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Energy Sistem FS3 Review | 130 Data compared

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  • Avg. price: ~£25
  • Audio output power: 20.00 W
  • Battery life: 10 hours
  • IP rating: ?
  • Bluetooth version: 5.0
  • Weight: 822 g

Energy Sistem FS3 review. Compare 130 technical specifications and user reviews to see how this product ranks in the Portable Speakers category and whether it is worth buying.

7.1

Overall score

What it is: An overall evaluation of products in the Portable Speakers category, based on technical analysis and user reviews.

When it matters: When you need a quick reference for identifying the best products in the Portable Speakers category.

Score components:

80.0%

6.6

Technical Score

20.0%

9.2

User score

Very good
6.6

Technical Score

What it is: An assessment of technical performance for products in the Portable Speakers category across these key areas: Audio, Connectivity, Battery, Durability, Controls, Design, Smart features.

When it matters: When you want to compare products in the Portable Speakers category by technical performance, specifications, and available features.

Score components:

32.0%

5.8

Audio

20.0%

6.7

Battery

18.0%

7.5

Durability

16.0%

6.9

Connectivity

8.0%

6.9

Controls

3.0%

8.4

Design

3.0%

5.0

Smart features

Good
9.2

User score

What it is: A rating that combines user reviews with the total review volume for products in the Portable Speakers category.

When it matters: When you want to know how products in the Portable Speakers category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

8.8

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.4
(320)

(Reviews last updated: August 2026)

Exceptional
  • 8.5
    Outdoor durability

    Score components:

    40.0%

    10

    Water resistance

    25.0%

    ?

    IP rating

    20.0%

    9.4

    Weight

    15.0%

    4.0

    Battery life

  • 5.3
    Powerful sound

    Score components:

    45.0%

    3.1

    Audio output power

    25.0%

    4.0

    Battery life

    15.0%

    9.4

    Weight

    15.0%

    10

    Party mode

  • 4.6
    Home listening

    Score components:

    35.0%

    4.0

    Multi-room support

    30.0%

    4.0

    Wi-Fi connectivity

    20.0%

    3.1

    Audio output power

    15.0%

    9.4

    Weight

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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Energy Sistem FS3 is a portable Bluetooth 5.0 speaker featuring a 2.0 stereo sound system with two 2.25-inch full-range drivers, a dual-membrane passive bass radiator, and 20W of output power. Key characteristics include True Wireless Stereo (TWS) technology to pair two units, a built-in noise-canceling microphone for hands-free calls and smartphone voice assistants, splash-proof fabric styling, and multiple playback inputs via USB, microSD (up to 64GB), and a 3.5mm audio jack. Main pros are its lightweight 1,830 cm³ urban design, a 2-hour fast charging time via USB Type-C, an extended wireless connectivity range of up to 20 meters, and a solid battery life reaching up to 10–12 hours. However, notable cons include its lack of robust water or sweat resistance ratings and the absence of an integrated battery level indicator.

Technical Specifications of portable speaker Energy Sistem FS3

Technical Score

What it is: An assessment of technical performance for products in the Portable Speakers category across these key areas: Audio, Connectivity, Battery, Durability, Controls, Design, Smart features.

When it matters: When you want to compare products in the Portable Speakers category by technical performance, specifications, and available features.

Score components:

32.0%

5.8

Audio

20.0%

6.7

Battery

18.0%

7.5

Durability

16.0%

6.9

Connectivity

8.0%

6.9

Controls

3.0%

8.4

Design

3.0%

5.0

Smart features

6.6
Energy Sistem FS3 has a technical score of 6.6 points, which is lower than 62.5% of products in this category.
User score

What it is: A rating that combines user reviews with the total review volume for products in the Portable Speakers category.

When it matters: When you want to know how products in the Portable Speakers category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

8.8

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.4
(320)

(Reviews last updated: August 2026)

9.2
Energy Sistem FS3 has a user score of 9.16 points, which is higher than 80.1% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by products in the Portable Speakers category.
When it matters: When you prefer products in the Portable Speakers category that have been chosen and reviewed by many other buyers.
10
Energy Sistem FS3 has a popularity of 10 points, which is higher than 66.6% of products in this category.
Ratio quality/price

What it is: An indicator that combines the overall score of products in the Portable Speakers category with their prices.

When it matters: When you are comparing products in the Portable Speakers category and want a good balance between quality and price.

