Graphene Battery Extension
100% usable capacity. Ultra-fast charging. Fireproof and designed for extreme conditions.
The Barrel Graphene Battery Extension is the safest and most advanced storage module in the off‑grid market. It delivers full discharge capability, ultra‑fast recharge (up to 5 cycles per day), and absolute stability in all climates — from desert heat to freezing temperatures. Built for resilience, safety, and performance, it’s the new standard in sustainable energy storage.
Key advantages
100% Usable Capacity
Delivers the full 4.8 kWh energy every cycle — no protection buffer like lithium systems.
Ultra-Fast Charging
Supports up to five full charge/discharge cycles per day, multiplying throughput and autonomy.
Absolute Safety
Fireproof and non‑explosive. Can be pierced, hit, or dropped without thermal runaway.
Extreme Temperature Resistance
Performs from −20°C to +60°C — ideal for desert, tropical, and alpine environments.
Unmatched Durability
50,000+ cycles and 15+ years lifetime — far beyond standard lithium.
Technical datasheet
Packaging & Logistics
Pallet details
- 4 units per pallet – 60 × 60 × 60 cm – total 120 / 140 kg
- HS Code: 8507.60 (Graphene-ion accumulators)
- ISPM-15 certified packaging
Compliance & shipping
- UN38.3 compliant, air‑freight certified
- Ports: Venice or Genoa (Italy)
- Documentation: CE / Euro 1 / MSDS / ISPM‑15
Graphene vs Lithium
| Feature | Graphene | Lithium |
|---|---|---|
| Usable Capacity | 100% | 90% |
| Charge Speed | Up to 5 cycles/day | 1 cycle/day |
| Safety | Fireproof / Non-explosive | Risk of thermal runaway |
| Temperature Range | −20°C to +60°C | 0°C to +50°C |
| Cycle Life | 50,000+ | ~6,000 |
| Air Transport | Yes | Limited |
| Lifetime | 15+ years | 5–7 years |