Pioneering Energy Storage
POWERING
THE FUTURE
OF ENERGY
Modular battery storage, marine power systems, and EV charging infrastructure. Designed, developed, and manufactured in the UK.
Flagship ProductExplore ChargeQube
CHARGEQUBE
Modular, containerised energy storage and EV charging. From 100kWh to 1MWh, deployable in under 2 hours with zero on-site emissions.
200kWh
CQ Core
Euro-pallet. Forklift-movable.
450kWh
CQ Evo
10ft ISO. Full EMS integration.
1MWh
CQ Titan
20ft ISO. Off-grid hybrid.
1MWh
Max Capacity
240kW
Rapid Charge
In Production
61kWh
280kW Peak Discharge
Marine SolutionsUNIVERSAL
Explore Marine Range
UNIVERSAL
BATTERY PACKS
Engineered for marine vessels. IP67-rated enclosures, advanced thermal management, and CCS DC fast charging. From ribs to large cruisers.
61kWh
UBP61L
Under-deck. 280kW peak. CCS <1hr charge.
21kWh
UBP21
Compact. Outboards, ribs, canal boats.
Full RangeBATTERY PACKS FOR
BATTERY PACKS FOR
ALL APPLICATIONS
Our HeritageFROM CLASSIC CARS
FROM CLASSIC CARS
TO ENERGY STORAGE
Fellten began by electrifying icons — the Classic Mini, Porsche 911, and Land Rover Defender. That deep expertise in battery systems now drives our energy storage solutions.
Same team. Same engineering precision. Bigger mission.
Read Our StoryGet StartedREADY TO POWER
READY TO POWER
YOUR FUTURE?
Whether you need modular EV charging, marine battery systems, or custom energy storage — we're here to help.