Score components:

60.0%

7.1

Overall score

40.0%

10

Price

8.0
Energy Sistem FS3 has a quality-to-price ratio of 8 points, which is higher than 68.5% of products in this category.
Audio output power
What it is: The maximum continuous power the speaker system can deliver.
When it matters: When you need enough output to fill a larger or noisier space.

Importance: HIGH

Good value: >= 20 W

20.00 W
Energy Sistem FS3 has an audio output power of 20.00 W which is higher than that of 46.1% of portable speakers and equal to that of 11.4% of portable speakers.
Total RMS output: 20.00 W.
Driver unit size
What it is: The diameter of each main speaker driver.
When it matters: When the size of the main driver influences bass reach and output capability.

Importance: HIGH

Good value: >= 50 mm

45.00 mm
Energy Sistem FS3 has a driver unit size of 45.00 mm which is smaller than that of 60.9% of portable speakers and equal to that of 8.6% of portable speakers.
Primary driver diameter: 45.00 mm.
Number of drivers
What it is: The total number of speaker drivers built into the unit.
When it matters: When fuller driver arrays and broader sound coverage matter.

Importance: MEDIUM

Good value: >= 2

2
Energy Sistem FS3 has 2 drivers, which is more than 24.5% of portable speakers and equal to the number in 45.5% of portable speakers.
Acoustic drivers: 2.
Frequency response tolerance
What it is: The allowed deviation around the stated frequency response curve.
When it matters: When a flatter and more accurate frequency response matters.

Importance: MEDIUM

Good value: <= 3 dB

?
Lowest frequency
What it is: The lowest audible frequency the speaker can reproduce.
When it matters: When deeper bass extension matters.

Importance: HIGH

Good value: <= 60 Hz

80.00 Hz
Energy Sistem FS3 has a lowest frequency of 80.00 Hz which is higher than that of 68.5% of portable speakers and equal to that of 9.4% of portable speakers.
Lower frequency-response endpoint: 80.00 Hz.
Show more
Bluetooth connectivity
What it is: Indicates whether the speaker can receive audio over Bluetooth.
When it matters: When wireless playback from phones, tablets, or computers matters.

Importance: MEDIUM

Good value: yes

yes
Energy Sistem FS3 supports Bluetooth audio. 5.4% of portable speakers offer this feature.
Bluetooth version
What it is: The generation of Bluetooth supported by the speaker hardware.
When it matters: When compatibility and efficiency with newer Bluetooth devices matter.

Importance: LOW

Good value: >= 5.0

5.0
Energy Sistem FS3 supports Bluetooth version 5.0 which is newer than that of 46.3% of portable speakers and equal to that of 24.4% of portable speakers.
Bluetooth version: 5.0.
Maximum Bluetooth range
What it is: The farthest distance at which the Bluetooth link can remain usable.
When it matters: When the source device may be far from the speaker.

Importance: MEDIUM

Good value: >= 10 m

20.00 m
Energy Sistem FS3 has a maximum Bluetooth range of 20.00 m which is longer than that of 78.7% of portable speakers and equal to that of 6.4% of portable speakers.
Maximum Bluetooth range: 20.00 m.
Bluetooth profiles supported
What it is: The Bluetooth operating profiles available for playback, control, or calls.
When it matters: When Bluetooth playback, control, and call compatibility depend on specific profiles.

Importance: LOW

A2DP; AVRCP; HFP; HSP
Bluetooth LE Audio
What it is: Shows whether the speaker supports the low-energy Bluetooth audio standard.
When it matters: When newer low-power Bluetooth audio features matter.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not support Bluetooth LE Audio. 2.5% of portable speakers offer this feature.
Show more
Battery life
What it is: The playback time available from one full battery charge.
When it matters: When you need longer playback between charges.

Importance: HIGH

Good value: >= 20 h

10 hours
Energy Sistem FS3 has a battery life of 10 hours which is shorter than that of 53.9% of portable speakers and equal to that of 12.9% of portable speakers.
Battery capacity
What it is: The amount of electrical charge the internal battery can store.
When it matters: When longer untethered playback or power-bank use needs more stored charge.

Importance: HIGH

Good value: >= 5000 mAh

3,000 mAh
Energy Sistem FS3 has a battery capacity of 3,000 mAh which is larger than that of 58.8% of portable speakers and equal to that of 3.8% of portable speakers.
Charging time
What it is: The time needed to recharge the battery fully.
When it matters: When the speaker needs to be ready again quickly.

