Home / PORTABLE POWER BANKS / Square Charge 8400 mAh Square Charge 8400 mAh Double USB output mobile power supply, battery capacity: 8400 mah / 3.7 V Category: PORTABLE POWER BANKS Description Description Double USB output mobile power supply, battery capacity: 8400 mah / 3.7 V Related products PORTABLE POWER BANKS Power Tube 3000 mAh PowerTube 3000 is a sleek, portable power charger that comes in several colors, features an LED indicator light PORTABLE POWER BANKS Mobile Charger PORTABLE POWER BANKS Clear Charger 2600 mAh Single USB output mobile power supply, battery capacity: 2600 mah / 3.7 V PORTABLE POWER BANKS EZ CHARGE 2000 mAh Single USB output mobile power supply Battery capacity: 2000 mah / 3.7 V,