Sell TrustFire Waterproof 18650 Battery Power Bank Case Box USB 5V Charging Phone DC8.4V Battery Pack Case Box For Led Bike Light best price

Features: This battery box only fit for 4.2v 18650 li-ion rechargeable battery (please use two same capacity battery for installation). Connect the 8.4Vcharger output port to the battery box D C round port for charging. Battery box round port is connected to 8.4v bike light, it could be output or input 5V USB port only for output, can connect to mobile phones and other digital products. USB power supplies max up to 2100mA greatly shorten charging time. Waterproof grade: IP67. Have overcharge, overdischarge, overcurrent three protection functions. Magic strap to make installation more convenient and fastec. Specifications: USB Port charge mobile phone faster Model: Battery Case Box Materia: ABS Model: EB02, EB03 (Optional) Battery:   EB02: 4 * 18650 Battery (not included)   EB03: 6 * 18650 Battery (not included) Color: Black Quantity: 1pcs Waterproof: IP67 DC interface output & Input voltage: 8.4V DC interface output current: 2000mA USB interface output & Input voltage: 5V USB interface output current: 2100mA Standby current: 75μA Power Supplies: 18650 Battery (not included) Size:     EB02: 49 * 102 * 46mm / 1.9 * 4.0 * 1.8in   EB03: 70 * 102 * 46.2mm / 2.8 * 4.0 * 1.8in Weight:      EB02: 112g / 4.0ounce   EB03: 150g / 5.3ounce Package size:   EB02: 110 * 82 * 50mm / 4.3 * 3.2 * 2.0in   EB03: 110 * 105 * 50mm / 4.3 * 4.1 * 2.0in Package weight:   EB02: 160g / 5.6ounce   EB03: 200g / 7.1ounce Packingg List: 1 * Battery Case Box (Not included Battery)