What was recalled
The U.S. Consumer Product Safety Commission (CPSC) has issued a recall notice concerning a specific batch of heated performance socks marketed under the brand name Mi Croteck. These items are formally identified as the Mobile Warming Performance Heated Socks, which are distributed and sold by Tech Gear 5.7. This is not a blanket recall of every sock produced by the company, but rather a targeted action against specific inventory that contains lithium-ion batteries posing safety risks. The recall was officially announced on March 14, 2019, bringing attention to products that had already been in circulation for some time.
The affected product consists of gray socks crafted from a poly-cotton blend, designed to provide warmth through integrated heating elements. These socks are available in both men’s and women’s sizes, specifically covering the ranges of 6-10 and 10-14. The core component that triggers this recall is the lithium-ion battery included with the socks. The product is designed to heat up when the battery is connected and switched to the on position. Users can control the heating function either through a physical switch located on the battery itself or via a smartphone application, provided the phone is paired with the device. It is crucial for consumers to understand that only socks equipped with this specific type of lithium-ion battery are subject to the recall.
To determine if your pair is part of this recall, you must check the serial number printed on the packaging or the product itself. The recall includes only those units bearing one of the following specific serial numbers: MW18A04-17-14, MW18A04-17-15, MW18A04-M4-10/W6-11, and MW18A04-M10-14. If your socks do not match one of these codes, they are not included in this specific safety alert. Approximately 4,000 units of these recalled socks were sold to consumers. While the recall notice does not specify every retail store or online platform where these items were purchased, it emphasizes that any consumer who owns a pair with the listed serial numbers should treat them as potentially hazardous until they have contacted the manufacturer for resolution.
The scope of this recall is defined strictly by the combination of the brand, the model type, and the unique serial identifiers. Tech Gear 5.7 has acknowledged the issue and is standing ready to assist affected customers. If you are unsure whether your product falls under this category, the safest approach is to locate the serial number on your item’s packaging or the device itself and compare it against the list provided above. This precision ensures that only the genuinely at-risk units are identified, allowing consumers to take appropriate action without unnecessary alarm for other products in their wardrobe.
The hazard, explained
At the heart of this recall is a specific failure mode involving lithium-ion batteries, a power source that has become ubiquitous in our daily lives because of its high energy density and lightweight nature. However, with that convenience comes a responsibility for precise electrical management. The recalled Tech Gear 5.7 Performance Heated Socks rely on these lithium-ion cells to generate heat. Under normal circumstances, the battery is designed to work in harmony with the specific charger provided by the manufacturer. This included charger acts as a gatekeeper, regulating the voltage and current to ensure the battery charges safely within its optimal parameters.
The danger arises when this protective relationship is broken. The recall notice explicitly states that the hazard occurs when the socks are charged with a device other than the one provided in the box. Lithium-ion batteries are sensitive to how much energy they take in and how fast. If you use a generic phone charger, a car adapter, or any power bank that does not match the exact electrical profile required by the sock’s battery, the battery can receive too much voltage or current. This is often referred to as overcharging or charging at an unsafe rate.
When a lithium-ion cell is pushed beyond its design limits, the internal chemical reactions can become unstable. Instead of storing energy calmly, the cell begins to generate excess heat internally—a phenomenon known as thermal runaway. In the context of heated socks, this is particularly dangerous because the battery is in direct contact with your skin and enclosed within fabric. As the battery overheats, it can begin to melt its own casing. This physical deformation is a clear warning sign that the chemical containment has failed.
If the situation escalates, the unstable chemicals inside the battery can ignite. This does not always mean a massive, Hollywood-style explosion, but rather a rapid release of heat and potentially flammable gases. For the wearer, this translates to an immediate burn risk. The melted plastic from the battery case can adhere to skin, causing severe thermal burns that are difficult to treat because the burning material stays in contact with the wound. Furthermore, if the igniting battery is near flammable materials like bedding or carpeting, it can spark a fire. While no injuries have been reported in this specific batch of 4,000 units, the potential for harm is real and immediate. The four reported incidents of overheating and melting serve as a stark reminder that lithium-ion batteries do not forgive electrical mismatches. They require exact specifications to remain safe.
Understanding this mechanism helps explain why the remedy is so strict: you cannot simply swap in a different charger to "fix" the issue. The battery itself may have already been stressed by improper charging, making it unpredictable. The only way to eliminate the risk of melt or ignition is to remove the power source entirely and replace the entire unit with one that has passed safety checks using the correct, compatible charging equipment.
