Electric bikes

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electric bike on hill


eBig Nine 500 EQ



Avg price


Member Reviews

  • Type


  • Frame type

    Full frame

Merida is a huge brand that usually offers good-value bikes – the eBig Nine is no exception. It’s versatile: most at home on trails or a long commute, but it’s not out of place in the city (though it’s not as convenient as a step-through design).

It uses a STEPS 7000 motor with lots of power and torque – it’s the most refined Shimano motor we’ve tried. The “trail” mode in particular responds brilliantly to rider input up to its 32km/h limit.

The eBig Nine is efficient to pedal, with a comfortable riding position. It’s a fun bike to ride, with lively but balanced handling that creates confidence on all surfaces.

The Merida comes with a very good suspension fork and its wide-range 10-speed gears were appreciated by our testers. While it has full mudguards and a rear rack, there’s no chain guard fitted.

Overall, the eBig Nine is good value for a versatile “do-everything” bike.

Test results

  • 75
    Motor system
  • 81
    Bike style
  • 73
    Motor - Responsiveness
  • 70
    Motor - Hill climbing
  • 80
    Motor - Speed assistance
  • 90
    Motor - Interface
  • 77
    Bike - Slow speed
  • 87
    Bike - Riding fast
  • 80
    Bike - Rough terrain
  • 80
    Bike - Practicality

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Good points

  • Good motor responsiveness.
  • Good motor assistance climbing hills.
  • Very good motor assistance at speed.
  • Motor assists to 32 km/h.
  • Excellent display and controls.
  • Bike is very good to pedal quickly.
  • Bike has good slow speed balance.
  • Bike copes very well on rough surfaces.
  • Has rear rack, metal mudguards and a rear-mount kickstand.
  • Has built in lights.
  • Has hydraulic disc brakes.
  • Has a suspension fork.
  • Available with smaller wheels (Big Seven model).

Bad points

  • Only comes in a full frame style.

How we test

Each e-bike was taken on a test route by two riders. The 5km route in and around Wellington’s CBD included city traffic, fast flat roads, hills, kerbs, wooden bridges and a busy waterfront path shared with pedestrians.

We also put the e-bikes through a gruelling 20km route around Wellington’s Wadestown and Northland suburbs. The main challenge was climbing a 2km-long hill five times at a steady 20km/h (a kilometre of vertical ascent) and descending the same twisty narrow road between climbs. It also included a short, steep section of rough path with a narrow barrier negotiated at walking pace, an undulating 5km of suburban streets, and a steep descent requiring brakes to keep the e-bike to the 50km/h speed limit.

Our riding tests, along with a static assessment of the features and functions of each e-bike, were used to score the performance of the motor system and the bike. Overall score includes:

Motor system (50% of overall score)

  • starting, stopping and responsiveness (40% of motor system score)
  • hill climbing assistance (30%)
  • controller and display (20%)
  • high-speed assistance (10%).

Bike (50% of overall score)

  • uphill and slow riding performance, ease of mounting and dismounting, off-bike handling (50% of bike score)
  • downhill and fast flat riding stability, safety and comfort (30%)
  • comfort and safety on bumpy and rough surfaces (20%).


  • Avg price


  • Type


  • Frame type

    Full frame

  • Alternative frame type


  • Sizes available

    M / L / XL


  • Motor brand


  • Motor model

    STEPS e7000

  • Motor location


  • Power


  • Max assist torque


  • Max assist speed


  • Assist settings


  • Walk mode

  • Thumb throttle

  • Battery size


  • Battery location

    Down tube


  • Wheel size


  • Tyre width


  • Tyre tread


  • Mudguards


  • Kickstand

    Rear mount

  • Rear rack (l x w cm)

  • Gears

    10 / Trigger

  • Suspension fork (travel)

    Sintour 100mm

  • Suspension seatpost

  • Lights

  • Brakes

    Disc (hydraulic)

More info

  • Notes

    Big Seven model also available (27.5"wheels, XS / S / M)