Importance: MEDIUM

Good value: <= 4 h

2 hours
Energy Sistem FS3 has a charging time of 2 hours which is shorter than that of 72.9% of portable speakers and equal to that of 22.6% of portable speakers.
Maximum charging input power
What it is: The maximum charging power the speaker can accept from a compatible power source.
When it matters: When faster charging requires the speaker to accept more input power.

Importance: LOW

Good value: >= 20 W

?
Built-in rechargeable battery
What it is: Indicates whether the speaker uses a battery that can be recharged.
When it matters: When portable use without disposable batteries or continuous mains power matters.

Importance: LOW

Good value: yes

yes
Energy Sistem FS3 has a built-in rechargeable battery. 18.7% of portable speakers offer this feature.
Show more
IP rating
What it is: The ingress protection code for dust and water resistance.
When it matters: When dust and water protection need to match the intended environment.

Importance: HIGH

Good value: IP67+

?
Water resistance
What it is: Indicates whether the enclosure can resist water exposure.
When it matters: When the speaker may be used near pools, rain, or splashes.

Importance: MEDIUM

Good value: yes

yes
Energy Sistem FS3 is water resistant. 38.3% of portable speakers offer this feature.
Dust resistance
What it is: Shows whether the enclosure is protected against dust ingress.
When it matters: When the speaker may be exposed to sand, soil, or dusty environments.

Importance: MEDIUM

Good value: yes

no
Energy Sistem FS3 is not rated as dust resistant. 51.5% of portable speakers offer this feature.
Waterproof depth rating
What it is: The maximum water depth the speaker is rated to withstand.
When it matters: When the speaker may be submerged or used very close to water.

Importance: MEDIUM

Good value: >= 1 m

?
Drop resistance
What it is: Indicates whether the housing is designed to survive accidental drops.
When it matters: When the speaker may be bumped or suffer an accidental fall during outdoor or travel use.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 lacks an impact-resistance rating. 32.8% of portable speakers offer this feature.
Show more
On-device controls placement
What it is: The physical area of the speaker where its controls are located.
When it matters: When you want controls that are easy to reach in the speaker intended placement.

Importance: LOW

top
Touchscreen
What it is: Indicates whether a touch-sensitive screen is integrated.
When it matters: When direct visual control is more convenient than buttons or an app.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not have a touchscreen. 0.3% of portable speakers offer this feature.
The speaker does not have an integrated touchscreen.
Smartphone app control
What it is: Shows whether the speaker can be controlled from a phone app.
When it matters: When remote settings, updates, or sound adjustment from a phone matter.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not support smartphone app control. 54% of portable speakers offer this feature.
No compatible mobile app for speaker control.
Remote control
What it is: Indicates whether a dedicated remote control is supplied or supported.
When it matters: When you want to control playback from across the room.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not include a remote control. 15% of portable speakers offer this feature.
No dedicated remote control is documented.
Fast pairing
What it is: Shows whether setup with compatible devices can be completed more quickly.
When it matters: When quick setup with compatible devices matters.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not support fast pairing. 22.5% of portable speakers offer this feature.
No qualifying fast-pair capability; initial pairing is manual or standard.
Show more
Weight
What it is: The total mass of the portable speaker.
When it matters: When carrying the speaker frequently or packing light matters.

Importance: LOW

Good value: <= 1000 g

822 g
Energy Sistem FS3 weighs 822 g which is heavier than that of 50.8% of portable speakers.
Height
What it is: The vertical external dimension of the speaker body.
When it matters: When the speaker must fit beneath shelves or in a compact bag.

Importance: LOW

Good value: <= 20 cm

22.6 cm
Energy Sistem FS3 has a height of 22.6 cm which is taller than that of 83.7% of portable speakers and equal to that of 0.1% of portable speakers.
Width
What it is: The side-to-side external dimension of the speaker body.
When it matters: When the speaker must fit a narrow shelf, bag, or tabletop.

Importance: LOW

Good value: <= 25 cm

9 cm
Energy Sistem FS3 has a width of 9 cm which is narrower than that of 79.7% of portable speakers and equal to that of 1.6% of portable speakers.
Depth
What it is: The front-to-back depth of the speaker housing.
When it matters: When the speaker should take up less front-to-back space.

Importance: LOW

Good value: <= 10 cm

9 cm
Energy Sistem FS3 has a depth of 9 cm which is deeper than that of 54.4% of portable speakers and equal to that of 1.9% of portable speakers.
Carry options
What it is: The available ways to carry, hang, or attach the speaker.
When it matters: When a handle, strap, or attachment point changes how you carry the speaker.

