{"product_id":"the-reserve-column-portable-power-station","title":"The Reserve Column | 90,000mAh 300W Portable Power Station","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eA battery is a component. A reserve is a decision. The difference between the two shows up on the third day of a power cut, at the far end of a field where a camera trap has to keep running, or at a market stall that closes only when the light does. What matters is not the amp-hour figure on the label but whether the energy is available in the shape the equipment actually needs.\u003c\/p\u003e\n\u003cp\u003eThe Reserve Column stores 45,000 or 90,000 milliamp-hours of lithium-ion capacity and delivers it as 180 W or 300 W of rated output, depending on the variant chosen. It carries an AC outlet for mains-powered devices, DC output at 9 to 12 V for equipment that expects a vehicle socket, and USB ports with QC 3.0 fast charging for the phone, the radio and the camera. The chassis measures 191 x 90 x 90 mm at the smaller capacity and 250 x 120 x 110 mm at the larger, and the operating window of minus 20 to plus 60 degrees Celsius is wide enough to leave it in a vehicle or a shed without worrying about the season.\u003c\/p\u003e\n\u003cp\u003eThe unit was built as a working reserve rather than a jump starter, and the design reflects that: intelligent temperature control, a smart charging chip, multiple protection circuits and an onboard display that shows state of charge instead of hiding it behind a colour-changing diode. Built-in lighting adds several night modes and an SOS flashing warning, which turns the same box into a lantern at a campsite or a signal during a roadside stop.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAutonomy is not a number on a label. It is the hours you no longer have to plan around.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin:20px 0;border:0;border-top:1px solid #eee;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eWhy It Earns Its Place\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;\"\u003eCapacity options of 45,000 mAh at 180 W or 90,000 mAh at 300 W output\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eAC output for mains-powered devices at 100 to 120 V \/ 60 Hz or 220 to 250 V \/ 50 Hz\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eDC output at 9 to 12 V, 15 A or 9 to 12.6 V, 10 A depending on variant\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eUSB output with QC 3.0 fast charging for phones, radios and cameras\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eLithium-ion cells with intelligent temperature control and multiple protection circuits\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eOnboard display screen showing charge state and output status\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eBuilt-in camping lantern with multiple night lighting modes and SOS flashing warning\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eOperating range of -20 to +60 degrees Celsius for vehicle and outdoor storage\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eCertified to CE, PSE, FCC and RoHS standards\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eCompact chassis of 191 x 90 x 90 mm (45 Ah) or 250 x 120 x 110 mm (90 Ah)\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eGrid-independent operation for camping, field work, markets and emergency backup\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;\"\u003eSupplied as a battery unit with regional plug options at checkout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e PURFIELD\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Outdoor Emergency Power Supply\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Lithium-ion, single battery unit\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eNominal capacity:\u003c\/strong\u003e 45,000 mAh or 90,000 mAh\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eRated power:\u003c\/strong\u003e 180 W or 300 W\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eAC output:\u003c\/strong\u003e 100 to 120 V 60 Hz, or 220 to 250 V 50 Hz\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eDC output:\u003c\/strong\u003e 9 to 12 V 15 A, or 9 to 12.6 V 10 A\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eUSB output:\u003c\/strong\u003e QC 3.0 fast charging\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Yes, onboard charge and status screen\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -20 to +60 degrees Celsius\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 191 x 90 x 90 mm for 45 Ah, 250 x 120 x 110 mm for 90 Ah\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e Camping lantern modes with SOS flashing warning\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Intelligent temperature control and multi-circuit protection\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE, PSE, FCC, RoHS\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e Not a car jump starter\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003ePortable energy earns its place anywhere the grid stops earlier than the work does. A campsite or overlanding vehicle where a fridge, lights and camera batteries must last three days without a socket. A market or food stall that closes when the light fails rather than when the customers stop coming. A jobsite where a drill, a tester or a soldering iron needs mains-shaped power a hundred metres from the nearest outlet. A home office or clinic that cannot lose a router, a laptop or a small appliance to a rolling blackout. A field research or film crew running a camera trap, a monitor or a charger far from any cable, where the alternative is a generator and the noise and fuel that come with it.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-promise\"\u003e\n\u003ch3\u003eSupport That Answers\u003c\/h3\u003e\n\u003cp\u003eEvery unit is checked before dispatch and shipped from the regional warehouse you select at checkout. Before purchase and after it, questions are answered by the same team that listed the product, not by a script.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: What can 300 W actually run?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: The 90,000 mAh variant delivers up to 300 W through the AC outlet, which covers laptops, lights, routers, fans, small monitors, chargers, projectors and most small kitchen appliances within that rating. Devices with a high inrush current, such as a motor or a compressor, may briefly exceed the limit, so the continuous rating of the appliance matters more than its label.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Can I leave it in a vehicle year round?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: The operating range is minus 20 to plus 60 degrees Celsius, which is deliberately wider than the interior of a car in most climates. Extended exposure to very high temperatures still shortens lithium cell life, so shaded storage in summer is good practice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: How do I recharge it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: Through the supplied charging path for the variant selected: AC adapter at home, or DC input from a vehicle during a drive. Capacity per hour of charging scales with the input wattage, so the 90 Ah unit naturally takes longer to fill than the 45 Ah unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Is this a car jump starter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: No, and the listing is explicit about that. This is a pure battery reserve for powering equipment, lighting and small appliances. It is not designed to deliver the high cranking current a jump starter requires, and using it that way is outside its intended purpose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Which capacity should I buy?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: 45,000 mAh at 180 W suits phone, tablet, lighting and camera charging for a weekend or a single working day. 90,000 mAh at 300 W suits multi-day trips, a stall or jobsite that runs continuously, or any use where recharging opportunities are the limiting factor rather than the load itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Does the lighting mode work on its own?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: Yes. The built-in lantern runs independently of the AC and DC outlets, with several night lighting intensities plus an SOS flashing pattern for emergencies. It is the reason many buyers keep the unit in a vehicle as a light source first and a power source second.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 5px 0;\"\u003e\u003cstrong\u003eQ: Which plug variant will I receive?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eA: Checkout offers regional variants with the plug and voltage appropriate to the destination, including EU, UK, US and other options. Matching the variant to the delivery region keeps the AC input and output standards consistent with the local grid.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S44af236f32794cc488a0185446e278deH.webp?v=1710376191\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S5c6ce6b4dd884b5f820e912c548afc6dF.webp?v=1710376190\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S0e83daaec2ad42ecbf05116ee8c957fde.webp?v=1710376190\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sf707ca11694847a3a8b78af6f7ef3579T.webp?v=1710376192\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S6f5ad0f897e8472f82d79b1fe97e5601E.webp?v=1710376190\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sb0b70e25172449d287e6ee3c68ca3011C.webp?v=1710376190\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S67da2aa45dda4d28a64a370c7d75a316P.webp?v=1710376191\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sf655ab4b53f541a7b5ec3feed29fab9aH.webp?v=1710376192\" alt=\"The Reserve Column | 90,000mAh 300W Portable Power Station\" style=\"max-width:100%;height:auto;margin-bottom:14px;border-radius:4px;\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"The Reserve Column | 90,000mAh 300W Portable Power Station\", \"sku\": \"8385910702303\", \"brand\": {\"@type\": \"Brand\", \"name\": \"East Supplier Platform\"}, \"image\": \"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S44af236f32794cc488a0185446e278deH.webp?v=1710376191\", \"description\": \"A battery is a component. 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