{"product_id":"dc-power-supply-variable-120v-3a-adjustable-compact-bench-unit","title":"DC Power Supply Variable 120V 3A Adjustable - Compact Bench Unit","description":"\u003cp\u003eIn this review the DC Power Supply Variable 120V 3A Adjustable is evaluated as a compact bench supply aimed at hobbyists, small labs and repair work. The single biggest reason to consider it is the combination of an \u003cstrong\u003eintelligent charging mode\u003c\/strong\u003e with safety detection that stops charging when a battery is full, which simplifies charging tasks and reduces risk. The unit's small footprint and an 18W USB output make it practical for bench use where space and a secondary device charger matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent charging mode:\u003c\/strong\u003e Real-time display of charging power (Ah) and automatic stop when a battery is fully charged prevents overcharging and simplifies battery maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvercurrent detection alarm:\u003c\/strong\u003e The OCP button enables a protective alarm and stops output on short circuits or overcurrent, protecting connected equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact footprint:\u003c\/strong\u003e At under 2.3 lb and roughly 7.59 x 3.35 x 6.1 in, the supply fits tight bench spaces used in labs, classrooms or home workstations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18W USB interface:\u003c\/strong\u003e A built-in 18W USB port provides convenient faster charging for phones or accessories without occupying the main output terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-layer safety protections:\u003c\/strong\u003e Grounding, leakage, thermal and overload safeguards help ensure reliable operation and extended component life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision encoder knob:\u003c\/strong\u003e The adjustment knob allows fine control of voltage output for tasks that need accurate settings, though coarse feel may vary by user.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis unit suits small laboratories, electronics hobbyists, repair technicians and schools that need an affordable, space-saving DC supply with intelligent battery charging and multiple protections. Its USB port and compact size make it useful for makers and bench techs who also charge devices while working.\u003c\/p\u003e\n\u003cp\u003eThose who require high continuous power, full laboratory-grade bench features, or extremely fine mechanical coarse adjustment may prefer a larger or more premium regulated supply; the encoder knob provides precise fine adjustments but some users report the coarse adjustment feel is less smooth.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntelligent charging with Ah readout and auto-stop reduces risk of overcharging batteries.\u003c\/li\u003e\n\u003cli\u003eBuilt-in overcurrent detection alarm and several safety protections make it reliable for repeated bench use.\u003c\/li\u003e\n\u003cli\u003eVery compact and lightweight, making it easy to place on crowded benches or transport between workspaces.\u003c\/li\u003e\n\u003cli\u003e18W USB output is useful for charging mobile devices without using the main terminals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users find the coarse adjustment on the encoder knob less intuitive, requiring time to get used to for large voltage changes.\u003c\/li\u003e\n\u003cli\u003eNot intended for high-power continuous loads where a larger rated supply would be needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum voltage\u003c\/td\u003e\n\u003ctd\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum current\u003c\/td\u003e\n\u003ctd\u003e3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB output\u003c\/td\u003e\n\u003ctd\u003e18W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eUnder 2.3 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e7.59 x 3.35 x 6.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection features\u003c\/td\u003e\n\u003ctd\u003eGrounding, leakage, thermal, voltage overload, power overload, short-circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eOutput power cords, input power cord, user manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe DC Power Supply Variable 120V 3A Adjustable is a solid value for bench users who prioritize compact size, safety features and a convenient 18W USB port. It is particularly good for hobbyists, classrooms and small repair tasks where intelligent charging and multiple protections matter; those needing heavier continuous power should choose a larger supply.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it stop charging when a battery is full?\u003c\/strong\u003e\u003cbr\u003eYes. The intelligent charging mode monitors Ah and stops charging automatically when the battery reaches full charge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it protect against short circuits?\u003c\/strong\u003e\u003cbr\u003eYes. The OCP overcurrent detection alarm stops output and sounds an alert when a short circuit or overcurrent is detected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the unit portable for field use?\u003c\/strong\u003e\u003cbr\u003eYes. At under 2.3 lb and compact dimensions it is easy to move between benches or take to classrooms and small work sites.\u003c\/p\u003e","brand":"Kungber","offers":[{"title":"Default Title","offer_id":48669195305179,"sku":"B08DJ25QL2","price":99.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Q6wYLsyZL._SL1500.jpg?v=1778626714","url":"https:\/\/gearmusthave.com\/products\/dc-power-supply-variable-120v-3a-adjustable-compact-bench-unit","provider":"GearMustHave","version":"1.0","type":"link"}