You can test our bags together with our rental bikes – for a weekend or more.
Pickup available at Turnerstrasse 37, 8006 Zürich (Auf Termin)
Usually ready in 5+ days
The Sunslice Gravity Extreme series was developed for demanding environments, combining performance, durability, and compactness in a modern design.
Thanks to IP67 certification, the devices are shockproof, waterproof, and sandproof – perfect for outdoor adventures, travel, and professional use.
Cable included: USB-C (1m)
Available in two variants:
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Gravity 10 Extreme – with 10,000 mAh capacity and 20W USB-C PD, it offers fast charging for smartphones, cameras, drones, and other devices.
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Gravity 20 Extreme Pro – with 20,000 mAh capacity and 60W USB-C PD, it even allows charging laptops and particularly power-intensive devices – ideal for longer trips or professional field operations.
Both models are compact, lightweight (259-505 g) and compatible with all Sunslice solar panels, which guarantees a reliable power supply in complete autonomy.
Whether on a mountain tour, expedition, or camping – the Gravity Extreme series is the perfect combination of robustness and power for anyone who doesn't want to do without energy and efficiency on the go.
Gravity 10 Extreme:
Capacity : 10000 mAh
Output :
- USB-C PD 20W | 5V/3A, 9V/2.22A, 12V/1.67A,
- USB-A QC3.0 18W | 5V/3A, 9V/2A, 12V/1.5A
Input : USB-C PD 18W | 5V/3A, 9V/2A
Dimensions : 140 x 73 x 17 mm
Weight : 259g
Charging Status : 4 LED indicators
1 Mounting Point
LED Lamp
Optional :
- Emperion - Fast Charger
- Gravity 10 Extreme charges in 1h30 with the Emperion 45W
- Gravity 10 Extreme charges in 12 hours with a standard charger
Gravity 20 Extreme:
Capacity : 20'000 mAh
Output:
- USB-C1 PD 60W | 5V/3A, 9V/3A, 12V/3A, 15V/3A,
20V/3A - USB-C2 PD 20W | 5V/3A, 9V/2.22A, 12V/1.67A
- USB-A QC3.0 18W | 5V/3A, 9V/2A, 12V/1.5A
Input : USB-C1 PD 100W | 5V/3A, 9V/3A, 12V/3A, 15V/3A,
20V/3A
Dimensions: 180 x 82 x 30 mm
Weight: 505g
Charging Status: 4 LED indicators
1 Mounting Point
LED Lamp
Optional :
- Emperion - Fast Charger
- Gravity 20 charges in 1h10 with the Emperion 65
PRO - Gravity 20 Extreme charges in 12 hours with a standard charger
About Sunslice
Sunslice was founded by two best friends – both passionate engineers – who wanted to create an efficient solar charger they could use on their long hiking trips.
They dreamed of having an infinite source of energy at all times. They envisioned a credit card-sized solar charger – so thin it would fit in a wallet and always be within reach. A true slice of sunshine. Thus, Sunslice was born.
Since then, Sunslice has developed a wide range of energy solutions, progressively becoming a globally recognized and innovative player in the solar charger industry.