20000mAh Power Bank for Heated and Cooling Clothing

The cold snaps at the bus stop and your heated jacket keeps its glow because the pack in your pocket still has hours left.

This power bank was built for one job most portable batteries ignore. It carries a 7.4 volt DC round output on top, the connector that fan cooling vests and heated jackets actually plug into, so the garment runs at the voltage it was designed for instead of a makeshift USB workaround.

The shell is matte plastic, rounded at the corners, small enough to sit flat in an inside pocket at 136 by 67.6 by 26.8 millimetres. Four indicator dots sit beside the power button and report the charge left at a glance, and pressing the button steps the output through its four levels so you can dial a liner warmer or a fan faster.

Key Benefits

• Made for powered clothing. The 7.4V DC barrel output matches heated jackets and air conditioning vests, the exact fit their cables expect.
• Four output levels. The button cycles four settings, so a heated liner can idle low or run hot and a fan vest can breeze or blast.
• 20000mAh cell, 12000mAh rated. The lithium polymer cell is marked 20000mAh; the maker rates 12000mAh of usable delivery, honest figures for planning a day out.
• Charges phones too. A USB-A port sits alongside the DC jack, so the same pack tops up a phone or earbuds between garment sessions.
• Pocket format. A flat 26.8mm profile and light plastic body slip into a jacket pocket without pulling it down.
• Guarded circuit. The maker lists built in protection against overcharge and short circuit.

Best for: anyone who wears a heated jacket on a winter commute or a fan cooling vest through a summer shift and wants the right voltage in a pack that also charges a phone.

Why It Works

Most vests and jackets ship with a 7.4V requirement and a barrel plug, and a normal 5V USB pack cannot drive them. This one leads with that DC output, then adds the USB-A port, so a single pocket battery covers the garment and the phone instead of two separate bricks.

Quick Product Facts: lithium polymer cell marked 20000mAh; rated capacity 12000mAh; 7.4V DC round output; USB-A output; USB-C input; four adjustable levels; charging power 15W; maximum output 15W; input 12V; plastic shell; 136 by 67.6 by 26.8 mm; White or Black.

How It Fits Your Routine

In the morning, clip the barrel cable into your heated jacket, tuck the pack in the chest pocket, press once to a low level and let it ride the walk to the station.

In the afternoon, unplug the garment and run the USB-A port to your phone while it sits on the desk, so the battery works indoors and out.

Charge it overnight through the USB-C input; the four dots go solid when it is full and ready for the next cold or hot day.

FAQ

Will it power my heated jacket or fan vest? Yes, if the garment uses a 7.4V DC barrel plug, which most fan and heated jackets do. Check your garment cable before ordering.

How much charge does it really hold? The cell is marked 20000mAh and the maker rates 12000mAh of usable output at 7.4 volts.

Can it charge a phone? Yes, through the USB-A port. Recharge the bank itself through the USB-C input.

What do the four dots mean? They show remaining charge, and the button also steps the DC output through four levels.