Who is most at risk
The primary group at risk for this recall consists of individuals who own and actively use the Mobile Warming Performance Heated Socks, specifically those with the serial numbers MW18A04-17-14, MW18A04-17-15, MW18A04-M4-10/W6-11, and MW18A04-M10-14. These products are designed for men and women in sizes 6-10 and 10-14, meaning the risk is widespread across adult demographics who rely on these socks for warmth during cold weather activities. However, the nature of the hazard—specifically the potential for lithium-ion batteries to overheat, melt, or ignite when paired with incorrect chargers—introduces a layer of vulnerability that extends beyond simple ownership.
While the recall does not specify age groups as being uniquely more susceptible to the mechanical failure itself, the consequences of such a failure can disproportionately affect certain users. Individuals who spend extended periods in cold environments, such as outdoor workers, winter sports enthusiasts, or commuters, may be less likely to notice early warning signs of battery malfunction due to thick gloves or focused attention on their surroundings. This delay in detection can allow a minor overheating event to escalate into a more significant burn hazard before the user realizes something is wrong.
Elderly individuals or those with reduced sensitivity to temperature or pain may face heightened risks. If a battery begins to melt or emit heat that is not immediately perceptible, these users might not react quickly enough to remove the socks and disconnect the power source. This can result in prolonged exposure to high temperatures, increasing the likelihood of thermal burns to the feet and lower legs. Furthermore, individuals with mobility issues who rely on heated gear for comfort and circulation may find it particularly difficult to respond swiftly to an emergency situation involving a malfunctioning electronic component.
Another critical factor is user behavior regarding charging equipment. The hazard arises specifically when users employ chargers other than the one provided by the manufacturer. This suggests that consumers who are less familiar with lithium-ion battery safety protocols, or those who may have lost the original charger and substituted a generic alternative, are at greater risk. These individuals might inadvertently use a charger with incompatible voltage or current specifications, triggering the overheating sequence. Parents of teenagers who use these socks should also be vigilant, ensuring that young users understand the strict requirement to use only the specified charging equipment to prevent accidental misuse.
Ultimately, anyone who has paired their phone app with these socks and uses them regularly is potentially at risk if they deviate from the prescribed charging methods. The integration of smart technology adds a layer of complexity; users who are comfortable with digital controls might overlook the physical safety requirements of the battery unit itself. It is essential for all owners, regardless of age or technical proficiency, to recognize that the convenience of app-controlled heating does not negate the fundamental safety rules associated with lithium-ion power sources.
How to tell if you have the recalled item
Before you take any action or contact the manufacturer, you need to be absolutely certain that your pair of heated socks is part of this specific recall. It is easy to feel anxious when hearing about a safety issue, but taking a few minutes to verify your product details will save you time and ensure you only proceed if necessary. The recall issued by the Consumer Product Safety Commission (CPSC) involves Mobile Warming Performance Heated Socks sold under the brand Mi Croteck. Because these socks are designed for both men and women and come in various sizes, simply looking at the general style or color might not be enough to confirm whether your pair is affected. You must look for specific identifying markers that tie your product directly to the defective batch.
The most reliable way to identify if you have a recalled item is by checking the serial number. The recall specifically targets socks with the following serial numbers: MW18A04-17-14, MW18A04-17-15, MW18A04-M4-10/W6-11, and MW18A04-M10-14. These numbers are typically printed on a label attached to the product packaging or directly on the socks themselves, often near the battery compartment or on the tag inside the cuff. If your serial number does not match one of these four codes exactly, your socks are likely not part of this recall. It is important to be precise here; even a small difference in the alphanumeric code means your product is safe from this specific defect.
In addition to the serial number, you can use other physical characteristics to help narrow down your search. The recalled socks are gray and made from a poly-cotton blend. They are available in men’s sizes 6-10 and women’s sizes 10-14. While color and size can help you eliminate many pairs, they are not definitive proof on their own, as other non-recalled models may share similar appearances. Therefore, the serial number remains your primary verification tool. If you have already discarded the packaging and cannot find the label on the socks, do not worry yet. You can still verify your product by contacting Tech Gear 5.7 directly with any available information, such as purchase receipts or photos of the battery unit.
