3.7V Cylindrical Lithium-ion Battery 21700 Battery Series

High Quality Cylindrical Lithium-ion Batteries, including 18650, 21700, and 26650 models In Stock

Whether you’re looking to buy 18650 batteries, 21700 batteries, or the 26650 batteries, we’ve got a wide range of products for you. Moreover, we also support the customization service, any capacity, and any size, and any shapes.

A large range of li polymer batteries with or without PCM, NTC, Wires, and Connectors in stock!

Battery List

Over 5000+ Models

  • Rich inventory in different size and capacity
  • one year of storage time and warranty
  • Excellent exceed cycle life:500 cycles≥ 80%

Great Full Service

  • 4-7days LT&Delivery&24hours Full Quotes
  • Customize service in any shape, capacity, and size
  • Accept small sample orders and bulk production

High Quality & Safety

  • Safe with Japan IC+MOS/ PCM/ NTC / Connector
  • All our li polymer battery has been fully rigorous test
  • Charge to 80% and 3.8~3.9V before shipping

3.7V Cylindrical Lithium-ion Battery 21700 Battery Series

Rechargeable lithium-ion batteries, such as Lithium-Ion Battery 18650(diameter 18mm, height 65mm), Lithium-Ion Battery 26650(diameter 26mm, height 65mm), Lithium-Ion Battery 21700(diameter 21mm, height 70mm).
Lithium-ion and lithium-polymer are getting more popular in modern consumer electronics. LiPol manufacturers offer both lithium-ion batteries and lithium-polymer batteries.

  • The compact shape of our li polymer battery fits your mechanical design perfectly
  • Reasonable tolerance includes swell space to ensure safe, durability of all li polymer battery
  • High-density capacity for our li polymer battery to run a longer time
  • Lower self-discharging and over-charge/over-discharge / over-current/ Short circuit protection
  • Enhanced safety with Japan IC & MOS protectors.
  • Rigorous testing and charging lithium polymer battery to 60% before shipping
  • Fast global shipping via UPS/DHL/Express
  • IEC 62133, UN38.3, CE, RoHS, REACH, MSDS, and so on

We have a huge range of Li Polymer Battery vary in thickness (from 0.4mm to 14.0mm).

Huge Energy Density, Flat Volts, Low Self Discharge. Each Li Polymer Battery is equipped with 50mm or 100mm wires.

With built-in protection circuit board for these batteries to prevent over-current, over-charge and discharge, short-circuit, and temperature control.

If you want to customize a special small lithium polymer battery, it’s also friendly for us.

We offer competitive prices whether it is a large or small sample order. When you order more, we will offer you a lot of discounts.

All of our Batteries with high quality and the best price, Get a Free quote or specification & datasheet now!

3.7V Cylindrical Lithium ion 21700 Battery List

Meet Your Different Needs by Assembling the Battery in Series and Parallel.

Part NumberVoltage(V)Capacity(mAh)Size(mm)
LP21700A3.7480070 x 21
LP21700B3.7450070 x 21
LP21700C3.7400070 x 21
LP21700A 2S7.4480075 x 42 x 21
LP21700B 2S7.4450075 x 42 x 21
LP21700C 2S7.4400075 x 42 x 21
LP21700A 2P3.7960075 x 42 x 21
LP21700B 2P3.7900075 x 42 x 21
LP21700C 2P3.7800075 x 42 x 21
LP21700A 3S11.1480075 x 64 x 21
LP21700B 3S11.1450075 x 64 x 21
LP21700C 3S11.1400075 x 64 x 21
LP21700A 3P3.71440075 x 64 x 21
LP21700B 3P3.71350075 x 64 x 21
LP21700C 3P3.71200075 x 64 x 21
Fill out my online form.