# TLDR Review: LEJIEYIN Temperature Control Mug

*Published: 2025-12-28 | Updated: 2025-12-28 | Source: https://shopsavvy.com/reviews-tldr/lejieyin-temperature-control-mug*

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## Product: LEJIEYIN Temperature Control Mug
**Brand:** LEJIEYIN

## Pros
- Keeps beverages warm for extended periods, even in cold conditions (36°-48°F), maintaining coffee, tea, or hot chocolate temperature all day.
- Built with good quality materials and appears durable with effective temperature control.
- Heats liquids to the desired temperature reliably and automatically stops heating when liquid drops below 5-6 oz for safety.
- Convenient for use in a car with a 12V cigarette lighter connection and designed to fit standard car cup holders.
- Features an attractive LCD digital touch control for precise temperature adjustments.
- Easy to clean when hand washing, as the removable parts are designed for convenient washing.
- Performs better and is more reliable than many other cheaper or similar travel heating mugs.
- Stylish and functional, making it a great gift for coffee or tea lovers on the go.

## Cons
- Several users reported the product stopped working quickly (as soon as 3 days to 6 weeks) due to connection or power cord issues, including melted cords.
- Warranty service and customer support appear ineffective or unresponsive, creating frustration for users with malfunctioning units.
- Programming the temperature setting can be difficult despite following instructions.
- The power plug is somewhat tricky—it requires two hands to unplug and can be challenging to insert securely.
- Requires using a cord plugged into the car, which some find less convenient than cordless travel mugs.
- If the removable washable part is not screwed in tightly, the device shows errors or heating failures.
- Reliability and longevity are questionable based on multiple users experiencing early failures.

## Bottom Line

This temperature control travel mug by LEJIEYIN offers solid temperature maintenance, safety features, and convenient car compatibility with a sleek LCD display, making it a smart option for hot beverage lovers on the move. However, it carries potential reliability risks—particularly around the power cord and electrical connections—that may impact durability. If you want a dependable travel mug with excellent heating and temperature control, this is a decent choice but be prepared for possible troubleshooting or poor customer support. For a cordless, more hassle-free experience, you might want to explore alternative travel mugs that don't rely on a wired 12V connection.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Keeps beverages warm for extended periods, even in cold conditions (36°-48°F), maintaining coffee, tea, or hot chocolate temperature all day. | Several users reported the product stopped working quickly (as soon as 3 days to 6 weeks) due to connection or power cord issues, including melted cords. |
| Built with good quality materials and appears durable with effective temperature control. | Warranty service and customer support appear ineffective or unresponsive, creating frustration for users with malfunctioning units. |
| Heats liquids to the desired temperature reliably and automatically stops heating when liquid drops below 5-6 oz for safety. | Programming the temperature setting can be difficult despite following instructions. |
| Convenient for use in a car with a 12V cigarette lighter connection and designed to fit standard car cup holders. | The power plug is somewhat tricky—it requires two hands to unplug and can be challenging to insert securely. |
| Features an attractive LCD digital touch control for precise temperature adjustments. | Requires using a cord plugged into the car, which some find less convenient than cordless travel mugs. |
| Easy to clean when hand washing, as the removable parts are designed for convenient washing. | If the removable washable part is not screwed in tightly, the device shows errors or heating failures. |
| Performs better and is more reliable than many other cheaper or similar travel heating mugs. | Reliability and longevity are questionable based on multiple users experiencing early failures. |
| Stylish and functional, making it a great gift for coffee or tea lovers on the go. |  |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*