GOTOBI RTAX-018A Heated Apparel Battery, 12V, 18,400mAh

GOTOBI RTAX-018A is a rechargeable battery pack for compatible heated clothing that also serves as a phone or tablet power bank. Its listed 12V output and included adapter cables broaden apparel compatibility, but confirm your garment’s voltage and plug before buying.

At a glance

LED display shows remaining battery level, according to the listing.
The listing claims up to 10 hours of heated-apparel runtime, with actual duration dependent on use.
Manufacturer-listed compatibility includes certain 12V apparel and 5V heated gear. Two adapters are claimed to support 3.5mm and 3.8mm connections.
An 18W charging output is claimed for phones and tablets, alongside USB Type-C charging.

Price

$42.98Save 14%

Reference price: ~~$49.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

A compact listed size and 9.8-ounce weight may make it easier to carry in a coat pocket.
Three ports and two claimed adapter cables support a range of charging and apparel connection options.
The display provides a quick view of remaining charge.

Cons

The stated 12V output does not suit 7.4V heated apparel, and compatibility depends on the garment’s voltage and connector.
Customer feedback raises concerns about the advertised capacity and inconsistent battery life.

Technical specifications

13 specifications

Identity
Brand	GOTOBI
Model	RTAX-018A
Color	Black

Power and battery
Power configuration	Corded Electric
Listed capacity	18400 milliamp_hours
Voltage	12 volts
Cell type	Lithium Polymer
Ports	3
Connector type	USB Type C
Battery weight	9.8 ounces

Dimensions
Dimensions listed	3.62 x 2.68 x 1.18 inches

Features
Special features	Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection
Compatible devices	DEWBU heated jacket, Heated jacket, Heated vest, Smartphone, Wulcea heated jacket

What to know before buying

The claimed runtime is up to 10 hours, not a guaranteed duration. The listing also says not to use this pack with 7.4V heated apparel. Confirm your garment’s voltage and plug type, especially before relying on adapter compatibility.

Who is it for?

A good fit for

Owners of compatible 12V heated apparel who want a separate battery pack.
People seeking a portable battery that can also charge phones or tablets.
Outdoor users who value a visible charge indicator and a pocket-sized listed footprint.

Less suited to

Owners of 7.4V heated apparel.
Buyers who need confirmed capacity or predictable runtime, given customer concerns about capacity and battery life.

GOTOBI RTAX-018A Heated Apparel Battery, 12V, 18,400mAh · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 210 ratings

5 stars80%80%
4 stars10%10%
3 stars5%5%
2 stars2%2%
1 star3%3%

Customer feedback is positive about jacket fit, warmth, battery quality and value, but reports are mixed on battery life, including accounts of the pack not fully charging. Some customers also question whether the stated 18,400mAh capacity is accurate. These concerns matter if you depend on long heating sessions or need capacity to match a specific plan. The listing’s runtime and capacity remain manufacturer claims, not independently established measurements.

Positive themes

Customers report that the pack fits well in jackets and praise battery quality and value.

Negative themes

Some customers say the advertised capacity is inaccurate, and some report that the pack will not fully charge.

Mixed feedback

Battery-life feedback is mixed, with reports that it works well alongside reports of charging and runtime concerns.

Frequently asked questions

Will this work with any heated jacket?

No. The listing claims support for compatible 12V apparel and some 5V heated gear, and states that 7.4V apparel is not suitable. Check your garment’s voltage and connector.

What runtime should I expect?

The manufacturer claims up to 10 hours per charge. Runtime varies with the connected garment and use, and customer feedback reports mixed battery-life experiences.

Can it charge a phone?

The listing describes it as a power bank with an 18W output and USB Type-C. It does not establish charging performance for every device.

What is included?

The feature text claims a battery pack, Type-C cable, two DC adapter cables and a user manual. Check the selected listing to confirm the package contents.