Walkie pallet truck and straddle stacker on 24 V lithium — the dock-lane and narrow-aisle half of the Granvolt range.
The line
| Specification | ST15 | ST20 |
|---|---|---|
| Type | Walkie pallet truck | Electric straddle stacker |
| Rated capacity | 1,500 kg | 2,000 kg |
| Battery | 24 V lithium, 60 Ah | 24 V lithium, 80 Ah |
| Lift | Fork height 85–200 mm | 3,000 mm (max 5,300 mm) |
| Key systems | Travel 6 km/h; electromagnetic braking; compact 685 mm chassis | Lift speed 0.12 m/s; fork width 550–1,150 mm; tiller-arm emergency reverse |
| Certification | CE | CE |
| Typical duty | Loading docks, retail backroom, cold storage | Narrow-aisle stacking, mezzanine feeding |
Where the line earns its keep
The ST15 answers the dock and backroom question: doors and lanes narrower than racking aisles, volumes beyond a manual jack, and cold corners where gloved hands end manual work — the electric-versus-manual guide draws that line.
The ST20 answers the racking question: straddle legs reach under standard pallets so the aisle never carries a counterweight swing, and the 5,300 mm maximum lift is the number that sets how tall narrow-aisle steel can go — the high-rack and aisle-width guides carry the geometry.
Both run 24 V lithium and charge anywhere a truck parks, which is why the series pairs with EP counterbalance trucks on mixed sites without a shared charging point.
The dock-lane workhorse.
The narrow-aisle racking workhorse.
Send your duty cycle, loads and site conditions — engineering responds within 12 hours on average.
Cold storage, ports & heavy industry, construction and farms — scenario-first matching across the range.
Selection guides, comparisons and maintenance notes from the Granvolt engineering team.