{"product_id":"xtar-l4-pro-4-channel-aa-aaa-lithium-nimh-smart-charger","title":"XTAR L4 Pro 4 Channel AA\/AAA lithium \u0026 NiMh Smart Charger","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eUniversal AA\/AAA Smart Charging:\u003c\/strong\u003e Supports all rechargeable AA and AAA batteries in 1.5V lithium-ion and 1.2V Ni-MH chemistry across four independent slots, with automatic battery type detection and optimal charging strategy selection for each cell.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHD LCD Display:\u003c\/strong\u003e Built-in HD LCD screen visualizes charging and discharging status in real time with battery level bar indicators, providing clear and intuitive charge monitoring for all four slots simultaneously.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMulti-Stage NiMH Refresh Mode:\u003c\/strong\u003e Dual-mode refresh system — Quick Refresh and Smart Deep Refresh — eliminates memory effect, restores effective capacity, and extends battery service life for 1.2V Ni-MH cells.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMicro-Current Activation for Over-Discharged Batteries:\u003c\/strong\u003e Advanced micro-current activation at 200mA revives deeply over-discharged batteries at higher recovery rates than standard activation methods, recovering cells that conventional chargers may fail to detect.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeven Built-In Safety Protections:\u003c\/strong\u003e Comprehensive protection suite including over-discharged battery activation, auto-stop after full charge, reverse polarity protection, over-current protection, over-voltage protection, over-charge protection, and short-circuit protection.\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eOverview\u003c\/h4\u003e \u003cp\u003eThe XTAR L4 Pro is a smart four-slot AA\/AAA battery charger engineered for both 1.5V lithium-ion and 1.2V Ni-MH rechargeable batteries. Building on the capability of the standard L4, the L4 Pro adds an HD LCD display for real-time charge status visualization, a multi-stage NiMH refresh system for capacity restoration and memory effect elimination, and micro-current activation at 200mA for improved recovery of deeply over-discharged batteries. Powered via USB-C at DC 5V 2A, the L4 Pro delivers independent 0.5A charging per slot with CVSA technology and four additional full-charge detection methods to ensure complete, accurate charge termination with minimal heat generation. The unit is constructed with fireproof ABS+PC\/V0 housing, weighs 87g, and is compact enough for home and travel use. Compatibility extends across a wide range of 1.2V NiMH and 1.5V li-ion brands including XTAR, Eneloop, Energizer, EBL, Duracell, and others. Package includes the L4 Pro charger and a USB-C cable.\u003c\/p\u003e \u003ch4\u003eApplications \/ Uses\u003c\/h4\u003e \u003cul\u003e \u003cli\u003eCharging XTAR 1.5V li-ion AA and AAA rechargeable batteries and compatible third-party 1.5V li-ion AA\/AAA cells\u003c\/li\u003e \u003cli\u003eCharging and refreshing 1.2V Ni-MH AA and AAA batteries from XTAR, Eneloop, Energizer, EBL, Duracell, and other compatible brands\u003c\/li\u003e \u003cli\u003eRestoring degraded NiMH batteries via multi-stage Quick Refresh or Smart Deep Refresh to recover usable capacity and extend service life\u003c\/li\u003e \u003cli\u003eRecovering deeply over-discharged AA and AAA batteries using micro-current activation that standard chargers cannot perform\u003c\/li\u003e \u003cli\u003eHome, office, and travel use powered by any standard USB-C 5V 2A power source\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003cdiv class=\"table-wrapper\"\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e\n\u003ctd\u003eBrand:\u003c\/td\u003e\n\u003ctd\u003eXTAR\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eModel:\u003c\/td\u003e\n\u003ctd\u003eL4 Pro\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCompatible Battery Size:\u003c\/td\u003e\n\u003ctd\u003eAA \/ AAA\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCompatible Battery Type:\u003c\/td\u003e\n\u003ctd\u003e1.5V Li-ion and 1.2V Ni-MH\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNumber of Slots:\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003ePower Input:\u003c\/td\u003e\n\u003ctd\u003eDC 5V 2A, USB-C port\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCharging Current:\u003c\/td\u003e\n\u003ctd\u003e0.5A x 1 \/ 0.5A x 4 (independent per slot)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eActivation Current:\u003c\/td\u003e\n\u003ctd\u003e200+\/-50mA\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCharging Cutoff (Li-ion):\u003c\/td\u003e\n\u003ctd\u003eN\/A, 100mA or less\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCharging Cutoff (NiMH):\u003c\/td\u003e\n\u003ctd\u003e1.45+\/-0.1V, N\/A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDisplay:\u003c\/td\u003e\n\u003ctd\u003eHD LCD with battery level bar indicators\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNiMH Refresh Mode:\u003c\/td\u003e\n\u003ctd\u003eQuick Refresh and Smart Deep Refresh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eOver-Discharged Battery Recovery:\u003c\/td\u003e\n\u003ctd\u003eYes — micro-current activation\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eHousing Material:\u003c\/td\u003e\n\u003ctd\u003eFireproof ABS+PC\/V0\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eSafety Features:\u003c\/td\u003e\n\u003ctd\u003eOver-discharged battery activation, auto-stop after full charge, reverse polarity, over-current, over-voltage, over-charge, short-circuit protection\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eOperating Temperature:\u003c\/td\u003e\n\u003ctd\u003e0°C to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eStorage Temperature:\u003c\/td\u003e\n\u003ctd\u003e-10°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDimensions:\u003c\/td\u003e\n\u003ctd\u003e80mm (L) x 102mm (W) x 27.5mm (H)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e87g\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eUser Manual:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/L4-Pro-User-Manual-min.pdf?v=1789672607\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eView User Manual\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/XTAR_L4_Pro_4_Channel_AAAAA_lithium_NiMh_Smart_Charger_1.webp?v=1789672595\" alt=\"XTAR L4 Pro 4-Channel AA\/AAA Smart Battery Charger\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/XTAR_L4_Pro_4_Channel_AAAAA_lithium_NiMh_Smart_Charger_2.gif?v=1789672595\" alt=\"XTAR L4 Pro 4-Channel AA\/AAA Smart Battery Charger\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/XTAR_L4_Pro_4_Channel_AAAAA_lithium_NiMh_Smart_Charger_3.webp?v=1789672595\" alt=\"XTAR L4 Pro 4-Channel AA\/AAA Smart Battery Charger\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/XTAR_L4_Pro_4_Channel_AAAAA_lithium_NiMh_Smart_Charger_4.webp?v=1789672595\" alt=\"XTAR L4 Pro 4-Channel AA\/AAA Smart Battery Charger\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/XTAR_L4_Pro_4_Channel_AAAAA_lithium_NiMh_Smart_Charger_5.png?v=1789672595\" alt=\"XTAR L4 Pro 4-Channel AA\/AAA Smart Battery Charger\"\u003e","brand":"XTAR","offers":[{"title":"Default Title","offer_id":67610298122550,"sku":"XTAR-L4-PRO","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/XTAR-L4-PRO.jpg?v=1790720759","url":"https:\/\/18650battery.com\/products\/xtar-l4-pro-4-channel-aa-aaa-lithium-nimh-smart-charger","provider":"18650Battery","version":"1.0","type":"link"}