{"product_id":"tenergy-tn456-smart-4-slot-battery-charger","title":"Tenergy TN456 Intelligent Universal Battery Charger with 4 Slots","description":"\u003cp\u003eOur review of the Tenergy TN456 finds it best suited to hobbyists and power-users who keep a mixed collection of NiMH, NiCd and Li-ion cells and want one compact charger that handles them all. The single biggest reason to buy is its combination of individually configurable slots and an informative backlit LCD that makes charging, capacity testing and monitoring straightforward without pairing batteries or guessing state of charge. For anyone who needs flexible currents, cell compatibility from 1.2V to 3.7V cells, and a usable USB output, this charger delivers clear feedback and useful functions.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e Works with many sizes of NiMH, NiCd and Li-ion cells so users can charge AA, AAA and larger cylindrical lithium batteries in the same unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent slots:\u003c\/strong\u003e Four individual charging bays allow each battery to be charged with its own mode and current setting instead of forcing paired charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable charge current:\u003c\/strong\u003e Charge current choices from 300 to 1000mA per slot help balance speed and battery longevity depending on cell capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity test mode:\u003c\/strong\u003e Built-in test mode measures battery capacity so you can track performance and identify weak cells before relying on them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInformative LCD:\u003c\/strong\u003e A backlit display cycles through voltage, current, capacity, internal resistance and elapsed time so users can monitor progress at a glance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB output:\u003c\/strong\u003e A 5V\/1A USB port provides a convenient way to charge a phone or accessory while the charger handles batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe TN456 is aimed at photographers, RC hobbyists, flash users and technicians who maintain a variety of rechargeable batteries and want per-slot control plus capacity testing to manage cell health. It is also practical for households that reuse AA and AAA cells and want more insight than a simple rapid charger provides.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for users who only need a single-size fast charger or expect extremely high charge currents; those seeking the fastest possible single-bay charging or a wallet-level disposable replacement may prefer a simpler or higher-current dedicated charger.\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\u003eFlexible charging for both NiMH\/NiCd and a wide range of Li-ion sizes, reducing the need for multiple chargers.\u003c\/li\u003e\n\u003cli\u003eIndividually configurable slots and multiple current settings make it easy to treat each cell appropriately.\u003c\/li\u003e\n\u003cli\u003eCapacity testing and a backlit LCD provide useful diagnostic information and clear status updates.\u003c\/li\u003e\n\u003cli\u003eCompact package with a bonus USB port adds convenience for charging small devices.\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 report mixed long-term battery life outcomes, so a few cells may underperform or fail sooner than expected.\u003c\/li\u003e\n\u003cli\u003eMaximum 1000mA per slot is practical but not ideal for very large high-current batteries that need faster charging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003eAC 100-240V \/ DC 12V \/ 3.0A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput (NiMH\/NiCd)\u003c\/td\u003e\n\u003ctd\u003e1.48V x 4 at 300\/500\/700\/1000mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput (Li-ion)\u003c\/td\u003e\n\u003ctd\u003e4.2V x 4 at 300\/500\/700\/1000mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Port\u003c\/td\u003e\n\u003ctd\u003eDC 5V \/ 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlots\u003c\/td\u003e\n\u003ctd\u003eFour independent charging slots with individual settings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eBacklit LCD showing capacity, voltage, current, internal resistance and time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Contents\u003c\/td\u003e\n\u003ctd\u003eTN456 charger, power adapter, user manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Tenergy TN456 is a versatile, well-built charger for users who need multi-chemistry support, per-slot control and basic capacity testing at a sensible price. It offers good value for photographers, hobbyists and households that manage mixed battery inventories, though those requiring the fastest single-bay charging or guaranteed long-term cell life should monitor individual batteries and replace weak cells when capacity tests show decline.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan the TN456 charge different battery sizes at the same time?\u003c\/strong\u003e\u003cbr\u003eYes. Each of the four slots is independent, so different sizes and chemistries can be charged simultaneously with separate settings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the charger provide a USB charging option?\u003c\/strong\u003e\u003cbr\u003eYes. The unit includes a DC 5V\/1A USB port for charging a phone or small accessory while batteries are charged.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it test battery capacity?\u003c\/strong\u003e\u003cbr\u003eYes. The TEST mode measures discharge capacity so you can identify weak or worn batteries and track performance over time.\u003c\/p\u003e","brand":"Tenergy","offers":[{"title":"Default Title","offer_id":46754740797659,"sku":"B00SNWMQ40","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71QK2xLRBSL._AC_SL1500.jpg?v=1747503674","url":"https:\/\/gearmusthave.com\/products\/tenergy-tn456-smart-4-slot-battery-charger","provider":"GearMustHave","version":"1.0","type":"link"}