A removable battery adds practical value for charging and storage.
The included display or control unit adds useful everyday value.
Suspension adds some component value for comfort or control.
The bike has a practical number of gears for varied riding.
The bike appears to be a recent or current model.
The release age is recent, which supports value if pricing is competitive.
86
Excellent braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
Hydraulic disc brakes should provide strong and controlled stopping power.
The brake specification appears to include larger rotors, which can help braking power and heat management.
84
Useful built-in lights
Built-in lights are included, which is useful for commuting and low-light riding.
Built-in lights are included, which is useful for commuting and low-light riding.
The display or control unit may make light and ride-status management easier.
84
Good rider information and controls
The included display or control unit should give useful ride information and control.
The included display or control unit should give useful ride information and control.
Multiple ride modes should give the rider more control over assistance levels.
Built-in lights add useful everyday control and visibility integration.
With stronger motor output, clear controls and ride modes become more useful.
78
Useful removable battery
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.
75
Good downhill control
Front suspension should help with basic control on uneven descents.
Front suspension should help with basic control on uneven descents.
Hydraulic disc brakes should provide controlled braking on descents.
The 29-inch or mullet wheel setup should help stability and control on descents.
The mountain bike design should be better suited to controlled descending.
74
Good power-to-weight ratio
Power-to-weight is above average for this type of e-bike.
Power-to-weight is above average for this type of e-bike.
Motor power is above average for this type of e-bike.
The bike is lighter than many similar e-bikes, which helps the power-to-weight balance.
The calculated power-to-weight score is 23.26.
69
Mixed off-road capability
The mountain bike design should be well suited to off-road riding.
The mountain bike design should be well suited to off-road riding.
Front suspension should help absorb bumps on rougher surfaces.
Hydraulic disc brakes should help with control on loose or uneven terrain.
Torque is low compared with similar e-bikes, which may limit off-road climbing support.
The 29-inch wheel size should help rollover and stability on rougher terrain.
69
Mixed bad-weather practicality
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Built-in lights are useful for rain, low light and darker commutes.
The mountain bike format should offer useful control on rough or slippery surfaces.
Suspension can help control and comfort on rough, wet or uneven surfaces.
The wheel size should be workable for regular poor-weather riding, depending on tyre choice.
Frame material is listed as aluminium, which gives useful durability and maintenance context.
Overview
The Merida eBIG NINE 300 SE is a mountain bike designed for trail riding with a balance of power and practicality. Its 500W motor and 60Nm torque provide smooth support for moderate terrain, though it may struggle on steep inclines. The hydraulic disc brakes offer confident stopping power, and the removable battery adds convenience for charging and storage. While its 504Wh battery offers decent range for shorter rides, longer trips may require careful planning. At 21.5kg, it feels reasonably lively for its category, making it a solid choice for casual trail use without overreaching for heavy-duty performance.
Best For
✓
This mountain e-bike should suit riders who enjoy trail riding and want a balance of performance and practicality. Its hydraulic disc brakes and front suspension provide confident control and comfort over uneven terrain, making it a solid choice for casual to moderate off-road adventures. The removable battery and above-average power-to-weight ratio add flexibility and responsiveness, which can be especially useful for riders who need to carry extra gear or charge the battery conveniently. Riders who prioritize value and reliability in a mountain e-bike may find this model particularly appealing.
Who Should Avoid It
×
Riders who frequently tackle steep hills or need extended range on single days may be better served by comparing similar mountain e-bikes with larger battery capacities or higher torque. The bike's lower battery capacity and moderate torque could limit performance on challenging trails or long rides. However, its strong braking confidence and removable battery still make it a solid choice for riders prioritising value and flexibility in charging options.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
47
Some maintenance considerations
Weak
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The aluminium frame material is practical for everyday use and general maintenance.
Built-in lights reduce the need to manage separate lighting accessories.
The mountain bike format may involve more wear from rougher riding and more complex components.
24
Limited storage practicality
Poor
The frame does not appear to fold, so storage will depend more on size and weight.
The frame does not appear to fold, so storage will depend more on size and weight.
The bike is lighter than many similar e-bikes, which should make storage and moving it around easier.
The removable battery can make storage and indoor charging more flexible.
42
Some lifting limitations
Weak
The bike is lighter than average for its type, which should help day-to-day handling.
The bike is lighter than average for its type, which should help day-to-day handling.
The listed weight is 21.5 kg.
The aluminium frame material is a practical lightweight choice for many e-bikes.
The removable battery can reduce the weight when lifting or moving the bike.
The mountain bike format can be bulkier and harder to lift than simpler urban e-bikes.