If you are unsure where to look, check the original box first, as serial numbers are often printed on shipping labels or product stickers there. If the box is gone, inspect the socks closely, particularly near the connection point for the lithium-ion battery. The heating function is controlled via a switch on the battery or through a paired phone app, so the battery unit itself may also have labeling. By carefully checking these specific details against the list provided above, you can confidently determine whether your heated socks require immediate attention or if they are safe to continue using.
What to do — step by step
If you own a pair of these heated socks, the first and most critical action is to immediately stop using them. This is not a situation where you should wait to see if the issue happens again or try to "test" them one more time. The hazard involves the lithium-ion battery potentially overheating, melting, or igniting, which poses a direct fire and burn risk to you and your home. By ceasing use right now, you eliminate the immediate danger of heat buildup while the socks are active.
The next essential step is to physically remove the battery from the socks. The recalled items are Mobile Warming Performance Heated Sells sold with lithium-ion batteries, and the heating mechanism is activated when the battery is connected and set to the on position. Even if you have turned the switch off, leaving the battery attached can still present a risk, particularly if it were to be jostled or accidentally activated in a bag or drawer. Carefully disconnecting the power source ensures that the faulty component is isolated from the product you are holding.
Once the socks and battery are separated, do not attempt to dispose of the lithium-ion battery in your regular household trash. Lithium-ion batteries can be hazardous if damaged or improperly discarded. Instead, keep the battery aside for now, as you will need to coordinate its return or disposal as part of the remedy process. Then, reach out to Tech Gear 5.7 to initiate the recall process. You can contact them toll-free at 888-908-6024 between 7 a.m. and 5 p.m. Pacific Time, Monday through Friday. Alternatively, you may send an email to cs@techgear5-7.com or visit www.mobilewarming.com and click on “Recall Information” for online instructions.
When you contact the company, they will provide specific instructions on how to proceed. In this recall, Tech Gear 5.7 is offering consumers a choice between receiving a free replacement pair of socks with a new battery or obtaining a full refund. Follow their guidance carefully regarding shipping labels and packaging. It is important to complete this process as soon as possible to ensure your safety and to resolve the issue efficiently. If you have already experienced any issues with the battery, such as overheating or melting, mention this when you contact them, although no injuries have been reported in the incidents associated with this recall.
Your refund, repair, or replacement options
If you have determined that you own one of the recalled Mobile Warming Performance Heated Socks, your primary course of action is to stop using them immediately and remove the lithium-ion battery. Once you have taken this critical safety step, you are eligible for a remedy offered directly by the manufacturer, Tech Gear 5.7. The company has established two distinct paths for resolution: you can choose to receive a free replacement pair of socks that includes a new, safe battery, or you can opt for a full refund of your original purchase price. This decision is entirely yours, and the company aims to make either process as straightforward and stress-free as possible.
To initiate either option, you must contact Tech Gear 5.7 directly. They have provided several convenient methods to reach their customer support team. You may call their toll-free number at 888-908-6024. If you prefer written communication, you can send an email to cs@techgear5-7.com. Alternatively, for those who prefer navigating online resources, you can visit the official website at www.mobilewarming.com and click on the “Recall Information” section for further details and instructions. It is important to note that these customer service lines are operational from 7 a.m. to 5 p.m. Pacific Time, Monday through Friday. If you attempt to contact them outside of these hours or on weekends, you may encounter automated messages or hold times, so planning your outreach during business hours will likely result in the most efficient service.
When you reach out to Tech Gear 5.7, be prepared to provide specific details about your product to help them verify your eligibility quickly. While the recall notice does not explicitly list every document required for the refund or replacement process, it is standard practice to have your proof of purchase ready. More importantly, you must confirm that your socks match one of the specific serial numbers included in this recall: MW18A04-17-14, MW18A04-17-15, MW18A04-M4-10/W6-11, or MW18A04-M10-14. These serial numbers are the definitive identifier for the affected units. Without this information, the company may not be able to confirm that your item is part of the batch posing the fire and burn hazard.
The choice between a replacement and a refund often depends on your personal preference and immediate needs. If you still rely on heated socks for outdoor activities or cold-weather comfort, the free replacement pair with a new battery may be the more practical option, allowing you to continue using the product safely without additional cost. However, if you have lost confidence in the brand due to the incident reports or simply no longer need the item, a full refund provides a clean financial resolution. In either case, Tech Gear 5.7 is responsible for facilitating the remedy at no charge to you. Do not hesitate to ask any clarifying questions during your contact with them to ensure you understand the timeline for receiving your replacement or processing your refund.
