{"product_id":"road-chef-big-bertha-12v-oven-13l-dual-element-caravan-oven","title":"Big Bertha 12V Oven | 13L Dual-Element Caravan Oven","description":"\u003cdiv style=\"font-weight: bold;\"\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e🔥 ROAD CHEF BIG BERTHA 12V OVEN – 13L DUAL-ELEMENT PORTABLE OVEN FOR CARAVANS, 4WDS \u0026amp; TOURING\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eSerious 12V Cooking Capacity with Independent Top \u0026amp; Bottom Heating, 13L Oven Space \u0026amp; Up to 180°C Cooking Temperature\u003c\/h3\u003e\n\u003cp\u003e🍗 When a small 12V oven simply isn't big enough, step up to the Road Chef Big Bertha – a large-capacity 13L portable oven designed for families, extended touring and travellers who want to cook proper meals without relying on 240V mains power or a large inverter.\u003c\/p\u003e\n\u003cp\u003eBig Bertha takes 12V cooking well beyond pies and simple meal reheating. With independent top and bottom heating elements, an adjustable thermostat, temperatures up to approximately 180°C, twin telescopic racks and a deep-dish baking tray, it gives you far greater control over roasting, baking, browning and reheating while travelling.\u003c\/p\u003e\n\u003cp\u003eEach heating element draws approximately 10A \/ 120W at 12V. Run one element when lower power consumption is preferred, or select both elements for a combined maximum of approximately 20A \/ 240W when greater heating performance is required.\u003c\/p\u003e\n\u003cp\u003eBuilt from durable 304 stainless steel and featuring a fully insulated cabinet, double-insulated door, included mounting brackets and an Anderson plug connection, Big Bertha is designed from the ground up for serious caravan, canopy and 4WD cooking.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ KEY FEATURES\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🍗 Massive 13L Cooking Capacity\u003c\/span\u003e\u003cbr\u003eSignificantly more cooking space than a compact 12V oven, giving you room for family meals, roasts, baked dishes, pies, chicken wings and prepared meals.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔥 Independent Top \u0026amp; Bottom Heating\u003c\/span\u003e\u003cbr\u003eSelect the upper element, lower element or both together depending on the type of cooking and browning required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⚡ Up to 240W Combined Heating Power\u003c\/span\u003e\u003cbr\u003eEach element is rated at 120W \/ 10A. With both elements operating, total electrical demand is approximately 240W \/ 20A at 12V.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🌡️ Up to Approximately 180°C\u003c\/span\u003e\u003cbr\u003eAdjustable thermostat control provides useful oven temperatures for roasting, baking, browning and reheating.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⏱️ 2-Hour Countdown Timer\u003c\/span\u003e\u003cbr\u003eThe built-in timer helps manage longer cooking periods and automatically switches the oven off when the selected time has elapsed.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🍽️ Twin Telescopic Cooking Racks\u003c\/span\u003e\u003cbr\u003eTwo removable slide-out racks make loading and removing hot food easier while providing flexible cooking configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🥘 Deep-Dish Baking Tray Included\u003c\/span\u003e\u003cbr\u003eDesigned to hang from the upper rails and promote airflow around the tray, making it particularly useful for marinated meats, chicken wings and wetter foods.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🛡️ Fully Insulated Construction\u003c\/span\u003e\u003cbr\u003eThe insulated body and double-insulated door help retain heat inside the cooking chamber while reducing heat transfer to the surrounding installation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔧 Mounting Brackets Included\u003c\/span\u003e\u003cbr\u003eInstall Big Bertha upright on a shelf or incorporate it into a suitable touring storage or cabinetry system.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔌 Anderson Plug Connection\u003c\/span\u003e\u003cbr\u003eDesigned specifically for a reliable high-current Anderson-style connection rather than a cigarette lighter socket.