ColdBye 7.4V/5V 20000mah PD 30W Battery Pack for Heated Vest Built-in 3 DC Size Adapter, 𝟕.𝟒𝐕/5𝐀 𝟐𝟎𝟎𝟎𝟎𝐦𝐀𝐡 Fasting Charging Battery Pack for Heated Jackets with LED Display

Specifications

• 【Exclusive Tri-Size DC Ports – No Adapters Needed】The only heated-apparel battery with three built-in 7.4 V DC jacks (3.5 mm, 3.8 mm and 4.0 mm). Forget loose adapter cables and pocket bulk—just plug and go. Compatible with most 7.4 V heated vests and jackets
• 【30 W USB-C PD Fast Charge & Certified Safety】USB-C PD In/Out up to 30 W (5 V 3 A, 9 V 3 A, 12 V 2.5 A, 15 V 2 A, 20 V 1.5 A) charges the pack 0 → 100 % in ≈ 2.9 h if with a 30 W charger(Wall charger not included.). Built-in BMS meets UL2056, FCC, CE, and RoHS standards for over-charge, over-temp, and short-circuit protection
• 【Precision LED Display with Real-Time Readouts】Professional-grade LED meter shows battery level in 1 % increments plus live voltage and current per port. Tap once for DC, twice for USB/Type-C. Auto-wake and auto-sleep functions prevent power drain for maximum efficiency
• 【Power Your Heat & Charge Devices Simultaneously】Run your 7.4 V heated garment while fast-charging your phone or tablet through USB-A and USB-C at the same time. Stay warm and connected all day—no need to unplug your jacket to charge your tech. (Two DC outputs at once not supported.)
• 【True 20 000 mAh Capacity for All-Day Warmth】High-density cells deliver steady heat for ≈ 6 h on High, 9 h on Medium, or 12 h on Low (depending on garment). Also recharges an iPhone 15 Pro ≈ 4 times. Engineered to minimize voltage drop so your jacket stays hot until the last percent