Importance: LOW

handle
Show more
Companion app name
What it is: The official app used to control settings and functions of the speaker.
When it matters: When app compatibility and the available control features depend on the official app.

Importance: LOW

?
Firmware updates
What it is: Indicates whether the speaker can receive firmware revisions after purchase.
When it matters: When post-purchase fixes and feature improvements matter.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not support firmware updates. 47.2% of portable speakers offer this feature.
No supported user-accessible firmware update path.
Firmware update method
What it is: The path used to install firmware updates on the speaker.
When it matters: When the convenience and reliability of installing updates matters.

Importance: LOW

?
Voice assistant support
What it is: Indicates whether the speaker can work with supported voice assistants.
When it matters: When hands-free control through a compatible assistant matters.

Importance: LOW

Good value: yes

?
Spotify Connect
What it is: Shows whether Spotify can stream directly to the speaker over the network.
When it matters: When Spotify should stream directly without keeping phone audio active.

Importance: LOW

Good value: yes

no
Energy Sistem FS3 does not support Spotify Connect. 10.8% of portable speakers offer this feature.
Does not support native Spotify Connect.
Show more

Energy Sistem FS3 vs the average portable speaker

  • 10 m longer Bluetooth range
    Energy Sistem FS3 has a longer Bluetooth range than the average portable speaker (20 m vs 10 m).
    Maximum Bluetooth range: 20.00 m.
    What it is: The farthest distance at which the Bluetooth link can remain usable.
    When it matters: When the source device may be far from the speaker.

    Importance: MEDIUM

    Good value: >= 10 m

    Energy Sistem FS3 has a longer Bluetooth range than the average portable speaker (20 m vs 10 m).20.00 m vs 10 m
  • 10 more adjustable EQ bands
    Energy Sistem FS3 has more adjustable EQ bands than the average portable speaker (10 vs 0).
    10 app eq bands.
    What it is: The number of adjustable equalizer frequency bands available in the app.
    When it matters: When fine-grained sound adjustment in the companion app matters.

    Importance: LOW

    Good value: >= 5 bands

    Energy Sistem FS3 has more adjustable EQ bands than the average portable speaker (10 vs 0).10 vs 0
  • Has a noise-canceling microphone
    Energy Sistem FS3 has a noise-canceling microphone, while the average portable speaker does not have a noise-canceling microphone.
    Uses microphone noise/echo cancellation for calls or voice.
    What it is: Indicates whether the microphones can reduce surrounding noise during capture.
    When it matters: When calls or voice commands must remain clear around background noise.

    Importance: LOW

    Good value: yes

    Energy Sistem FS3 has a noise-canceling microphone, while the average portable speaker does not have a noise-canceling microphone.
  • 1 hours shorter charging time
    Energy Sistem FS3 has a shorter charging time than the average portable speaker (2 hours vs 3 hours).
    What it is: The time needed to recharge the battery fully.
    When it matters: When the speaker needs to be ready again quickly.

    Importance: MEDIUM

    Good value: <= 4 h

    Energy Sistem FS3 has a shorter charging time than the average portable speaker (2 hours vs 3 hours).2 hours vs 3 hours
  • 1 more USB ports
    Energy Sistem FS3 has more USB ports than the average portable speaker (2 vs 1).
    Physical USB ports: 2.
    What it is: The number of USB ports available on the speaker.
    When it matters: When several wired accessories or storage devices need USB connections.

    Importance: LOW

    Good value: >= 1

    Energy Sistem FS3 has more USB ports than the average portable speaker (2 vs 1).2 vs 1
  • Supports party mode
    Energy Sistem FS3 supports party mode, while the average portable speaker does not support party mode.
    Supports synchronized multi-speaker party/group playback.
    What it is: Indicates whether multiple speakers can play the same audio together.
    When it matters: When several compatible speakers should play together.

    Importance: LOW

    Good value: yes

    Energy Sistem FS3 supports party mode, while the average portable speaker does not support party mode.
  • Has a USB Type-C port
    Energy Sistem FS3 has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
    Has a physical USB-C port.
    What it is: Indicates whether the device uses a USB Type-C connector.
    When it matters: When modern charging and connection compatibility matter.

    Importance: LOW

    Good value: yes

    Energy Sistem FS3 has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
  • Has an external memory card slot
    Energy Sistem FS3 has an external memory card slot, while the average portable speaker does not have an external memory card slot.
    Has a removable memory-card slot for playback.
    What it is: Indicates whether removable memory cards can be inserted for playback.
    When it matters: When playing files directly from removable storage matters.

