Our Verdict
Tikom V850 Wins

It offers vastly superior suction power at 50000 Pa compared to Ljuren's 12000 Pa, combined with double the maximum runtime at 70 minutes and a larger 1.8L dustbin, all for only $20 more. The Ljuren K-21B is a better pick for those on a strict sub-$100 budget or for users prioritizing an explicitly stated lighter 5.5 lb vacuum for quick, less demanding cleans.
Bottom Line: Tikom V850 is the better choice. It offers vastly superior suction power at 50000 Pa compared to Ljuren's 12000 Pa, combined with double the maximum runtime at 70 minutes and a larger 1.
In-Depth Analysis
How they compare in practice
The Ljuren K-21B and Tikom V850 present two distinct propositions in the cordless vacuum market, with the Tikom V850 largely outperforming its counterpart in core cleaning metrics. The most striking difference lies in suction power: the Tikom V850 boasts an exceptional 50000 Pa, which is over four times that of the Ljuren K-21B's 12000 Pa. In practical terms, this means the Tikom will deliver a far more effective deep clean, effortlessly tackling embedded dirt, pet hair, and larger debris from carpets and hard floors alike. The Ljuren, while capable for light surface dust, will struggle significantly with more demanding messes.
Runtime is another critical differentiator. The Tikom V850 offers an impressive 70 minutes of maximum runtime on a single charge, providing ample time to clean larger homes or multiple rooms without interruption. The Ljuren K-21B, by contrast, provides up to 35 minutes, limiting its utility to smaller spaces or quick spot cleaning tasks. Even in boost mode, the Tikom delivers 30 minutes of high power compared to the Ljuren's 15 minutes, highlighting the Tikom's sustained cleaning capability.
Further enhancing the Tikom's utility is its larger 1.8L dustbin capacity, a 50% increase over the Ljuren's 1.2L bin. This reduces the frequency of emptying, a valuable convenience during longer cleaning sessions. While the Ljuren explicitly states its weight at 5.5 lbs, making it undeniably lightweight and agile, the Tikom is also described as lightweight. The Tikom also adds value with features like an LED touch screen for intuitive control and an anti-tangle brush for pet hair, which the Ljuren lacks. For a marginal price difference of $20, the Tikom V850 provides a substantial leap in performance and features, making it a superior value for most demanding users.
Key Differences
The most significant spec differences at a glance
Suction Power
76% lessRuntime Minutes Max
50% lessWeight
100% moreDustbin Capacity Ml
33% lessRuntime Minutes Boost
50% lessAdvantages
Where each product wins
Tikom
- Suction Power: 76% higher (12000 vs 50000)
- Runtime Minutes Max: 50% higher (35 vs 70)
- Weight: 100% lower (5.5 vs 0)
- Dustbin Capacity Ml: 33% higher (1200 vs 1800)
- Runtime Minutes Boost: 50% higher (15 vs 30)
Which to Pick for Your Situation
Concrete scenarios with a clear recommendation
For deep cleaning carpets with pet hair
TikomThe Tikom V850's 50000 Pa suction power is far more effective at lifting embedded pet hair from carpets than the Ljuren's 12000 Pa.
For quick tidying in a small apartment
LjurenThe Ljuren K-21B's lighter 5.5 lb design and $99.99 price make it a more accessible and maneuverable option for routine, lighter cleaning tasks.
For cleaning a multi-story house without frequent recharging
TikomThe Tikom V850 offers an impressive 70 minutes of maximum runtime, allowing for extended cleaning sessions across larger areas compared to Ljuren's 35 minutes.
For users on a strict budget under $100
LjurenPriced at $99.99, the Ljuren K-21B fits within a tighter budget, offering essential cordless vacuuming capabilities for its price point.
Who Should Buy Which?
Find the right product for your needs
Buy Ljuren if...
Ljuren Cordless Vacuum Cleaner,
The Ljuren K-21B is an excellent fit for the budget-conscious consumer who needs a reliable, lightweight cordless vacuum for everyday, light-duty cleaning. This ideal buyer might reside in a small apartment, dorm room, or as a secondary vacuum for quick spot cleans in a larger home. Their primary needs revolve around convenience and maneuverability; at a mere 5.5 lbs, the Ljuren is effortless to carry up stairs, reach high corners, or navigate around furniture without fatigue. Priced at $99.99, it's particularly appealing to those with a strict budget under $100 who still expect modern features like HEPA filtration for improved air quality and a self-standing design for easy storage. While its 12000 Pa suction and 35-minute maximum runtime are sufficient for surface dirt on hard floors and light carpets, this user doesn't require industrial-strength cleaning power for embedded pet hair or extensive deep-pile carpets. They prioritize an agile, accessible tool for daily maintenance over premium performance, gladly trading off the higher suction and extended runtime of more expensive models for a financially sensible and easy-to-use cleaning solution.