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🛣️ Built for Touring\u003c\/span\u003e\u003cbr\u003e304 stainless-steel construction and secure mounting options make Big Bertha ideal for caravans, 4WDs, canopies and extended trips.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🍽️ BIG ENOUGH FOR PROPER FAMILY MEALS\u003c\/h3\u003e\n\u003cp\u003eThe standout feature of Big Bertha is its 13-litre cooking capacity.\u003c\/p\u003e\n\u003cp\u003eWhere smaller 12V ovens are often best suited to a couple of pies or a single prepared meal, Big Bertha provides enough internal room to tackle much more substantial cooking.\u003c\/p\u003e\n\u003cp\u003eTypical meals can include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🍗 Chicken portions and wings\u003c\/li\u003e\n\u003cli\u003e🥩 Roasts and slow-cooked meats\u003c\/li\u003e\n\u003cli\u003e🥘 Casseroles and baked meals\u003c\/li\u003e\n\u003cli\u003e🥔 Roast vegetables\u003c\/li\u003e\n\u003cli\u003e🥧 Pies and sausage rolls\u003c\/li\u003e\n\u003cli\u003e🍕 Pizza portions\u003c\/li\u003e\n\u003cli\u003e🍱 Pre-prepared family meals\u003c\/li\u003e\n\u003cli\u003e🥓 Breakfast foods\u003c\/li\u003e\n\u003cli\u003e🍞 Baked and toasted snacks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts larger internal cooking area gives touring families much more flexibility without stepping up to a high-powered 240V appliance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔥 INDEPENDENT TOP \u0026amp; BOTTOM HEATING ELEMENTS\u003c\/h3\u003e\n\u003cp\u003eBig Bertha's dual-element design is one of its biggest advantages over a conventional single-element 12V oven.\u003c\/p\u003e\n\u003cp\u003eYou can select:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔥 Top element only\u003c\/li\u003e\n\u003cli\u003e🔥 Bottom element only\u003c\/li\u003e\n\u003cli\u003e🔥🔥 Top and bottom elements together\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis gives you greater control over how food cooks.\u003c\/p\u003e\n\u003cp\u003eUse bottom heat for general heating and baking, top heat when additional browning is required, or both elements together when you want maximum heating performance and more even heat around the cooking chamber.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ 10A PER ELEMENT – UP TO 20A WITH BOTH ELEMENTS ON\u003c\/h3\u003e\n\u003cp\u003eEach heating element draws approximately 10A at 12V and is rated at 120W.\u003c\/p\u003e\n\u003cp\u003eThis means:\u003c\/p\u003e\n\u003cp\u003eTop Element Only: Approximately 10A \/ 120W\u003c\/p\u003e\n\u003cp\u003eBottom Element Only: Approximately 10A \/ 120W\u003c\/p\u003e\n\u003cp\u003eBoth Elements: Approximately 20A \/ 240W\u003c\/p\u003e\n\u003cp\u003eThe ability to operate one element independently gives you the option of reducing instantaneous electrical demand where full heating power isn't required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: When both elements are operating, the electrical system must comfortably support approximately 20A continuously. Battery capacity, cable size, connector quality and circuit protection all need to be suitable for this load.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔋 HOW MUCH BATTERY POWER DOES BIG BERTHA USE?\u003c\/h3\u003e\n\u003cp\u003eBattery usage depends heavily on whether you operate one heating element or both.\u003c\/p\u003e\n\u003cp\u003eWith one element operating at approximately 10A:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e⏱️ 30 minutes – approximately 5Ah\u003c\/li\u003e\n\u003cli\u003e⏱️ 1 hour – approximately 10Ah\u003c\/li\u003e\n\u003cli\u003e⏱️ 2 hours – approximately 20Ah\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith both elements operating at approximately 20A:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e⏱️ 30 minutes – approximately 10Ah\u003c\/li\u003e\n\u003cli\u003e⏱️ 1 hour – approximately 20Ah\u003c\/li\u003e\n\u003cli\u003e⏱️ 2 hours – approximately 40Ah\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eActual consumption can be lower once the oven reaches operating temperature because the thermostat may cycle the heating elements rather than keeping them energised continuously.