{"product_id":"4000w-dc-12v-pure-sine-wave-inverter-with-charger","title":"Sun Gold Power 4000W 12V Inverter Charger 120A 12kW Surge","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThis Sun Gold Power 4000W 12V pure sine wave inverter with charger is built for 12V battery setups that need dependable 120V AC power in RVs, trailers, motorhomes, truck campers, and off-grid or backup systems. It is a low-frequency inverter that combines the inverter, built-in battery charger, and automatic transfer switch in one unit, so the power system stays cleaner and easier to manage. When you are running tools, kitchen loads, or the basics in a tight electrical space, an all-in-one inverter charger helps keep the setup organized and predictable.\u003c\/p\u003e\n\u003cp\u003eOn the output side, it delivers pure sine wave 120VAC power with bypass mode, rated for 4000W continuous output. It also provides a surge rating of 12,000W for 20 seconds, giving extra headroom for short start-up events and demanding appliances. Typical transfer time is 10ms, which supports smoother switching between AC input and battery power. Output frequency supports 50Hz or 60Hz, and nominal efficiency is listed as greater than 88%.\u003c\/p\u003e\n\u003cp\u003eFor 12V systems, the DC input specs are clearly defined. Nominal input voltage is 12V with a minimum start voltage of 10V. The low battery alarm range is 10.5V to 11.0V, and the low battery trip range is selectable from 10.0V to 10.5V. High voltage alarm is 16V, and low battery restart voltage is 13V. Idle consumption is 45W, with power saver mode idle consumption at 18W, which helps reduce waste when the inverter is on but loads are light.\u003c\/p\u003e\n\u003cp\u003eCharging is handled by the integrated AC charger with a 120A ±5A charger rate. AC input voltage is 120VAC, with a selectable AC input range of 90–135VAC or 100–135VAC. Charge settings are selectable based on battery type with adjustable charge current from 0% to 100%, and charging follows a 3-step intelligent battery charging method. Overcharge protection shutdown is specified at 15.7V. Control and visibility are straightforward through the LCD display for system monitoring, and remote control plus a BTS cable are included. This unit also supports automatic generator start when battery voltage is low and lets you select AC or battery priority via switch. A GFCI socket is included for enhanced safety.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4000W low-frequency pure sine wave inverter with integrated charger\u003c\/li\u003e\n\u003cli\u003eInverter, battery charger, and AC auto-transfer switch in one unit\u003c\/li\u003e\n\u003cli\u003eAC or battery priority selectable via switch\u003c\/li\u003e\n\u003cli\u003eAutomatic generator start when battery voltage is low\u003c\/li\u003e\n\u003cli\u003eAdjustable charging current from 0% to 100%\u003c\/li\u003e\n\u003cli\u003eSupports 50Hz or 60Hz output frequency\u003c\/li\u003e\n\u003cli\u003eGFCI socket for enhanced safety\u003c\/li\u003e\n\u003cli\u003eLCD display for system monitoring\u003c\/li\u003e\n\u003cli\u003eRemote control and BTS cable included\u003c\/li\u003e\n\u003cli\u003eLow idle current for improved efficiency\u003c\/li\u003e\n\u003cli\u003eSuitable for RV, trailer, motorhome, truck camper, backup, and off-grid use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContinuous output power: 4000W\u003c\/li\u003e\n\u003cli\u003eSurge rating: 12000W, 20 seconds\u003c\/li\u003e\n\u003cli\u003eAC output voltage: 120VAC\u003c\/li\u003e\n\u003cli\u003eAC input voltage: 120VAC\u003c\/li\u003e\n\u003cli\u003eOutput waveform: pure sine wave, bypass mode\u003c\/li\u003e\n\u003cli\u003eTypical transfer time: 10ms\u003c\/li\u003e\n\u003cli\u003eNominal efficiency: greater than 