The 29-inch wheel size can make the bike more awkward to lift or store.
78
Useful removable battery
Good
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.
51
Average charging speed
Mixed
Charging time is shorter than average for this type of e-bike.
Charging time is shorter than average for this type of e-bike.
The quoted charging time is long in absolute terms.
29
Low battery efficiency
Poor
Battery efficiency appears average for this type of e-bike.
Battery efficiency appears average for this type of e-bike.
The calculated range per battery unit is 99.21.
93
Very well-equipped for daily use
Excellent
Built-in lights add useful everyday practicality.
Built-in lights add useful everyday practicality.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Multiple ride modes should help adapt the bike to different everyday journeys.
Hydraulic disc brakes are useful equipment for confident daily riding.
Payload capacity is average or better, which helps with bags, shopping or daily kit.
69
Mixed bad-weather practicality
Mixed
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Built-in lights are useful for rain, low light and darker commutes.
The mountain bike format should offer useful control on rough or slippery surfaces.
Suspension can help control and comfort on rough, wet or uneven surfaces.
The wheel size should be workable for regular poor-weather riding, depending on tyre choice.
Frame material is listed as aluminium, which gives useful durability and maintenance context.
49
Some family utility limitations
Weak
Payload capacity is above average for this type of e-bike.
Payload capacity is above average for this type of e-bike.
The listed maximum payload should be useful for family or utility riding.
The listed maximum payload is 140 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
Built-in lights are useful for school runs, errands and daily utility riding.
A removable battery makes charging easier around family or utility use.
Where to buy
Priced at £2,100, the Merida eBIG NINE 300 SE looks favourably positioned against similar 2026 mountain e-bikes, offering a competitive entry point for its category. Its value is supported by a well-rounded feature set, though potential trade-offs in component quality may be worth considering.
Compared with similar mountain bike e-bikes on Bikkerr, this model sits £3,558.07 below average
The Merida eBIG NINE 300 SE is listed at £2100, which sits comfortably against similar mountain e-bikes from 2026, offering a price that feels reasonable for the features included. It stands out with a strong power-to-weight ratio and a payload capacity that matches or exceeds many rivals, making it a solid option for riders who need a capable off-road e-bike. However, some similar models may offer a larger battery or more range, which could be important for longer rides or less frequent charging. For a mountain e-bike, the balance of motor support, suspension, and practical features like a removable battery makes this a well-rounded choice, though the trade-off in battery size might matter depending on usage. Riders who prioritise immediate performance and practicality over extended range are likely to see the value here, especially given the strong braking and front suspension that enhance control on rough terrain.
We reach this value score by combining the bike’s price, specification, performance data and comparison against similar e-bikes in our database.
90
The price/value label suggests this bike is very strong value compared with similar options.
The listed price is GBP 2,100.
The bike appears to save around GBP 2,563 versus the average.
Motor power is strong compared with similar e-bikes.
Power-to-weight is strong for the price context.
Payload capacity is strong compared with similar e-bikes.
100W more power10 miles less rangeSame battery2 kg heavier2 more gears
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Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
7
Not ideal for steep hills
Torque is low compared with similar e-bikes.
Torque is low compared with similar e-bikes.
Power-to-weight is above average.
Motor power is above average for this type of e-bike.
The bike has a moderate number of gears for climbing.
The bike is lighter than many similar e-bikes, which should help on climbs.
The calculated power-to-weight score is 23.26.
12
Low battery capacity
Battery capacity is low compared with similar e-bikes.
Battery capacity is low compared with similar e-bikes.
The listed battery capacity should be practical for regular riding.
18
Limited motor punch
Motor power is above average for this type of e-bike.
Motor power is above average for this type of e-bike.
Torque is low compared with similar e-bikes.
Power-to-weight is above average.
The bike is lighter than many similar e-bikes, which should help responsiveness.
The calculated power-to-weight score is 23.26.
24
Limited storage practicality
The frame does not appear to fold, so storage will depend more on size and weight.
The frame does not appear to fold, so storage will depend more on size and weight.
The bike is lighter than many similar e-bikes, which should make storage and moving it around easier.
The removable battery can make storage and indoor charging more flexible.
27
Limited longer-ride suitability
Range is below average compared with similar e-bikes, so longer rides may need more planning.
Range is below average compared with similar e-bikes, so longer rides may need more planning.
Battery capacity is low compared with similar e-bikes.
Battery efficiency appears broadly average.
The removable battery can make charging easier during longer days or multi-stop rides.
Charging time is shorter than average, which can help if topping up between rides.
