Wallke Ultra Series
The flagship of Wallke's patented Off-grid PowerStorage platform. Choose a step-thru or step-over frame and a 55Ah or 77Ah energy-storage battery — a pack that peaks at 4000W, charges over solar and turns the bike into a portable power station with 130+ miles of range.
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Out in the World
Wallke Ultra Series in the Wild
Up Close
Detail Gallery
The Engineering
What Makes The Wallke Ultra Series Tick
Off-Grid PowerStorage
World-first energy-storage e-bike
Portable Power Station
The patented pack has USB-A, USB-C and a solar input — the world's first e-bike battery built to power your life off-grid.
Up To 77Ah
A 55Ah or 77Ah (55+22) energy-storage pack for genuine touring range.
Solar Charging
Top it up from a folding solar panel when you're miles from an outlet.
Power & Drive
2000W nominal · 4000W peak
Strong Hub
A 48V hub rated 2000W nominal and up to 4000W peak with torque-sensor assist.
Single Or AWD
Step-over and step-thru builds, single-motor or all-wheel drive.
130+ Miles
Wallke claims 130+ miles of pedal-assist range on the big pack.
Two Frames
Step-thru & step-over
Step-Thru
A low, easy over-the-top frame for relaxed on/off access.
Step-Over
A sportier classic diamond frame for a planted feel.
Full Suspension
Suspension fork and coil rear shock over fat Arisun tires.
The Cockpit
The Off-Grid Flagship
Solar Input + USB Power Out + Torque Sensor
The Ultra Series is where Wallke's whole idea comes together: a bike whose battery is a certified portable power station, with solar input and USB outputs built in.
Pick the frame that fits — low step-thru or classic step-over — add the 55Ah or 77Ah pack, and you've got a torque-sensor fat-tire cruiser that can keep your camp powered for days.
The Numbers
Full Specifications
Source: wallkeebike.com →⚡ E-System
🚦 Performance
🔧 Chassis & Brakes
✨ Options
The Bike Cave Verdict
Ben's Take
The Ultra Series is Wallke's halo product — the fullest expression of the Off-grid PowerStorage idea. A battery that's genuinely a portable power station (solar in, USB out), up to 77Ah of it, wrapped in a torque-sensor fat-tire cruiser you can order as a step-thru or step-over. If the off-grid angle matters to you — van life, camping, emergencies — nothing else at this price does it quite like this. As ever, the 130+ mile claim is one I'll want to verify on camera.
👍 What stands out
- World-first off-grid PowerStorage battery (solar + USB out)
- Up to 77Ah energy-storage pack
- Step-thru or step-over frame choice
- Torque-sensor assist, 4000W peak
- 130+ mi claimed range
👎 What to know
- Not yet reviewed on camera — figures are claims
- Huge energy-storage packs are heavy
- Top build pushes past $3,000
- Overlaps the H7/H9 Ultra trims