\u003c\/p\u003e\n\u003cp\u003eThis flexibility allows you to balance cooking performance against available battery capacity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔋 IDEAL FOR LARGER AUXILIARY BATTERY SYSTEMS\u003c\/h3\u003e\n\u003cp\u003eBig Bertha is particularly well suited to touring vehicles and caravans equipped with a healthy auxiliary battery system.\u003c\/p\u003e\n\u003cp\u003eA properly designed AGM or lithium system can run the oven, but total daily energy use should be considered carefully if you're camping off-grid for extended periods.\u003c\/p\u003e\n\u003cp\u003eFor lithium installations, check that the battery's BMS continuous-discharge capacity comfortably handles the oven's approximate 20A maximum load plus your fridge, lighting, pumps, inverter and any other accessories operating simultaneously.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e☀️ GREAT MATCH FOR SOLAR \u0026amp; DC-DC CHARGING\u003c\/h3\u003e\n\u003cp\u003eIf Big Bertha is going into a serious touring setup, pairing the auxiliary battery with adequate DC-DC and solar charging can make a substantial difference to off-grid usability.\u003c\/p\u003e\n\u003cp\u003eA 25A or 40A DC-DC charger, for example, can help replace the energy used by cooking while you're driving, while solar can continue replenishing the battery when the vehicle is parked.\u003c\/p\u003e\n\u003cp\u003eActual charging performance depends on the charger, alternator, solar conditions, battery state of charge and other loads operating at the same time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔌 ANDERSON PLUG ONLY – BUILT FOR A PROPER HIGH-CURRENT CONNECTION\u003c\/h3\u003e\n\u003cp\u003eBig Bertha uses an Anderson plug connection rather than a cigarette lighter plug.\u003c\/p\u003e\n\u003cp\u003eThis is the right approach for an appliance capable of drawing approximately 20A continuously with both elements operating.\u003c\/p\u003e\n\u003cp\u003eThe wiring recommendation is a minimum 6mm² conductor size.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ Longer cable runs may require a larger conductor to control voltage drop. Cable and fuse selection must suit the actual installation length and circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🌡️ ADJUSTABLE THERMOSTAT – UP TO APPROXIMATELY 180°C\u003c\/h3\u003e\n\u003cp\u003eBig Bertha can reach cooking temperatures up to approximately 180°C, providing genuine oven capability from a 12V electrical system.\u003c\/p\u003e\n\u003cp\u003eThe adjustable thermostat allows the temperature to be matched to different foods rather than simply running the oven at one fixed setting.\u003c\/p\u003e\n\u003cp\u003eThis makes it useful for both slow reheating and higher-temperature roasting or baking applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⏱️ BUILT-IN 2-HOUR TIMER\u003c\/h3\u003e\n\u003cp\u003eThe two-hour countdown timer is particularly useful for longer meals and slow cooking.\u003c\/p\u003e\n\u003cp\u003eSet the required cooking period and the oven automatically switches off once the timer reaches the end of the selected cycle.\u003c\/p\u003e\n\u003cp\u003eThis also helps prevent unnecessary battery consumption if the oven is accidentally left operating longer than intended.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ Automatic shut-off is a convenience feature and does not replace normal supervision or safe food-handling practices.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🍽️ TWO TELESCOPIC SLIDE-OUT COOKING RACKS\u003c\/h3\u003e\n\u003cp\u003eInside Big Bertha are two telescopic slide-out cooking racks that make accessing hot meals easier while giving you multiple cooking configurations.