The display or control unit should make it easier to monitor assistance and battery use on longer rides.
29
Low battery efficiency
Battery efficiency appears average for this type of e-bike.
Battery efficiency appears average for this type of e-bike.
The calculated range per battery unit is 99.21.
37
Some power delivery limitations
Multiple ride modes should help riders choose a smoother level of assistance.
Multiple ride modes should help riders choose a smoother level of assistance.
The included display or control unit should make it easier to manage assistance levels.
Motor power is above average, so smoothness will depend more on the sensor and controller setup.
40
Some commuting limitations
The mountain bike format is less commuting-focused and may be less efficient for daily urban use.
The mountain bike format is less commuting-focused and may be less efficient for daily urban use.
Range is below average, but may still be usable for shorter commutes.
Charging time is average or better, which is useful for regular commuting.
Built-in lights are useful for commuting and low-light riding.
A removable battery makes home, office or indoor charging easier.
The display or control unit should make it easier to monitor assist level and battery use.
Hydraulic disc brakes are a strong practical feature for daily riding.
Payload capacity is strong compared with similar e-bikes, which helps with bags, shopping or extra kit.
The bike is lighter than many similar e-bikes, which helps with daily handling.
E-system & battery comparison
Motor Power
500 watts
▲ 60 W above average
Motor Torque
60 Nm
▼ 18 Nm below average
Power-to-weight
23.26 W/kg
▲ 2.9 W/kg above average
Battery Capacity
504 Wh
▼ 127 Wh below average
Claimed Max Range
50 miles
▼ 11 miles below average
Charge Time
4h 30m
▼ 45 mins faster than average
Removable Battery
Yes
Motor Name
Shimano EP 5 (Shimano STEPS)
This mountain e-bike offers a strong motor output for its category, delivering assistance that should feel lively and responsive on trails, especially when considering its power-to-weight balance. Next to similar e-bikes, its motor support is competitive, though some models may provide stronger climbing or low-speed assistance. The motor should help with moderate climbs and trail riding, but steeper ascents may require more rider effort due to its relatively modest torque. With ride modes available, the assistance can be adjusted for smoother power delivery, though the motor's punch may feel limited in acceleration. Riders looking for a trail-focused e-bike that balances responsiveness with manageable weight and range may find this motor setup well-suited to their needs.
This explanation is based on the bike’s motor power, torque, battery capacity, claimed range, charging
time, sensor type and how those figures compare with similar e-bikes in our database.
eBike FAQs
Is this bike suitable for long off-road rides?
This bike is designed for trail riding and offers decent support for off-road use, but it may not be ideal for long or demanding rides. The 500W motor and 60Nm torque provide smooth assistance for moderate trails, though it may struggle on steep or technical terrain. With a 50-mile range, you'll need to plan charging stops for longer rides, and the lower battery capacity may limit your options on multi-day trips.
How does the motor perform when climbing steep trails?
The motor should provide smooth support for moderate climbs, but it may struggle on very steep trails due to its lower torque. With 500W of power and 60Nm of torque, it's adequate for most trail conditions but not the strongest in its class. Riders tackling steep inclines may need to manage their speed and use lower assist levels for better control.
Does the battery last long enough for multi-day mountain biking trips?
The Merida eBIG NINE 300 SE has a 504Wh battery, which provides a range of around 50 miles on a single charge. For multi-day mountain biking trips, this range may be limiting unless you plan carefully and have access to charging points. The removable battery adds convenience for charging, but you’ll likely need to carry spare batteries or plan your route with charging stops in mind.
How comfortable is this bike on rough terrain and trails?
The Merida eBIG NINE 300 SE offers a reasonably comfortable ride on rough terrain and trails, thanks to its hydraulic disc brakes, which provide confident stopping power even on uneven or muddy surfaces. While the 500W motor and 60Nm torque offer smooth support for moderate trails, the lower torque may feel less responsive on very technical or steep sections. The bike's weight and suspension comfort make it suitable for casual trail riding, but it may not be the best choice for highly demanding off-road conditions or extended technical climbs.
Is this bike a good value option compared to other mountain e-bikes?
This bike offers a strong value for money, especially considering its 500W motor and hydraulic disc brakes, which provide confident braking on trails. While its battery capacity and range are below average for mountain e-bikes, the price point and practical features like the removable battery make it a solid choice for casual trail riding. It may not match higher-end models in endurance or power, but it delivers good performance for its category and budget.
How easy is it to handle and carry this bike around?
