300w Graphene Super Capacitor battery kit

4pc Graphene Super Capacitor Pouch cell 4.2V 42000F 20AH 6C 3pc Pouch cell mounting frames 16v 100ah BMS to suit super capacitors BMS cables and connectors Suitable to make a 300w battery with super fast charge times of 5-15 minutes and up to 30,000 charging cycles. Much safer than chemistry-based batteries. Quick charge: 80% charge in 5-15 minutes. -40℃ to 70℃ range of operating temperature. Suitable for harsh condition. The cells can be put in any enclosure to make a DIY battery.