\u003c\/p\u003e\n\u003cp\u003eYou can:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse both racks for multiple smaller meals or trays\u003c\/li\u003e\n\u003cli\u003eRemove one rack to create more vertical cooking room\u003c\/li\u003e\n\u003cli\u003ePosition food higher or lower depending on the heating element being used\u003c\/li\u003e\n\u003cli\u003eConfigure the oven for roasts, casseroles or larger dishes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🥘 DEEP-DISH BAKING TRAY INCLUDED\u003c\/h3\u003e\n\u003cp\u003eBig Bertha includes a deep-dish baking tray designed specifically for the oven.\u003c\/p\u003e\n\u003cp\u003eRather than simply sitting flat on the bottom, the tray can hang from the upper rails so heated air can move around it more effectively.\u003c\/p\u003e\n\u003cp\u003eThis helps promote airflow around the food and is particularly useful when cooking:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🍗 Marinated chicken wings\u003c\/li\u003e\n\u003cli\u003e🥩 Marinated meats\u003c\/li\u003e\n\u003cli\u003e🥘 Wetter baked dishes\u003c\/li\u003e\n\u003cli\u003e🥔 Roasting vegetables\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🛡️ FULLY INSULATED BODY \u0026amp; DOUBLE-INSULATED DOOR\u003c\/h3\u003e\n\u003cp\u003eThe oven cabinet is fully insulated and incorporates a double-insulated door to help retain cooking heat while reducing heat transfer to the outside of the appliance.\u003c\/p\u003e\n\u003cp\u003eThis improves efficiency and makes Big Bertha particularly suitable for caravan, canopy and vehicle fit-outs where the oven may be positioned near cabinetry or storage systems.\u003c\/p\u003e\n\u003cp\u003eThe oven is listed as not requiring external ventilation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔧 BUILT FOR RECESSED OR PERMANENT INSTALLATION\u003c\/h3\u003e\n\u003cp\u003eHeavy-duty mounting brackets are included, giving you flexibility when incorporating Big Bertha into a touring fit-out.\u003c\/p\u003e\n\u003cp\u003eDepending on the installation, the oven can be mounted:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔧 Upright on a shelf\u003c\/li\u003e\n\u003cli\u003e🛻 Within a ute canopy fit-out\u003c\/li\u003e\n\u003cli\u003e🚐 Into suitable caravan cabinetry\u003c\/li\u003e\n\u003cli\u003e🏕️ As part of a camper kitchen system\u003c\/li\u003e\n\u003cli\u003e⬆️ Suspended underneath a suitable storage system where correctly supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe complete installation must securely support the oven's 8kg weight and remain stable during road travel.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🛣️ MADE FOR AUSTRALIAN TOURING\u003c\/h3\u003e\n\u003cp\u003eBig Bertha combines 304 stainless-steel construction with robust mounting and a fully insulated cooking chamber for life in touring vehicles.\u003c\/p\u003e\n\u003cp\u003eIt is well suited to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🚐 Caravans\u003c\/li\u003e\n\u003cli\u003e🚙 4WD touring vehicles\u003c\/li\u003e\n\u003cli\u003e🛻 Ute canopies\u003c\/li\u003e\n\u003cli\u003e🏕️ Camper trailers\u003c\/li\u003e\n\u003cli\u003e🚚 Trucks\u003c\/li\u003e\n\u003cli\u003e🏠 Off-grid 12V systems\u003c\/li\u003e\n\u003cli\u003e🛠️ Remote work vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e📐 SIZE, CAPACITY \u0026amp; WEIGHT\u003c\/h3\u003e\n\u003cp\u003eCooking Capacity: 13 Litres\u003c\/p\u003e\n\u003cp\u003eExternal Dimensions: 362mm × 255mm × 297mm\u003c\/p\u003e\n\u003cp\u003eInternal Cooking Area: 308mm × 150mm × 282mm\u003c\/p\u003e\n\u003cp\u003eWeight: 8kg\u003c\/p\u003e\n\u003cp\u003eMaterial: 304 Stainless Steel\u003c\/p\u003e\n\u003cp\u003eColour: Silver\u003c\/p\u003e\n\u003cp\u003eBefore designing cabinetry around the oven, measure the actual available space and allow for the Anderson connection, mounting hardware, door movement and any required installation clearances.