What can happen if you ignore it
It is completely understandable to feel hesitant about taking extra steps when a product recall is involved. You might think the risk is low, especially since the company has stated that no injuries have been reported yet. However, ignoring a safety notice regarding lithium-ion batteries is never a gamble worth taking. The core issue here is not just a malfunction; it is a fundamental failure of safety design under specific conditions. When you continue to charge these heated socks with any adapter other than the one originally provided, you are bypassing the electrical safeguards built into the system. Chargers vary significantly in their voltage output and current regulation. Using an incorrect charger can cause the lithium-ion battery inside the sock to overheat rapidly. This is not a minor glitch; it is a thermal runaway event where the heat generated exceeds the battery's ability to dissipate it safely.
The consequences of this overheating are severe and immediate. As noted in the incident reports, the batteries can melt or even ignite. We have already seen cases where the plastic casing of the battery melted due to excessive heat. If you ignore the recall, you are leaving yourself vulnerable to these exact outcomes. Ignition means fire. A lithium-ion battery fire burns hot and fast, often releasing toxic fumes in the process. While the current reports mention only minor property damage from melting cases, the potential for a full-blown fire is real. This could lead to significant damage to your home, your furniture, or other belongings if the battery ignites while you are charging them overnight or while you are asleep.
Beyond property damage, the personal risk is substantial. Burns are the most likely direct injury from a melting or exploding battery pack. Because the socks are worn directly against the skin, a failure during use could cause serious thermal burns to your feet and legs. Even if you are not wearing them at the moment of ignition, the fire itself poses a severe threat to your physical safety. The fact that there have been no reported injuries so far is fortunate, but it does not mean the risk is absent. It simply means that bad luck has not yet struck. Continuing to use these items with improper chargers keeps you in the path of that potential danger.
Furthermore, ignoring the recall creates a false sense of security. You might believe that because nothing happened last time, it will be fine next time. But battery failures are often unpredictable and can escalate quickly without warning. By refusing to comply with the remedy, you are essentially gambling with your safety and your property for no real gain. The inconvenience of sending them back is temporary; the consequences of a fire or burn could be lifelong. Please do not let convenience override caution. The potential cost of ignoring this recall is far too high to justify doing nothing.
Staying safe: broader tips
When it comes to personal electronics that generate heat, such as heated clothing, electric blankets, or portable power devices, the line between cozy comfort and potential fire hazard is often determined by how we care for these items over time. While this specific recall highlights the dangers of using incompatible chargers with lithium-ion batteries, the broader lesson applies to nearly every consumer product that relies on rechargeable cells: always respect the manufacturer’s charging ecosystem. Using a charger with different voltage or amperage specifications can disrupt the delicate internal chemistry of the battery, leading to overheating, swelling, or in worst-case scenarios, ignition. It is never worth the risk to "make do" with a generic adapter just because the original one was lost; replacement parts designed specifically for your device are the only safe option.
Beyond charging habits, regular visual and physical inspections of your gear can catch problems before they escalate. For any heated wearable or electronic blanket, check for frayed wires, cracked casings around battery compartments, or unusual warmth during use. If a device feels hot to the touch when it shouldn’t be, or if you notice a burning smell, disconnect it immediately and do not attempt to recharge it. These are early warning signs that the internal protection circuits may have failed. Keeping your devices in a cool, dry place away from direct sunlight also helps preserve battery health and prevents thermal degradation over time.
Another critical step in long-term safety is proactive awareness of product recalls. Many people do not realize that they can register their purchases with manufacturers or sign up for alerts from the Consumer Product Safety Commission (CPSC). By registering warranties or subscribing to email notifications, you ensure that if a defect is discovered later in a product’s life cycle, you are among the first to know. This proactive approach can save you time and, more importantly, prevent accidents caused by outdated or faulty equipment.
Finally, consider creating a safe charging routine for all your electronics. Avoid leaving devices charging unattended overnight or while you are away from home, especially if they are on flammable surfaces like beds or couches. Lithium-ion batteries are generally safe when used correctly, but they require vigilance. By treating these components with respect and adhering to safety guidelines, you can enjoy the convenience of modern technology without compromising your home’s safety.