    Importance: LOW

    Good value: yes

    Energy Sistem FS3 has an external memory card slot, while the average portable speaker does not have an external memory card slot.
  • Has a noise-canceling microphone
    Energy Sistem FS3 has a noise-canceling microphone, while the average portable speaker does not have a noise-canceling microphone.
  • 10 m longer Bluetooth range
    Energy Sistem FS3 has a longer Bluetooth range than the average portable speaker (20 m vs 10 m).
  • 1 more USB ports
    Energy Sistem FS3 has more USB ports than the average portable speaker (2 vs 1).
  • Has a USB Type-C port
    Energy Sistem FS3 has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
  • Has an external memory card slot
    Energy Sistem FS3 has an external memory card slot, while the average portable speaker does not have an external memory card slot.
  • 1 hours shorter charging time
    Energy Sistem FS3 has a shorter charging time than the average portable speaker (2 hours vs 3 hours).
  • 400 mAh more battery capacity
    Energy Sistem FS3 has a larger battery capacity than the average portable speaker (3,000 mAh vs 2,600 mAh).
  • 10 more adjustable EQ bands
    Energy Sistem FS3 has more adjustable EQ bands than the average portable speaker (10 vs 0).
  • Supports party mode
    Energy Sistem FS3 supports party mode, while the average portable speaker does not support party mode.
  • Supports playback mute
    Energy Sistem FS3 supports playback mute, while the average portable speaker does not support playback mute.
  • 9.1 cm narrower
    Energy Sistem FS3 is narrower than the average portable speaker (9 cm vs 18.1 cm).

Total
Overall
Audio
Connectivity
Battery
Controls
Design
  • 2,000 Hz lower maximum frequency
    Energy Sistem FS3 has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).
    Upper frequency-response endpoint: 18000 Hz.
  • 20 dB lower signal-to-noise ratio
    Energy Sistem FS3 has a lower signal-to-noise ratio than the average portable speaker (60 dB vs 80 dB).
    Signal-to-noise ratio: 60.00 dB.
  • 20 Hz less deep bass extension
    Energy Sistem FS3 has less deep bass extension than the average portable speaker (80 Hz vs 60.00 Hz).
    Lower frequency-response endpoint: 80.00 Hz.
  • 5 mm smaller main driver
    Energy Sistem FS3 has a smaller main driver than the average portable speaker (45 mm vs 50.00 mm).
    Primary driver diameter: 45.00 mm.
  • 2 hours shorter battery life
    Energy Sistem FS3 has a shorter battery life than the average portable speaker (10 hours vs 12 hours).
  • Is not rated as dust resistant
    Energy Sistem FS3 is not rated as dust resistant, while the average portable speaker is dust resistant.
  • Does not support smartphone app control
    Energy Sistem FS3 does not support smartphone app control, while the average portable speaker supports smartphone app control.
    No compatible mobile app for speaker control.
  • 10.2 cm taller
    Energy Sistem FS3 is taller than the average portable speaker (22.6 cm vs 12.4 cm).
  • Is not rated as dust resistant
    Energy Sistem FS3 is not rated as dust resistant, while the average portable speaker is dust resistant.
    What it is: Shows whether the enclosure is protected against dust ingress.
    When it matters: When the speaker may be exposed to sand, soil, or dusty environments.

    Importance: MEDIUM

    Good value: yes

    Energy Sistem FS3 is not rated as dust resistant, while the average portable speaker is dust resistant.
  • Does not support smartphone app control
    Energy Sistem FS3 does not support smartphone app control, while the average portable speaker supports smartphone app control.
    No compatible mobile app for speaker control.
    What it is: Shows whether the speaker can be controlled from a phone app.
    When it matters: When remote settings, updates, or sound adjustment from a phone matter.

    Importance: LOW

    Good value: yes

    Energy Sistem FS3 does not support smartphone app control, while the average portable speaker supports smartphone app control.
  • 2,000 Hz lower maximum frequency
    Energy Sistem FS3 has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).
    Upper frequency-response endpoint: 18000 Hz.
    What it is: The highest audible frequency the speaker can reproduce.
    When it matters: When upper-treble extension and high-frequency detail matter.

    Importance: MEDIUM

    Good value: >= 20000 Hz

    Energy Sistem FS3 has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).18000 Hz vs 20000 Hz
  • 20 dB lower signal-to-noise ratio
    Energy Sistem FS3 has a lower signal-to-noise ratio than the average portable speaker (60 dB vs 80 dB).
    Signal-to-noise ratio: 60.00 dB.
    What it is: The ratio between the wanted audio signal and background noise.
    When it matters: When cleaner audio with less background noise matters.