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e📋 TECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cp\u003eProduct Type: Portable 12V Oven\u003c\/p\u003e\n\u003cp\u003eCooking Capacity: 13 Litres\u003c\/p\u003e\n\u003cp\u003ePower Supply: 12V DC\u003c\/p\u003e\n\u003cp\u003eHeating Elements: Dual Top \u0026amp; Bottom Elements\u003c\/p\u003e\n\u003cp\u003eElement Control: Top \/ Bottom \/ Both\u003c\/p\u003e\n\u003cp\u003ePower Consumption Per Element: 120W\u003c\/p\u003e\n\u003cp\u003eCurrent Draw Per Element: 10A @ 12V DC\u003c\/p\u003e\n\u003cp\u003eMaximum Combined Power: Approximately 240W\u003c\/p\u003e\n\u003cp\u003eMaximum Combined Current Draw: Approximately 20A @ 12V DC\u003c\/p\u003e\n\u003cp\u003eCooking Temperature: Up to Approximately 180°C\u003c\/p\u003e\n\u003cp\u003eControls: Adjustable Thermostat \u0026amp; 2-Hour Timer\u003c\/p\u003e\n\u003cp\u003eInsulation: Fully Insulated Body \u0026amp; Double-Insulated Door\u003c\/p\u003e\n\u003cp\u003eShelving: 2 × Telescopic Slide-Out Racks\u003c\/p\u003e\n\u003cp\u003eIncluded Tray: Deep-Dish Baking Tray\u003c\/p\u003e\n\u003cp\u003eMounting: Mounting Brackets Included\u003c\/p\u003e\n\u003cp\u003eVentilation: No External Ventilation Required\u003c\/p\u003e\n\u003cp\u003eConnection: Anderson Plug Only\u003c\/p\u003e\n\u003cp\u003eRecommended Wiring: Minimum 6mm² Cable\u003c\/p\u003e\n\u003cp\u003eMaterial: 304 Stainless Steel\u003c\/p\u003e\n\u003cp\u003eColour: Silver\u003c\/p\u003e\n\u003cp\u003eWeight: 8kg\u003c\/p\u003e\n\u003cp\u003eExternal Dimensions: 362mm × 255mm × 297mm\u003c\/p\u003e\n\u003cp\u003eInternal Cooking Area: 308mm × 150mm × 282mm\u003c\/p\u003e\n\u003cp\u003eApplications: Caravan, Camping, 4WD \u0026amp; Touring Cooking\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚠️ ELECTRICAL \u0026amp; INSTALLATION CONSIDERATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse a suitable 12V auxiliary battery system\u003c\/li\u003e\n\u003cli\u003eAllow for up to approximately 20A continuous load when both elements operate\u003c\/li\u003e\n\u003cli\u003eUse a minimum 6mm² conductor as specified\u003c\/li\u003e\n\u003cli\u003eIncrease cable size where required for longer runs and voltage-drop control\u003c\/li\u003e\n\u003cli\u003eUse appropriately rated fuse protection\u003c\/li\u003e\n\u003cli\u003eUse the Anderson plug connection – do not substitute an inadequately rated cigarette socket\u003c\/li\u003e\n\u003cli\u003eSecure the oven using suitable mounting hardware\u003c\/li\u003e\n\u003cli\u003eAllow for the oven's 8kg weight when designing cabinetry or suspended mounts\u003c\/li\u003e\n\u003cli\u003eProtect cables from heat, abrasion and sharp edges\u003c\/li\u003e\n\u003cli\u003eFollow installation-clearance requirements when recessing the oven\u003c\/li\u003e\n\u003cli\u003eUse only cookware suitable for oven temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e❓ FREQUENTLY ASKED QUESTIONS\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs Big Bertha worth choosing over a smaller Road Chef 12V oven?\u003c\/h3\u003e\n\u003cp\u003eIf you're mainly heating one lunch or a couple of pies, a smaller oven may be more economical in both space and power consumption. Big Bertha makes more sense if you regularly cook for two or more people, want to prepare proper roasts and baked meals or need the flexibility of independent top and bottom heating.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHow much more power does it use than the standard Road Chef 12V Oven?\u003c\/h3\u003e\n\u003cp\u003eThe standard Road Chef Oven draws approximately 8.3A. Big Bertha draws approximately 10A with one element or up to 20A with both elements operating. You therefore gain significantly more cooking capacity and heating flexibility, but your electrical system needs to be designed for the higher maximum load.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDo I need to run both heating elements all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. That's one of Big Bertha's major advantages. You can use the top element, bottom element or both. If you're simply reheating food, one element may be sufficient and limits current draw to approximately 10A. Both elements can be selected when you need stronger heating or browning.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I run it from a 100Ah lithium battery?\u003c\/h3\u003e\n\u003cp\u003eYes, provided the battery and BMS comfortably support the approximately 20A maximum oven load plus anything else running from the system. With both elements continuously operating, two hours would represent approximately 40Ah before allowing for thermostat cycling, so battery capacity and charging should be considered carefully.