HIMONI YJ-781C 20,000mAh Heated-Apparel Battery Pack

Heated-Apparel: The HIMONI YJ-781C is a 20,000mAh battery pack listed for DC 12V and USB 5V heated apparel, with a claimed 4–12 hours of operation. Its stated compatibility excludes DC 7.4V clothing, so verify your garment’s voltage and connector before buying.

At a glance

Listing claims support for DC 12V and USB 5V heated apparel and estimates 4–12 hours of operation, depending on use.
USB-C connector, digital display, and auto shut-off are listed features.
The listing explicitly says it is not suitable for DC 7.4V heated clothing.
The seller claims an 18W input and output and about 7 hours to recharge the pack.

Price

$31.99Save 20%

Reference price: ~~$39.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The stated capacity and USB-C connector may suit buyers needing a rechargeable pack for compatible heated apparel.
A digital display provides a listed way to check battery information, while auto shut-off is also claimed.

Cons

Compatibility is voltage-specific, excluding DC 7.4V apparel and potentially limiting use with garments that do not match the stated outputs.

Technical specifications

13 specifications

Identity
Brand	HIMONI
Model	YJ-781C
Color	Black
Battery capacity	20000 milliamp_hours
Battery cell type	Lithium Polymer

Power and connections
Power configuration	Corded Electric
Voltage	12 volts
Connector type	USB Type C
Number of ports	3

Features and compatibility
Special features	Auto Shut-Off, Digital Display
Compatible devices	Heated Vest, dewalt heated jacket, dewbu heated jacket, heated jacket, heated jackets for men

Dimensions and installation
Dimensions listed	4 x 2.7 x 1 inches
Battery weight	10 ounces

What to know before buying

Listing details to confirm

The listing is inconsistent about weight: one feature claim says 9.8 ounces, while the technical details state 10 ounces. Runtime of 4–12 hours, 18W charging, and about 7-hour recharge are manufacturer claims, not independently established performance. Check your garment's voltage and connector, since customer feedback reports mixed compatibility and does not establish fit with every brand.

Who is it for?

A good fit for

Owners of DC 12V or USB 5V heated apparel who can confirm the required connector and output.
Buyers seeking one pack that the listing says can also charge phones and other devices.

Less suited to

Owners of DC 7.4V heated clothing.
Buyers who need confirmed compatibility with a specific garment model without first matching its voltage and connector.

HIMONI YJ-781C 20,000mAh Heated-Apparel Battery Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 91 ratings

5 stars75%75%
4 stars7%7%
3 stars2%2%
2 stars5%5%
1 star11%11%

Customer feedback highlights reported battery life lasting for hours and positive impressions of battery quality. Compatibility is mixed, including reports of incompatibility with Hot Wired gear, and opinions on value are divided. These comments are relevant because the pack is intended for heated apparel, but they do not establish compatibility with a particular garment. Aggregate ratings lean positive overall, while the distribution also includes lower ratings, so they should not be read as proof of universal fit or performance.

Positive themes

Customers report battery life lasting for hours and speak positively about battery quality.

Mixed feedback

Compatibility feedback is mixed, with some customers reporting it does not work with Hot Wired gear.
Opinions on value for money are divided.

Frequently asked questions

Will this battery work with a DC 7.4V heated jacket?

The listing explicitly says it is not suitable for DC 7.4V heated clothing.

How long does the battery last?

The listing claims 4–12 hours, but runtime can depend on the connected apparel and its operating settings. The figure is not independently verified.

Can it charge a phone?

The listing describes charging an iPhone and other devices, and customer feedback also mentions phone charging. Confirm the connection and output your device needs.

What should I check before buying?

Match your heated apparel's voltage and connector to the pack. The listing names DC 12V and USB 5V apparel, but customer feedback indicates compatibility is not universal.