NOW AVAILABLE: Bicycle Motor Works Premium 48v eBike Battery Collection, Made in the U.S. with Genuine Certified Premium Cells, Designed for High Performance and Durability - for all-weather riders. 
 
- Replacement eBike Batteries - (customization consulting available).
- Built with Grade-A 21700 cells.
- Upgrade your current pack with power you can rely on.
- Longer Lifespan, Built for Performance and Reliablity.
- Wide variety of premium cell options.
- Full customer service always available.
 
Cell & Capacity Options:
 
Samsung 40T - med-high current cells
Samsung 50S - medium current cells
Molicel P42A - high current cells
Molicel P45B - ULTRA high current cells 
Molicel P50B - ULTRA high current cells
 
Please read the full description and ask any questions you may have before making a purchase. NOTE: Lithium ion batteries can be dangerous, please consult a professional if you are unsure. It is mandatory for you to read, understand and agree to our Terms and Conditions before making a purchase. Please read all of our materials in the Resource Center.
 
Highlights:
 
◦ Size: 11.5 x 3 x 4 inches
◦ Awesome battery made of top quality components.
◦ 13s4p - 52 Genuine, Grade-A 21700 cells.
◦ 60 amp continuous 100amp maximum BMS
◦ * Temperature Protected. 
                * Ling XT-90s lead wire connector. NO SPARKS!
◦  XT60 lead for charger
◦ Life Span: 400-1000 charges
 
This 48v 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 and Copper, spot welder to each cell. Each cell and each series is tested before assembly. The BMS will prevent over charging, over discharging and will balance the cells after a full charge. It basically makes your battery as safe and as efficient as possible.
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.
 
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 co tact 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.