36v Panasonic 12.5ah Dolphin E-Bike Battery Pack

• On-Off Switch
• USB Charger for your phone etc built into pack
• 4 light battery meter built into pack
• Quick release with key lock
• Comes with downtube mounting hardware to fasten the battery to your Bicycle using the water bottle cage bosses. 
• Hard plastic to protect your pack
• Up to 450-watt hours means incredible range in small package 
• 13s4p = 52 Genuine name brand grade a Panasonic 18650 cells
• Weight of Battery: 7.5 pounds
• Life Span: 400-1000 charges