説明
A 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.
The 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.
The 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.
Autonomy is not a number on a label. It is the hours you no longer have to plan around.
Why It Earns Its Place
- Capacity options of 45,000 mAh at 180 W or 90,000 mAh at 300 W output
- AC output for mains-powered devices at 100 to 120 V / 60 Hz or 220 to 250 V / 50 Hz
- DC output at 9 to 12 V, 15 A or 9 to 12.6 V, 10 A depending on variant
- USB output with QC 3.0 fast charging for phones, radios and cameras
- Lithium-ion cells with intelligent temperature control and multiple protection circuits
- Onboard display screen showing charge state and output status
- Built-in camping lantern with multiple night lighting modes and SOS flashing warning
- Operating range of -20 to +60 degrees Celsius for vehicle and outdoor storage
- Certified to CE, PSE, FCC and RoHS standards
- Compact chassis of 191 x 90 x 90 mm (45 Ah) or 250 x 120 x 110 mm (90 Ah)
- Grid-independent operation for camping, field work, markets and emergency backup
- Supplied as a battery unit with regional plug options at checkout
Technical Specifications
- Brand: PURFIELD
- Model: Outdoor Emergency Power Supply
- Type: Lithium-ion, single battery unit
- Nominal capacity: 45,000 mAh or 90,000 mAh
- Rated power: 180 W or 300 W
- AC output: 100 to 120 V 60 Hz, or 220 to 250 V 50 Hz
- DC output: 9 to 12 V 15 A, or 9 to 12.6 V 10 A
- USB output: QC 3.0 fast charging
- Display: Yes, onboard charge and status screen
- Operating temperature: -20 to +60 degrees Celsius
- Dimensions: 191 x 90 x 90 mm for 45 Ah, 250 x 120 x 110 mm for 90 Ah
- Lighting: Camping lantern modes with SOS flashing warning
- Protection: Intelligent temperature control and multi-circuit protection
- Certification: CE, PSE, FCC, RoHS
- Intended use: Not a car jump starter
- Origin: Mainland China
Where It Belongs
Portable 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.
Support That Answers
Every 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.
Frequently Asked Questions
Q: What can 300 W actually run?
A: 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.
Q: Can I leave it in a vehicle year round?
A: 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.
Q: How do I recharge it?
A: 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.
Q: Is this a car jump starter?
A: 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.
Q: Which capacity should I buy?
A: 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.
Q: Does the lighting mode work on its own?
A: 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.
Q: Which plug variant will I receive?
A: 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.
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