NTS Bicycle Battery

Our standard cargo bicycle battery packs have 50 cells arranged in a tight grid and separated with fire resistant barriers.  This yields over 500 watt-hours of energy which is around twice as much energy as most bicycle packs.  The voltage is 36 volts nominal so it has 50% more energy than a 24 volt battery with the same amp-hour rating.

What this means is that our 50 Cell Bicycle Battery will give you about 25 miles (40 kilometers) of real world range. Real world means with some cargo and some hills. Don’t fall for other e-bikes that claim to get more range with less battery.

Lifetime Rebuild Warranty

A unique feature of our battery is that the cells are not welded, but held in place with pressure between copper contacts.  This allows us to repair and rebuild your battery pack when needed. We offer a Lifetime Rebuild Warranty with every bicycle battery pack. For half the cost of a new pack, we will completely refurbish your old battery pack and upgrade it with new cells. This almost always means more capacity because higher capacity cells are made every year.

Rugged and Rebuildable

The basic architecture was developed for cars and is made to withstand crash testing. The case is made from 3mm thick aluminum plate and 10mm thick fire retardant plastic.  Unlike most ebike batteries, it’s also fully water sealed.

Genuine Samsung Cells For Safety

The cells are the very latest high capacity cells from Samsung.  Featuring a new cell for 2013/2014, they have an incredible 2.9ah capacity, low resistance and exceed all safety standards by a large margin.  In fact, you can crush, short or puncture these cells without causing smoke or flame.
Read about our battery technology


  • Type: Lithium Ion
  • Cells: Genuine Samsung 18650 2.9ah
  • Capacity: 517wh 14.3ah
  • Voltage: 36v nominal 41.5v peak
  • Configuartion; 10 in series, 5 in parallel (10sx5p)
  • Life Cycles: 500-1000
  • Dimensions: 9.8×4.4×3.0″ (249x112x76mm)
  • Weight: 8 pounds (3.6kg)
  • Power: 4A at 36v
  • Charge Time: 4 hours
  • Input Voltage: AC 100~240v 50/60hz
  • Efficiency: >80%
  • Output Voltage: 41.5v
  • Precharger Function: Yes
  • Precharge Current: 0.6A 20-30v
  • Operating Temperature: 0-40 degrees celsius
  • Dimensions: 7.2×3.9×2.3″ (183x100x58mm)
  • Weight: 0.81kg

Can the battery be purchased separately?
Yes, you can now pre-order standard packs that come with our Lifetime Rebuild Warranty.  Only standard packs are available.

Can our company use the NTS battery in our products?
Yes, we work with OEMs to integrate our battery design into other products ranging from bicycles to automobiles.  Most of the time this requires custom design work to make a battery that exactly fits the requirements.

How does the lifetime service warranty work?
At any time the original purchaser can send in the battery and we will completely refurbish it for half of the replacement cost.  This may include new cells, case parts, graphics, etc.  It does not cover misuse or abuse, but it will cover the three most common situations: heavy daily use, accidents and neglectful charging.

What is neglectful charging?
Neglectful charging is when a battery is run down until it is almost empty and then put in storage for months. This happens to people who use the bike in the fall and store it for the winter. Once a battery is discharged, it needs to be charged again within 2 months or it can become damaged. Charge batteries before storing them. A fully charged battery will last in storage for over 2 years.

How do you store a NTS battery?
Be sure to fully charge your battery and make sure it is unplugged.  Store batteries where temperatures will not get below freezing.  Lithium ion batteries like most batteries have some self discharge and will become damaged if the cells fall below 1.0 volts each.  For an NTS 36v battery pack, this minimum is 10 volts.  Charge the pack once every three months to be on the safe side.