KTAC TECHNOLOGY, with over 20 years of UPS Power Supply supply manufacturing experience since 2004, presents the DC Series—a comprehensive lineup of mini DC UPS solutions designed for home networks, security systems, small offices, and industrial applications. Our DC UPS lineup covers power ratings from 18W to 65W, featuring advanced lithium iron phosphate (LiFePO₄) battery technology, multi-voltage output capabilities, PoE support, and millisecond-level seamless switching.
A DC UPS, or direct current uninterruptible power supply, is a compact power protection device designed specifically for low-voltage DC-powered equipment. Unlike traditional AC UPS systems that convert AC to DC and back to AC—wasting energy and occupying significant space—a DC UPS directly outputs the DC voltage your devices need, eliminating unnecessary conversion losses. It is essentially a smart battery backup system that sits between your wall outlet and your DC-powered devices, providing seamless emergency power during outages.
Selecting the optimal DC UPS for your specific needs requires careful evaluation of several critical factors:
1. Power Requirements – Calculate the total power consumption of all devices you plan to protect. For a single router or ONT drawing approximately 12W, the DC1837S (18W) provides ample capacity. For a router plus modem combination (about 18W total), the DC3637P (36W) or DC4032 (40W) would be more appropriate. For power-hungry equipment like laptops (45W), mini PCs, or multiple network devices simultaneously, the DC6032 (60W) or DC6519 (65W) deliver the necessary headroom.
2. Output Voltage Compatibility – Different devices require different voltages. Most routers and ONTs operate at 12V, while some require 9V or 5V. Laptops typically need 19V, and PoE devices require 15V or 24V. Our DC Series offers flexible voltage options: entry models provide 12V output, mid-range models add 5V and 9V support, while high-end models feature 14-19V adjustable outputs and USB-C PD for laptop compatibility.
3. Backup Time – Consider how long you need your devices to run during an outage. The DC1837S (5,200mAh) provides approximately 3 hours for a typical 12V/1A router. The DC3637P (10,000mAh) offers about 6 hours for a single router or 3 hours for a router plus modem. The DC4032 (64Wh LiFePO₄) delivers approximately 5 hours for a 12V/1A router. The high-capacity DC6032 (192Wh) can power a router and modem combination for over 30 hours.
4. Battery Chemistry – Lithium-ion batteries offer higher energy density but shorter cycle life. Lithium iron phosphate (LiFePO₄) batteries provide superior safety, longer cycle life (2,000+ cycles at 80% DOD), and better thermal stability. KTAC's DC Series predominantly uses brand-new LiFePO₄ cells—never recycled or second-hand cells—ensuring safety, longevity, and peace of mind.
5. Special Features – Consider whether you need PoE output for network cameras and wireless APs, USB-C PD for laptop charging, RS485 communication for remote monitoring, or wide voltage input for global compatibility.
All KTAC DC UPS units feature hardware-level fast switching circuits that transition between AC power and battery power in milliseconds—fast enough that connected devices do not restart or experience any perceptible interruption. This ensures that VoIP calls continue uninterrupted, video surveillance recordings remain intact, and critical data transmissions are not lost during sudden blackouts.
KTAC explicitly commits to using brand-new A-grade battery cells across all DC Series products. The DC1837S uses 2x 3.7V 2600mAh 18650 cells, the DC4032 uses 4x 3.2V 5000mAh 26700 LiFePO₄ cells, and the DC6032 uses 3x 3.2V 15000mAh 33140 LiFePO₄ cells. We never use recycled or second-hand cells—ensuring superior cycle life, thermal stability, and safety.
Our DC UPS units feature multiple independent output ports, allowing simultaneous power protection for multiple devices. The DC1837S offers 2x 12V DC outputs, the DC3637P provides USB, DC, and PoE outputs, the DC4032 features 6 output ports including USB-C PD, and the DC6519 delivers 5 output ports including 19V laptop charging. Each output port is independently protected with resettable thermal fuses.
Every KTAC DC UPS is equipped with CPU intelligent control and multiple layers of protection: overcharge protection, over-discharge protection, over-current protection, short-circuit protection, and over-temperature protection. Each output port features independent resettable thermal fuses that automatically reset after cooling—reducing maintenance costs and ensuring long-term reliability.