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWould a 200Ah lithium battery be better for regular use?\u003c\/h3\u003e\n\u003cp\u003eFor frequent cooking, a larger battery bank gives you considerably more energy reserve. The right capacity depends on the oven runtime plus your fridge, lighting, pumps, inverter and other daily loads. A larger battery does not reduce the oven's current draw, but it increases available runtime between charges.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I use Big Bertha with an AGM battery?\u003c\/h3\u003e\n\u003cp\u003eYes, provided the AGM system can maintain suitable voltage while supplying up to approximately 20A. Battery condition and available capacity become particularly important during longer cooking periods.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWill a 25A DC-DC charger keep up with Big Bertha while I'm driving?\u003c\/h3\u003e\n\u003cp\u003eIf both elements are drawing approximately 20A, a 25A charger has only around 5A of theoretical output remaining before accounting for the fridge and other loads. With one 10A element operating, considerably more charging capacity remains. Real-world results depend on actual charger output and total vehicle loads.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWould a 40A DC-DC charger be better?\u003c\/h3\u003e\n\u003cp\u003eA larger charger can provide more charging headroom when the oven and other accessories are operating simultaneously, provided the vehicle alternator and battery system can accept the higher charging rate. Charger size should be matched to the complete electrical system rather than the oven alone.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I run Big Bertha from solar while camping?\u003c\/h3\u003e\n\u003cp\u003eYes, through a correctly sized battery and solar charging system. Solar normally replenishes the battery while the battery supplies the oven. Because both elements can consume approximately 240W while operating, a substantial solar system will be more effective for regular off-grid cooking than a small portable panel.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I connect Big Bertha to a cigarette lighter socket?\u003c\/h3\u003e\n\u003cp\u003eNo. Big Bertha is designed for an Anderson plug connection and can draw approximately 20A with both elements operating. A typical cigarette lighter socket is not appropriate for this load.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I use an existing 50A Anderson outlet in my canopy?\u003c\/h3\u003e\n\u003cp\u003ePotentially, yes, provided the cable feeding the Anderson connector and its fuse protection are correctly sized for the circuit length and continuous load. The connector rating alone does not guarantee that the wiring behind it is adequate.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhy does it specify minimum 6mm² cable?\u003c\/h3\u003e\n\u003cp\u003eThe oven can draw up to approximately 20A continuously, and excessive voltage drop can reduce heating performance and create unnecessary heat in the wiring. A minimum 6mm² conductor helps provide a low-resistance supply, although longer cable runs may justify going larger.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I recess Big Bertha into my caravan or canopy cabinetry?\u003c\/h3\u003e\n\u003cp\u003eYes, the fully insulated construction and no-external-ventilation specification make it well suited to integrated installations. The cabinetry still needs to follow mounting and clearance requirements, support the 8kg oven securely and provide access to the controls, door and electrical connection.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it be mounted underneath a canopy shelf?\u003c\/h3\u003e\n\u003cp\u003eThe included mounting system allows flexible installation arrangements, including suitable suspended configurations. The mounting structure needs to support the oven's 8kg weight plus dynamic loads created while the vehicle is travelling on rough roads.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs the oven safe around timber cabinetry?