{"product_id":"ch4-4p-dc5v-universal-four-usb-battery-charger","title":"CH4-4P DC5V Universal Four USB Battery Charger","description":"\u003cmeta name=\"description\" content=\"Buy CH4-4P DC5V Universal Four USB Battery Charger online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eCH4-4P DC5V Universal Four USB Battery Charger\u003c\/h1\u003e\n\n\u003cp\u003eThe CH4-4P DC5V Universal Four USB Battery Charger is a compact multi-slot intelligent charging solution designed for simultaneously charging up to four rechargeable batteries with independent circuit protection and smart charging algorithms. Electronics professionals, hobbyists, and field technicians rely on this charger for maintaining AA, AAA, and 18650 lithium-ion batteries in demanding applications including IoT devices, robotics projects, and portable instrumentation. This charger solves the critical problem of managing multiple battery types and charge states simultaneously while preventing overcharging, short circuits, and thermal runaway conditions.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe CH4-4P operates on a DC5V input supply with four independent charging channels, each equipped with dedicated microprocessor control and constant-current constant-voltage (CC-CV) charging topology. The charger features intelligent battery detection that automatically identifies battery type and capacity, adjusting charging parameters in real-time to optimize charge cycles and extend battery lifespan. Each channel incorporates individual LED status indicators displaying charging progress, fully charged state, and fault conditions, allowing simultaneous monitoring of four different batteries without manual intervention.\u003c\/p\u003e\n\n\u003cp\u003eThis universal charger design accommodates multiple battery chemistries including NiMH, NiCd, and Li-ion batteries through firmware-based chemistry detection and adaptive charging curves. The integrated thermal management system includes temperature sensors that automatically reduce charging current if battery temperature exceeds safe operating thresholds, protecting expensive battery packs in field conditions. The compact form factor and USB power delivery compatibility make this charger ideal for field service technicians, embedded systems developers, and professionals managing distributed battery inventories across multiple project sites.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eUniversal Four-Channel Battery Charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003eDC 5V USB Power Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Channels\u003c\/td\u003e\n\u003ctd\u003eFour Independent Slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Battery Types\u003c\/td\u003e\n\u003ctd\u003eAA, AAA, 18650 Li-ion, NiMH, NiCd\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Current Per Channel\u003c\/td\u003e\n\u003ctd\u003e500mA Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Power Consumption\u003c\/td\u003e\n\u003ctd\u003e2.5W at Full Load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Detection\u003c\/td\u003e\n\u003ctd\u003eAutomatic Chemistry and Capacity Recognition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Features\u003c\/td\u003e\n\u003ctd\u003eOvercharge Protection, Short Circuit Protection, Temperature Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003eIndividual Status per Channel (Charging\/Charged\/Error)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 45 Degrees Celsius\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOriginal Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal and Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eFour Independent Charging Channels with isolated circuits preventing cross-channel interference and enabling simultaneous charging of different battery types at optimal rates\u003c\/li\u003e\n\u003cli\u003eIntelligent Battery Detection System that automatically identifies battery chemistry, capacity, and health status, adjusting charging algorithms for maximum cycle life and safety\u003c\/li\u003e\n\u003cli\u003eUniversal Battery Compatibility supporting AA, AAA, 18650 lithium-ion, and NiMH batteries, eliminating the need for multiple single-purpose chargers in professional environments\u003c\/li\u003e\n\u003cli\u003eAdvanced Thermal Management with real-time temperature monitoring and automatic current reduction, protecting expensive battery investments in field deployment scenarios\u003c\/li\u003e\n\u003cli\u003eIndividual LED Status Indicators on each channel providing instant visual feedback on charging progress, completion, and fault conditions without requiring external monitoring equipment\u003c\/li\u003e\n\u003cli\u003eCompact USB-Powered Design operating from standard 5V USB supplies, making it compatible with power banks, laptop USB ports, and solar charging systems in remote locations\u003c\/li\u003e\n\u003cli\u003eOvercharge and Short Circuit Protection with multi-level safety mechanisms preventing battery damage, fire hazards, and equipment damage in unattended charging scenarios\u003c\/li\u003e\n\u003cli\u003eFast Charging Capability delivering 500mA per channel for rapid battery replenishment while maintaining safe charging curves and thermal stability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eIoT Device Maintenance where field technicians deploy multiple sensor nodes requiring frequent battery rotation and rapid turnaround charging in remote installations\u003c\/li\u003e\n\u003cli\u003eRobotics and Drone Operations supporting simultaneous charging of multiple battery packs used in autonomous systems, ensuring minimal downtime between field tests and competitions\u003c\/li\u003e\n\u003cli\u003eEmergency Response and Field Service where portable battery management is critical for maintaining communication devices, flashlights, and portable instrumentation during extended operations\u003c\/li\u003e\n\u003cli\u003eEducational Electronics