Our DC UPS units feature intuitive LED indicators showing remaining battery capacity (25%/50%/75%/100%) and charging status. Advanced models like the DC4032 include RS485 communication interfaces for reading charge status, battery percentage, and low-battery alarm signals—enabling integration with smart home systems or remote monitoring platforms. The DC6519 features an LCD display showing battery voltage, SOC percentage, and charger status.
Our DC UPS units support wide AC input voltage ranges (85-265V, 50/60Hz), making them compatible with electrical systems worldwide. No voltage selector switches or additional adapters are required—simply plug in and use in any country.
The DC Series features exceptionally compact footprints: the DC1837S measures just 109×82×29mm and weighs only 0.18kg, the DC3637P measures 185×93×36mm at 0.38kg, and even the high-capacity DC6519 weighs only 1.36kg. These ultra-compact designs fit easily into weak current boxes, on desktops, or mounted on walls—preserving valuable space.
DC1837S (18W / 12V): The entry-level solution for single-device protection. Powers one router or ONT with 5,200mAh capacity and approximately 3 hours backup time. Ideal for home networks, student dorms, and small offices.
DC3637P (36W / Multi-Voltage): A versatile solution with 10,000mAh capacity, supporting 5V, 9V, 12V, and PoE (15V/24V) outputs. Powers routers, modems, IP cameras, and PoE devices simultaneously.
DC4032 (40W / 64Wh LiFePO₄): A high-capacity solution featuring 4x 26700 LiFePO₄ cells (64Wh total), 5V/9V/12V outputs, USB-C PD, and RS485 communication. Powers routers, ONTs, IP cameras, and small displays with approximately 5 hours backup time for a typical router.
DC6032 (60W / 192Wh LiFePO₄): A high-power solution featuring 3x 33140 LiFePO₄ cells (192Wh total), 14-19V adjustable output for laptops, 12V outputs, and PoE support. Powers laptops, mini PCs, industrial controllers, and 4G/5G CPE devices.
DC6519 (65W / 96Wh LiFePO₄): The flagship portable UPS solution featuring 6x 26700 LiFePO₄ cells (96Wh total), 19V/4A laptop output, USB-C PD 65W, and LCD display. Powers laptops, mini PCs, tablets, CPAP machines, and cameras.
Home Network Protection: Protect your ONT, router, and switch from power outages—ensuring uninterrupted internet access for remote work, online education, and smart home control.
Security Surveillance Systems: Provide backup power for 12V or 9V IP cameras and NVRs, ensuring continuous recording during blackouts—critical for shops, warehouses, and residential properties.
Small Office and Retail: Keep POS systems, VoIP phones, and network equipment operational during outages—preventing business interruption and data loss.
Mobile and Temporary Power: The DC6519 serves as a portable power station for laptops, tablets, and cameras during business travel, outdoor exhibitions, or field debugging.
IoT and Industrial Applications: Power sensors, controllers, and communication modules in weak current boxes or outdoor enclosures.
ISP and Telecom Deployments: Provide reliable backup power for CPE, ONT, and ONU devices in FTTH deployments.
A: A DC UPS directly outputs the DC voltage your devices need (5V, 9V, 12V, 19V, etc.), eliminating the AC-to-DC conversion losses of traditional AC UPS systems. This makes DC UPS units significantly more efficient (95%+ efficiency), smaller, lighter, and more cost-effective for low-voltage DC devices like routers, cameras, and network equipment.
A: Yes. All KTAC DC UPS units feature multiple independent output ports. As long as the total power consumption does not exceed the unit's rated output power, you can power multiple devices simultaneously.
A: The UPS will automatically shut down output to protect the battery from over-discharge. When AC power is restored, the unit automatically recharges and resumes output—no manual intervention required.
A: Charging time varies by model and input power. The DC1837S charges in approximately 2-3 hours, the DC3637P in 5-6 hours with 12V/1.5A input, and the DC6519 in approximately 2 hours with 15V/4A input.
A: Our DC UPS units are designed as sealed units and are not user-serviceable. For battery aging issues, please contact our after-sales service for professional battery module replacement.
A: LiFePO₄ batteries offer approximately 2,000 cycles at 80% DOD. Assuming 2 power outages per week (approximately 100 cycles per year), theoretical lifespan exceeds 20 years. Even with daily cycling, you can expect 5-6 years of reliable service.