88%\u003c\/li\u003e\n\u003cli\u003eNominal input voltage: 12V\u003c\/li\u003e\n\u003cli\u003eMinimum start voltage: 10V\u003c\/li\u003e\n\u003cli\u003eLow battery alarm: 10.5V–11.0V\u003c\/li\u003e\n\u003cli\u003eLow battery trip: 10.0V–10.5V, selectable\u003c\/li\u003e\n\u003cli\u003eHigh voltage alarm: 16V\u003c\/li\u003e\n\u003cli\u003eLow battery restart voltage: 13V\u003c\/li\u003e\n\u003cli\u003eIdle consumption: 45W\u003c\/li\u003e\n\u003cli\u003ePower saver mode idle consumption: 18W\u003c\/li\u003e\n\u003cli\u003eCharger rate: 120A ±5A\u003c\/li\u003e\n\u003cli\u003eAC input range: 90–135VAC, 100–135VAC selectable\u003c\/li\u003e\n\u003cli\u003eOvercharge protection shutdown: 15.7V\u003c\/li\u003e\n\u003cli\u003eSelectable charge settings based on battery type, adjustable charge current 0%–100%\u003c\/li\u003e\n\u003cli\u003e3-step intelligent battery charging\u003c\/li\u003e\n\u003cli\u003e4000W 12V low-frequency pure sine inverter\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003eBTS cable\u003c\/li\u003e\n\u003cli\u003eUnit weight: 62.2 lb\u003c\/li\u003e\n\u003cli\u003eUnit size: 25.6 × 9.1 × 7.5 inch\u003c\/li\u003e\n\u003cli\u003eShipping weight: 71 lb\u003c\/li\u003e\n\u003cli\u003eShipping size: 30.3 × 13.4 × 12.8 inch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4000W 12V low-frequency pure sine inverter\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003eBTS cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBest For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRV, trailer, motorhome, and truck camper builds needing stable 120VAC pure sine power\u003c\/li\u003e\n\u003cli\u003e12V battery systems that want an all-in-one inverter, charger, and automatic transfer switch\u003c\/li\u003e\n\u003cli\u003eDemanding appliance and tool start-ups needing 12,000W surge capability for 20 seconds\u003c\/li\u003e\n\u003cli\u003eSystems needing 120A ±5A AC charging with 0%–100% adjustable charge current\u003c\/li\u003e\n\u003cli\u003eGenerator-backed builds using automatic generator start when battery voltage is low\u003c\/li\u003e\n\u003cli\u003eInstallations where lower standby draw matters with 18W power saver mode idle consumption\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy This One Makes Sense\u003c\/h2\u003e\n\u003cp\u003eThis inverter charger is a solid fit when you need high-capacity 120VAC power from a 12V battery system and you want the charging and transfer functions built in. You get 4000W continuous pure sine output with bypass mode, plus 12,000W surge for 20 seconds for short start-up events. Typical 10ms transfer time helps keep the system switching sources smoothly, and AC or battery priority selection via switch keeps the operating behavior aligned with how the rig or site is set up. The integrated 120A ±5A charger with selectable AC input range and 0%–100% adjustable charging current supports better control over battery charging, while the 18W power saver idle consumption helps reduce standby waste. Add the included remote control and BTS cable, LCD monitoring, automatic generator start support, and a built-in GFCI socket, and it fits mobile and off-grid systems that need dependable power without extra boxes.\u003c\/p\u003e\n","brand":"Sun Gold Power","offers":[{"title":"Only Inverter","offer_id":51846245318978,"sku":"LFP4K12V120VSG","price":1020.0,"currency_code":"USD","in_stock":true},{"title":"2 X LFP12-200A [5.12KWH]","offer_id":51846245351746,"sku":"LFP4K12V120VSG + LFP12-200A","price":2180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/0984\/6082\/files\/01_9de70a83-5ddc-4747-aada-fe8d5c1ac63a-171920.jpg?v=1768464903","url":"https:\/\/energysystemscentral.com\/products\/4000w-dc-12v-pure-sine-wave-inverter-with-charger","provider":"Energy Systems Central","version":"1.0","type":"link"}