Labs and Maker Spaces enabling students and hobbyists to safely charge diverse battery types while learning battery chemistry, charging algorithms, and power management principles\u003c\/li\u003e\n\u003cli\u003eProfessional Photography and Video Production managing AA and AAA batteries for wireless microphones, flash units, and remote triggers across multiple simultaneous shoots\u003c\/li\u003e\n\u003cli\u003ePortable Medical Device Support charging batteries for portable ultrasound units, pulse oximeters, and diagnostic equipment in clinical and field medical settings\u003c\/li\u003e\n\u003cli\u003eEmbedded Systems Development where engineers prototype and test battery-powered devices requiring frequent charge cycles and reliable power management validation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eBegin by connecting the CH4-4P to a DC 5V power source using a standard USB cable or compatible power adapter. The charger will initialize automatically, with all four LED indicators briefly illuminating to confirm operational status. Insert your first battery into any available charging slot, ensuring correct polarity alignment as indicated by the slot markings. The intelligent detection system will immediately identify the battery type and capacity, automatically configuring the appropriate charging parameters. Repeat this process for additional batteries, noting that each channel operates independently, allowing simultaneous charging of different battery types without manual intervention.\u003c\/p\u003e\n\n\u003cp\u003eMonitor the LED indicators during the charging process. A steady amber or blue light indicates active charging, while a green light signals complete charge. If a red light appears, the charger has detected a fault condition such as reverse polarity, battery damage, or excessive temperature. In this case, remove the affected battery and inspect for physical damage or corrosion. The charger will automatically resume normal operation when the faulty battery is removed. For optimal battery longevity, avoid leaving fully charged batteries in the charger for extended periods. Remove batteries within 30 minutes of the completion indicator to prevent trickle charging and battery degradation. Store the charger in a cool, dry location and keep the USB input port free from moisture and debris.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I charge different battery types simultaneously in different channels?\u003c\/summary\u003e\n\u003cp\u003eYes, the CH4-4P is specifically designed for this capability. Each channel features independent circuit control and intelligent battery detection, allowing you to simultaneously charge AA alkaline, AAA NiMH, and 18650 lithium-ion batteries in different slots. The charger automatically configures appropriate charging curves for each battery type without requiring manual selection or channel configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat happens if I insert a battery with incorrect polarity?\u003c\/summary\u003e\n\u003cp\u003eThe charger incorporates reverse polarity protection that prevents damage to both the battery and charger circuitry. When incorrect polarity is detected, the affected channel will display a red error indicator and stop charging current delivery. Simply remove and reinsert the battery with correct polarity alignment as marked on the slot. The channel will automatically resume normal operation once proper polarity is established.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow long does it take to fully charge a typical AA battery?\u003c\/summary\u003e\n\u003cp\u003eCharging time depends on battery capacity and chemistry. A standard 2000mAh NiMH AA battery typically charges in 4-5 hours at the charger's 500mA maximum current. Lithium-ion 18650 batteries with 2600-3000mAh capacity require approximately 5-6 hours. The charger automatically adjusts current in the final charging phase to prevent overcharging, extending total charge time but significantly improving battery cycle life and safety.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs the charger safe for unattended operation?\u003c\/summary\u003e\n\u003cp\u003eYes, the CH4-4P incorporates multiple safety mechanisms including overcharge protection, temperature monitoring, and short circuit detection, making it safe for unattended charging. However, we recommend removing fully charged batteries within 30 minutes of completion to prevent trickle charging and battery stress. Do not leave the charger powered continuously when not in active use, as this can degrade internal components over extended periods.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat power source should I use with this charger?\u003c\/summary\u003e\n\u003cp\u003eThe charger requires a stable DC 5V power supply capable of delivering at least 2.5A under full load conditions when all four channels are actively charging. Compatible sources include USB power adapters rated 5V\/2.5A or higher, power banks with USB-A output ports, computer USB ports with sufficient current capacity, and solar USB charging panels rated for 5V output. Avoid using unstable or undersized power supplies, as voltage fluctuations can damage the charger's internal circuits.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy CH4-4P DC5V Universal Four USB Battery Charger Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the \u003cstrong\u003eCH4-4P DC5V Universal Four USB Battery Charger\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eCH4-4P DC5V Universal Four USB Battery Charger\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43774853775523,"sku":"TES-EV8103127","price":2118.94,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/ch4-4p_dc5v_universal_four_usb_battery_charger.jpg?v=1701088641","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/ch4-4p-dc5v-universal-four-usb-battery-charger","provider":"The Engineer Store","version":"1.0","type":"link"}