\u003c\/h3\u003e\n\u003cp\u003eThe oven is fully insulated and designed for recessed applications, but installation should still follow required clearances and use appropriate surrounding materials. Do not assume that insulated construction allows unrestricted contact with every material or zero-clearance installation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I cook a proper roast rather than just heat one up?\u003c\/h3\u003e\n\u003cp\u003eYes. With up to approximately 180°C cooking temperature, 13L capacity and independent top and bottom elements, Big Bertha is designed for genuine cooking as well as reheating. Food size and cooking times will naturally differ from a full-size household oven.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I brown the top of a meal?\u003c\/h3\u003e\n\u003cp\u003eYes. Independent top-element control is particularly useful where additional top heat or browning is required.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat is the advantage of the special baking tray?\u003c\/h3\u003e\n\u003cp\u003eThe deep-dish tray can hang from the upper rails rather than sitting directly on the oven floor. This gives heated air more opportunity to circulate around the tray and is particularly useful for wetter foods such as marinated chicken and meats.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I cook on two levels at the same time?\u003c\/h3\u003e\n\u003cp\u003eYes. The two telescopic racks allow multiple smaller items to be cooked on separate levels, provided sufficient space remains around the food for heat circulation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I leave dinner cooking while I'm driving?\u003c\/h3\u003e\n\u003cp\u003eThe oven is designed for vehicle and touring applications, but it must be securely mounted and cooking containers must be stable enough to remain safely positioned during vehicle movement. Food containing significant liquid should be secured particularly carefully to prevent spills on rough roads.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eShould I choose Big Bertha or a 12V air fryer?\u003c\/h3\u003e\n\u003cp\u003eChoose Big Bertha if capacity, family meals, roasts, casseroles and cooking flexibility are your priority. A 12V air fryer is better suited to smaller portions where faster crisping is the goal. Big Bertha offers substantially more internal space and separate top\/bottom heating control.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eMeasure the available installation space against the 362 × 255 × 297mm external dimensions, allow for door opening and electrical connections, make sure your mounting structure can securely support 8kg and confirm your 12V system can supply up to approximately 20A through correctly sized wiring and an Anderson connection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e🔥 BIGGER CAPACITY. MORE CONTROL. PROPER 12V COOKING.\u003c\/h2\u003e\n\u003cp\u003eThe Road Chef Big Bertha takes portable 12V cooking beyond simple food warming, giving serious travellers a genuine 13-litre oven with independent top and bottom heating and temperatures up to approximately 180°C.\u003c\/p\u003e\n\u003cp\u003eWith up to 240W of combined heating power, twin telescopic racks, a deep-dish baking tray, two-hour timer, fully insulated stainless-steel construction and included mounting brackets, it is built for travellers who want to prepare real meals without relying on mains power.\u003c\/p\u003e\n\u003cp\u003eFor touring families, caravanners and 4WD owners who want more cooking space and flexibility from their 12V system, Big Bertha delivers serious portable oven capability without stepping up to a conventional 240V appliance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ROAD CHEF","offers":[{"title":"Default Title","offer_id":44512105103608,"sku":"BBRC12VO","price":399.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/9230\/4632\/files\/IX911Rf6.png?v=1709617989","url":"https:\/\/www.homeof12volt.com.au\/products\/road-chef-big-bertha-12v-oven-13l-dual-element-caravan-oven","provider":"Home of 12 Volt Northern","version":"1.0","type":"link"}