Buy Tikom if...
Tikom V850 Cordless Vacuum
The Tikom V850 caters to homeowners or pet owners who demand superior cleaning performance and extended endurance without breaking the bank. This buyer likely lives in a larger home with a mix of floor types, including medium to high-pile carpets, and may contend with significant pet hair. Their top priority is powerful suction, and the Tikom delivers an impressive 50000 Pa, ensuring effective removal of deeply embedded dirt, dander, and stubborn pet fur. They also value long cleaning sessions, making the 70-minute maximum runtime a crucial feature that allows them to clean multiple rooms or an entire house on a single charge. The larger 1800 ml dustbin capacity further supports these extended cleaning jobs by reducing interruptions for emptying. While willing to pay slightly more at $119.98, this buyer sees the Tikom as a substantial upgrade over basic models, appreciating its advanced features like an anti-tangle brush and LED touch screen. They are looking for a primary household vacuum that offers robust power and convenience, making the minor inconvenience of a wall-mounted dock a small trade-off for its overall strong performance and excellent value proposition.
Spec Comparison
11 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $95 | $120 |
| Rating | — | 5.0(33) |
| Suction Power Pa | 12000 | 50000 |
| Runtime Minutes Max | 35 min | 70 min |
| Weight | 5.5 lbs | 0 lbs |
| Dustbin Capacity ml | 1200 | 1800 |
| Model Number | K-21B | V850 |
| Self Standing | Yes | Yes |
| Hepa Filtration | Yes | Yes |
| Charge Time Hours | 4 hrs | — |
| Swappable Battery | Yes | Yes |
| Runtime Minutes Boost | 15 min | 30 min |
| Attachments Count | — | 2 |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
Ljuren Cordless Vacuum
- Lightweight design at 5.5 lbs.
- 12 kPa suction power handles embedded dirt.
- 35-minute run time on standard power setting.
- Detachable battery enables convenient charging.
- Strong suction mode limits runtime to 15 minutes.
- Battery requires 4 hours for a full charge.
Tikom V850 Cordless
- 50Kpa suction power cleans diverse floor types.
- 70 min runtime on low suction for extended use.
- 1.8L dust cup capacity reduces emptying frequency.
- Self-standing design allows convenient pauses.
- High suction mode limits runtime to 30 minutes.
- Wall-mounted charging dock requires installation.
- 1.8L dust cup might add to vacuum's size.
Frequently Asked Questions
Common questions about this comparison
How does the suction power compare between the Ljuren K-21B and the Tikom V850?
The Tikom V850 boasts a powerful 50000 Pa suction, significantly outperforming the Ljuren K-21B's 12000 Pa. This makes the Tikom much more effective for deep cleaning and stubborn dirt.
Which vacuum offers a longer cleaning time on a single charge?
The Tikom V850 provides up to 70 minutes of maximum runtime, whereas the Ljuren K-21B offers up to 35 minutes. For extended cleaning, the Tikom is the clear winner.
Is either vacuum better for pet owners?
Yes, the Tikom V850 is superior for pet owners due to its 50000 Pa suction power and anti-tangle brush, which effectively handles pet hair on various surfaces. The Ljuren's 12000 Pa may struggle with embedded pet fur.
What is the dustbin capacity difference?
The Tikom V850 has a larger 1800 ml dustbin, allowing for less frequent emptying compared to the Ljuren K-21B's 1200 ml capacity.
How does the weight compare, and does it affect portability?
The Ljuren K-21B is explicitly stated at 5.5 lbs, making it very lightweight and easy to maneuver for quick tasks or overhead cleaning. The Tikom is also described as lightweight but does not list a specific weight in lbs.
Does either vacuum have a swappable battery?
Yes, both the Ljuren K-21B and the Tikom V850 feature swappable batteries. This allows users to extend cleaning time by having a charged spare battery or easily replace an aging battery.
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