The Merida eBIG NINE 300 SE is reasonably easy to handle on trails, with a 21.5kg weight that feels manageable for most riders. The removable battery adds convenience for charging and storage, though the bike's bulk may make it a bit heavier to carry compared to lighter models. It's well-suited for trail use, but if you need to lift or transport it frequently, you may find the weight a bit of a factor.
What are the main limitations of this bike for serious mountain biking?
This bike is well-suited for trail riding but may struggle with serious mountain biking that involves very steep climbs or long, demanding rides. The 60Nm torque and 500W motor provide smooth support for moderate terrain, but lower torque compared to similar bikes could make steep ascents more challenging. The 50-mile range is decent for shorter trips, but multi-day adventures would require careful planning and extra batteries. Hydraulic disc brakes offer confident stopping power on trails, but the overall setup is more geared toward casual trail use than heavy-duty mountain biking.
How does the braking system perform on steep or muddy trails?
The Merida eBIG NINE 300 SE features hydraulic disc brakes, which should provide confident stopping power on steep or muddy trails. These brakes are generally reliable in wet or loose conditions, offering good control and modulation. However, the bike's lower torque and battery capacity may mean you need to manage your speed and approach descents with care, especially on very technical or muddy sections.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2026
The bike was released this year
Screen
Shimano SC-EN500
Lights Included
Yes
Weight (inc battery): 21.5 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 1.5 kg under the average. Total bike weight may vary depending on frame size.
Sizing & Geometry
Min / Max Rider Height
XS 147–155 cm (4'10"–5'1") | S 155–165 cm (5'1"–5'5") | M 165–175 cm (5'5"–5'9") | L 175–186 cm (5'9"–6'1") | XL 186–197 cm (6'1"–6'5")
Adjustable Sizing
Adjustable saddle height
Folded Dimensions
n/a
Wheel & Tire Details
Wheelset Name
Merida Comp CC
Wheelset Size
29 inch
Tires
Kenda Booster
Frame Info
Frame Material
Aluminium
Suspension Type
Front Suspension
Foldable Frame
No
Max Payload
140 kg (308.6 lbs)
Drivechain Details
Groupset details
Shimano Altus / HG300 with Prowheel EB11 crank
Drivechain type
Chain drive
Shifters
Shimano Altus M 315
Amount of gears
9 Gears
Rear Derailleur
Shimano ESSA RD-U 2000
Front Derailleur
None
Cassette
Shimano LG 300 11-45T
Cranks
Shimano FC-EM 600; 165 mm with a Shimano CRE 70-B 34-tooth chainring
Chain
Shimano LG 500
Bottom Bracket
Integrated into the Shimano EP 5 drive unit
Brakes
Brakes
Shimano MT-200
Brake Type: Hydraulic Disc Brakes
Hydraulic operated discs brakes (Very good)
Brake Rotors
Shimano RT 10 180 mm centerlock rotors
Shifters
Shimano Altus M 315
Other Components
Saddle
Unknown
Handlebars
Unknown
Bar Tape
Unknown
Manufactures Info
Worldwide Shipping:
Yes
Delivery across the globe!
Warranty:
2 Years
Limited warranty website average:
3.12 years
You don't need to spend a fortune to enjoy the world of e-biking. Our budget-focused eBIG.NINE 300 SE models deliver a quality ride thanks to an aluminium frame and powerful but refined Shimano EP5 drive unit, but with the convenience of an easily removable externally mounted 504 Wh battery. Powerful, all-weather Shimano hydraulic disc brakes are on hand to keep control and the tough, long-lasting CUES drivetrain offers plenty of gearing for off- ... Read More
You don't need to spend a fortune to enjoy the world of e-biking. Our budget-focused eBIG.NINE 300 SE models deliver a quality ride thanks to an aluminium frame and powerful but refined Shimano EP5 drive unit, but with the convenience of an easily removable externally mounted 504 Wh battery. Powerful, all-weather Shimano hydraulic disc brakes are on hand to keep control and the tough, long-lasting CUES drivetrain offers plenty of gearing for off-road adventures or the city streets. Arguably the most versatile e-bike in our range, the tried and tested eBIG.NINE embodies the perfect balance of day-to-day usability and sporty leisure activity. It's a bike that can handle serious off-road riding but can also handle the commute to work with ease - especially if you want to have some fun on the way. The high-quality aluminium frame integrates a choice of 630 or 750 Wh battery sleekly into the downtube, with a more economical frame featuring semi-integrated 504 Wh battery on some models. All feature powerful and smooth Shimano drive units that will power you up any hill. Ready to be equipped with mudguards and even a side stand (or available as the EQ fully equipped version), the eBIG.NINE will help you make the most of any situation.
