title":"KickAss 12V 140A Dual Sensing Voltage Sensitive Relay (VSR)","description":"\u003cp\u003eFeaturing a massive 140 Amp current rating, the KICKASS advanced Voltage Sensitive Relay (VSR) with override is a specially designed battery isolator with the intelligent ability to sense both start and auxiliary battery voltages. This allows it to engage or isolate depending on each battery's voltage level. A major advantage of this dual-sensing VSR is that when the auxiliary battery is being charged by solar or an AC battery charger and it rises above 13.2V, the VSR will engage and charge the starting battery as well.\u003c\/p\u003e\n\u003cp\u003eIn normal operation, the VSR engages when the engine is running and the start battery reaches 13.2V. This connects the start and auxiliary batteries, enabling your alternator to charge both simultaneously. When the engine is off, there's no charge from the alternator, and the voltage drops. Once the voltage reaches 12.8V, the VSR disconnects the auxiliary battery, meaning the auxiliary battery cannot drain the start battery.\u003c\/p\u003e\n\u003cp\u003eAn integrated manual override switch allows you to manually connect the start and auxiliary batteries. This is useful when the start battery is low and the auxiliary battery has sufficient charge. Note: The manual override should not be used for instant starting as the start battery will take time to charge.\u003c\/p\u003e\n\u003cp\u003eA remote switch can also be wired to use the same override feature.\u003c\/p\u003e\n\u003cp\u003eThe KICKASS premium VSR features a hermetically sealed tough case to resist weather and corrosion, making it ideal for 4WD, marine, truck, and industrial applications. It can be easily surface-mounted on the firewall or elsewhere, with convenient cable entry and exit points.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCharge your auxiliary battery without the risk of discharging your start battery\u003c\/li\u003e\n\u003cli\u003eProtects electronics on auxiliary battery circuit from engine startup spikes\u003c\/li\u003e\n\u003cli\u003eFully automatic operation\u003c\/li\u003e\n\u003cli\u003eOverride switch (engages relay regardless of sense voltage)\u003c\/li\u003e\n\u003cli\u003eIndication light wire (activates when VSR is engaged)\u003c\/li\u003e\n\u003cli\u003eOverride wire (activated by positive feed for optional remote operation)\u003c\/li\u003e\n\u003cli\u003eDual sensing – detects voltage of both start and auxiliary batteries\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KickAss Products","offers":[{"title":"Default Title","offer_id":63327653265777,"sku":"KAVSROVER","price":43.14,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0490\/9190\/3642\/files\/kickass-12-volt-140-amp-dual-sensing-voltage-sensitive-relay-vsr-898172.jpg?v=1774410247"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0490\/9190\/3642\/collections\/kickass-quick-connection-dual-sensing-vsr-326449.jpg?v=1774827900","url":"https:\/\/kickassproducts.com\/collections\/voltage-sensitive-relays.oembed","provider":"KickAss Products USA","version":"1.0","type":"link"}