Spear is an ISO9001 and AS9100 certified business with ITAR compliant facilities. We design and manufacture lithium-ion battery systems that offer exceptional performance and safety features across a wide variety of applications.

Our state-of-the-art energy storage products are reliable and built to withstand the toughest environments for some of the most demanding functions. Our talented engineering team has experience designing to meet the requirements of the most difficult standards, such as NAVSEA S9310, MIL-STD-461, MIL-STD-810, UN38.3, DO-160, DO-254, DO-178, and DO-311.




Spear logo with spear text

Spear was formed in 2013 as a spin-off of Dow Kokam’s defense and industrial operations.


circuit board

Introduced Spear's G1 chemistry agnostic, scalable BMS (sBMS).


certificate from NQA

Spear receives ISO9001 and AS9100 certification.


trident logo

Introduced Trident brand high-voltage, scalable COTS battery system for propulsion power.


battery pack blue

Delivered Spear’s first airborne, ultra high-power, directed energy battery to a major defense prime.


batteries burned over time

Trident achieves NMA Level 1 thermal runaway propagation safety.



Achieved approved supplier status for multiple large European marine integrators.


sunrise over earth

Released radiation tolerant BMS intended for LEO applications.


Secured long-term supply agreement with Blue Origin for the New Glenn dual-use battery.


sensata logo

Acquired by Sensata Technologies.


military solute

Spear exits commercial marine business to focus on Aerospace & Defense.


manta ray

Delivered three different systems to power propulsion and energy harvesting for DARPA Manta Ray UUV program.


water tide

Delivered Spear’s first immersion-cooled battery for ultra high-power applications.


certificate of official partner spear power systems and sensata technologies

LG names Spear an official battery pack manufacturer.

Q3 2024

tech code

Spear's aerospace BMS expected to achieve DO-178C DAL B certification.

Q2 2025

Silver pack battery

Launch of Spear’s COTS system mid-life upgrade.

Frequently Asked Questions

How does Spear’s Scalable Battery Management System Work?

Spear’s veteran team of hardware and software engineers has developed battery management electronics for portable electronics, unmanned vehicles, advanced weapons, aircraft, and large-scale stationary storage. Spear’s next-generation SBMS builds upon the lessons learned from both this breadth of experience and working with leading industry technology partners. The modular architecture allows for the same circuit and software blocks to be used for 12V to 1250V applications, as well as for deployments of individual modules versus dozens of parallel strings.

The SBMS works with all lithium-ion cell chemistries, giving customers a dependable, common communications interface across different applications thereby compressing development and commissioning times. The state-of-the-art SBMS electronics gather the temperature and voltage measurements of each cell more quickly and precisely than other solutions, providing enhanced safety and more accurate prediction of the battery’s state of charge (SOC) and state of health (SOH)

What is the Scalability of Spear Power’s Modules?

Spear is an expert in the robust, safe integration of lithium-ion cells into high capacity, high voltage strings. Spear’s SMOD provides modular building blocks for the mechanical integration of prismatic pouch or cylindrical can cells into energy storage systems from 12 to 1250 VDC and from 1s to 1000s of Ah.

The SMOD’s proprietary thermal management design maximizes both cell life and operational range. The SMOD is a key contributor to the ESS safety architectures, by assisting in the detection and mitigation of faults. The SMOD offers an industry-leading blend of thermal performance within a lightweight, compact volume.

Are the Energy Storage System Integration options robust?

Today’s energy storage systems are complex and require a mastery of multiple engineering and scientific disciplines, which is why Spear’s technical team is made up of a combination of electrical engineers, software engineers, mechanical engineers, manufacturing engineers, scientists, and program managers. Whether installing a typical deployment of our Trident battery system or a new custom ESS, our applications engineers engage directly with our customers’ technical teams at the beginning of every project to fully define the ESS requirements and power system interfaces.

Our SBMS and SMOD building blocks enable us to develop proof of concept units rapidly, cutting your time to market. We work together to design within the safety and de-risk key performance criteria. When it comes time to flip the switch, Spear will be there alongside you with test results and diagnostic tools to make certain everything works according to plan - and Spear will continue to be there, with timely support and friendly service, whenever the need arises.

Get Energized with Spear