Brought to you by Bicycle Motor Works - the Ebike Battery with a slim design and a BIG POWER pack!
Please read the full description. Lithium Ion batteries can be dangerously. Make sure you know what you are doing or consult a professional if you are unsure.
DETAILS: 
Contains 70 Genuine, High-Density Samsung 30Q 18650 3000mAh 15amp Cells
52 volts, 15ah (amp hours), 780 watt hours, 14s5p
PERFECT for backpacks!  Fits in the tightest of frames.  
TOUGH, thick rigid casing. Shrink wrapped with THICK rubber outer layer.
 50 amp continuous 100amp maximum BMS
Beefy XT-90-S output connectors with spark resistor
Heavy-Duty XT-60 charge connector
Weight of Battery: 7 pounds, Dimensions: 12X3X5
 SHIPPING:
All E-Bike Battery Packs are shipped in the order it is received. Please allow 4-10 days to ship. Tracking will be sent as soon as it ships. Contact us if you need assistance. 52 volts - The ultimate secret weapon for your 48 volt system. Compatible with 48 volt motors and controllers - plug and play. You'll enjoy more power while gaining more range. It's a win-win!! 15 amp hours translates to 780 watt hours. The more pedal assist (pedals assisting) - the longer the battery will last on a ride. Our 14s 50amp continuous BMS with temperature protection will ensure stability within the battery pack and keep all 70 cells juiced up properly. And don't worry about having too many amps - your controller will only use the amps that it needs. Think of this pack as having amps in reserve if you should ever upgrade your motor/controller. This 52v pack is built with a tight frame for better heat dissipation. Having too much empty air space actually acts as an insulator - trapping the heat inside the pack (think double-pane windows). Connections are made with solid Nickel strips, spot welder to each cell. Each cell and each series is tested before assembly. The BMS will prevent over charging and will balance the cells after a full charge. It makes your battery as safe and as efficient as possible.
WARNING: 
With all rechargeable batteries, please take great care when charging. Never, ever short out the battery in any way. Failure to safely use this battery can result in fire, explosions, destruction, loss of life, loss of marriage, bad burns and an upset stomach.
ONLY CHARGE THIS BATTERY IN A PLACE WHERE YOU WOULDN'T MIND STARTING A FIRE. NEVER LEAVE A CHARGING BATTERY HOME ALONE. Some people put their battery and charger in a BBQ grill with the lid on so that if anything bad happens it would be contained. There are also ammo-boxes and safe, metal boxes for charging battery packs. Basically, use your head.
Charge this pack ONLY with the appropriate lithium ion charger. If you aren't sure which charger you should use please contact us to verify.
Do not open or remove any part of this battery pack. Do not modify the pack in any way - including cutting wires, using connectors that are not compatible with the pack, hard-wiring the pack into a motor or controller, etc. ANY modification of this pack will void any and all warranty, either implied or expressed.
If this pack is damaged or gets wet, do not use it. Danger of fire or thermal runaway of cells can occur, and this can be a life threatening issue. Dispose of a damaged or wet pack immediately by contacting your local hazardous waste disposal office.