    Importance: MEDIUM

    Good value: >= 80 dB

    Energy Sistem FS3 has a lower signal-to-noise ratio than the average portable speaker (60 dB vs 80 dB).60.00 dB vs 80 dB
  • 20 Hz less deep bass extension
    Energy Sistem FS3 has less deep bass extension than the average portable speaker (80 Hz vs 60.00 Hz).
    Lower frequency-response endpoint: 80.00 Hz.
    What it is: The lowest audible frequency the speaker can reproduce.
    When it matters: When deeper bass extension matters.

    Importance: HIGH

    Good value: <= 60 Hz

    Energy Sistem FS3 has less deep bass extension than the average portable speaker (80 Hz vs 60.00 Hz).80.00 Hz vs 60.00 Hz
  • 2 hours shorter battery life
    Energy Sistem FS3 has a shorter battery life than the average portable speaker (10 hours vs 12 hours).
    What it is: The playback time available from one full battery charge.
    When it matters: When you need longer playback between charges.

    Importance: HIGH

    Good value: >= 20 h

    Energy Sistem FS3 has a shorter battery life than the average portable speaker (10 hours vs 12 hours).10 hours vs 12 hours
  • 5 mm smaller main driver
    Energy Sistem FS3 has a smaller main driver than the average portable speaker (45 mm vs 50.00 mm).
    Primary driver diameter: 45.00 mm.
    What it is: The diameter of each main speaker driver.
    When it matters: When the size of the main driver influences bass reach and output capability.

    Importance: HIGH

    Good value: >= 50 mm

    Energy Sistem FS3 has a smaller main driver than the average portable speaker (45 mm vs 50.00 mm).45.00 mm vs 50.00 mm
  • 10.2 cm taller
    Energy Sistem FS3 is taller than the average portable speaker (22.6 cm vs 12.4 cm).
    What it is: The vertical external dimension of the speaker body.
    When it matters: When the speaker must fit beneath shelves or in a compact bag.

    Importance: LOW

    Good value: <= 20 cm

    Energy Sistem FS3 is taller than the average portable speaker (22.6 cm vs 12.4 cm).22.6 cm vs 12.4 cm
Total
Audio
Battery
Durability
Controls
Design

Graphic comparison of Energy Sistem FS3 and other products in the Portable Speakers category

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
4.4
320 Reviews

(Reviews last updated: August 2026)

What customers like about Energy Sistem FS3?

  • Excellent value for money
  • Compact and highly portable pocket-sized design
  • Very clear vocals and high frequencies
  • Surprisingly loud audio output for its small size
  • Versatile connectivity options including Bluetooth 5.0, USB, MicroSD, and 3.5mm Aux
  • Built-in FM radio functionality
  • Supports True Wireless Stereo (TWS) pairing with a second unit
  • Aesthetically pleasing fabric finish and good overall build quality

What customers dislike about Energy Sistem FS3?

  • Weak or limited bass performance
  • Sound can feel slightly muffled or lacking depth compared to premium brands
  • Actual battery life under continuous use can be significantly shorter than advertised
  • No digital screen display, making it difficult to know which FM radio station is selected
  • Lacks a rubber or silicone exterior coating, leaving it potentially vulnerable to drop damage

Expert reviews

C
ceotech.it
12/11/2021
Summary of the review
Energy Sistem Speaker FS3 CeoTech Review
(Translated)Show original

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Portable Speakers

7.8
altec-the-jacket
Altec The Jacket

Portable Speakers

7.7
tronsmart-mirtune-h1
Tronsmart Mirtune H1

Portable Speakers

7.7
musibaby-m68
Musibaby M68

Portable Speakers

7.6
xiaomi-bluetooth-speaker-mini
Xiaomi Bluetooth Speaker Mini

Portable Speakers

7.5
tronsmart-element-t2-plus
Tronsmart Element T2 Plus

Portable Speakers

7.5
pure-jongo-t2
Pure Jongo T2

Portable Speakers

7.5
grundig-gbt-club
Grundig GBT Club

Portable Speakers

7.4
anker-soundcore-mini-3
Anker Soundcore Mini 3

Portable Speakers

7.4
tronsmart-t7-mini
Tronsmart T7 Mini

Portable Speakers

7.4
homespot-extreme
Homespot Extreme

Portable Speakers

7.4

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