Detailed Review of Battery Manufacturer Molicel (E-One Moli Energy Corp.)

29.12.2025

Molicel is a global brand specializing in the production of high-performance lithium-ion battery cells. History and development

Author:
BTRY.ENERGY

Detailed Review of Battery Manufacturer Molicel (E-One Moli Energy Corp.)

Company History and Development Stages

The history of the global brand “Molicel” began in 1977 in Canada. In the physics laboratory of the University of British Columbia (UBC), the company “Moli Energy” was founded. Its mission was to commercialize rechargeable lithium battery technology, and it became the first in the world to achieve this.

However, in 1989, due to safety concerns regarding its products, the company faced a serious crisis that led to a massive recall of batteries and subsequent financial difficulties.

The revival of the brand took place in 1998, when the assets of “Moli Energy” were acquired by a Taiwanese group, leading to the creation of “E-One Moli Energy Corp.” From that moment, the company became part of a large Taiwanese conglomerate, focusing its activities on the development and production of high-power energy cells.

Company Geography and Production Facilities

The headquarters of E-One Moli Energy Corp. is located in Taipei, Taiwan. The main production facilities are concentrated in factories in the cities of Tainan and Kaohsiung, Taiwan.

Despite Taiwanese management, the company maintains strong ties with Canada, where an important research and development (R&D) center operates in Maple Ridge, British Columbia. This center continues to work on innovations in chemical compositions and battery technologies.

Molicel Products

Molicel specializes in cylindrical lithium-ion cells in the popular 18650 and 21700 formats. Their products are known for low internal resistance, which allows the cells to heat up less and work more efficiently under high loads.

Main Battery Models:

In 18650 format:
- INR-18650-P26A / P28A: Classic models with 2600–2800 mAh, long considered the standard for powerful devices.
- INR-18650-P30B: A new 3000 mAh model, gradually becoming the main choice in this format thanks to improved discharge characteristics.
In 21700 format:
- INR-21700-P42A: Legendary 4200 mAh model that made the brand popular among drone manufacturers.
- INR-21700-P45B: Improved 4500 mAh version. It is important to note that as of 2025 this model is being phased out. Although it may still be available for sale, the company is shifting focus to the next generations.
- INR-21700-P50B: A 5000 mAh model offering a better balance between capacity and power.
- INR-21700-P60B: A new innovative model introduced in 2025. Currently, it is the most powerful model, with a capacity of 6000 mAh and capable of delivering incredible discharge currents (up to 100 Amps peak).

Use in the Context of the War in Ukraine

The full-scale war in Ukraine has expanded the use of FPV drones. They are used as strike drones to hit targets, as reconnaissance drones, and for various other tasks.

Every drone requires a stable power supply that can also withstand peak loads. Companies manufacturing battery packs for drones use different cells from various producers. However, almost every company works with Molicel batteries. Thanks to their ability to deliver huge currents without overheating, they have become one of the main choices for powering unmanned systems.

How We Use Molicel Cells

Our company BTRY.ENERGY actively integrates the latest Molicel developments into its products, constantly updating the assortment in line with the release of new models.

At present, we mainly use Molicel cells in the 21700 form factor. We can offer serial packs for FPV drones, copters, and other UAVs: batteries in 6s2p and 6s3p configurations for strike drones, and packs in 6s4p and 6s6p configurations for heavier copters and aircraft.