Company lists · Data refreshed September 2026

Top 25 Battery pack assemblers based in the United States

RevenueBase identified 166 company matches for battery pack assemblers associated with the United States as of September 2026 and tracks 7,136 professional contacts across them, including 1,551 with verified work emails. San Diego is the largest hub.

This list covers company matches for battery pack assemblers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
166Companies
7,136Contacts tracked
1,551Verified emails
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The 25 largest battery pack assemblers based in the United States

Ranked by team size
Top 25 of 166 company matches for battery pack assemblers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWoodridge, IL, United StatesHQ recorded Sep 19, 20261,001-5,0001,198 contacts →

Exact match

“Inventus Power is the leading provider of advanced battery and power systems for global OEMs.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchWarren, OH, United StatesHQ recorded Sep 19, 20261,001-5,000847 contacts →

Exact match

“Electricity is the future of transportation, powered by battery cells that are designed and manufactured by some of the brightest, most innovative people in the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchChicago, United StatesHQ recorded Sep 19, 2026n/a578 contacts →

Exact match

“National Power Corporation is a leading custom battery pack assembler servicing the needs of a Global OEM market.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchNovi, MI, United StatesHQ recorded Sep 19, 20261,001-5,000530 contacts →

Exact match

“A123 Systems, LLC develops and manufactures advanced Nanophosphate® lithium iron phosphate batteries and energy storage systems that deliver high power, maximize usable energy…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchRichmond, CA, United StatesHQ recorded Sep 19, 20261,001-5,000335 contacts →

Exact match

“Octillion is a California-based Tier 1 supplier of innovative high-density battery systems and related technology focused on the electrification of major industries such as…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchStafford, TX, United StatesHQ recorded Sep 19, 20261,001-5,000139 contacts →

Exact match

“Founded in Stafford, Texas in 2006 as a research and technology driven company, Microvast Holdings, Inc.(Nasdaq: MVST) has evolved into a global leader in the design, development…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202651-200131 contacts →

Exact match

“Since 1996, iTECH is a designer, engineer, and manufacturer of batteries, chargers, and docking stations.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchNew Bedford, MA, United StatesHQ recorded Sep 19, 202651-200115 contacts →

Exact match

“Epec Engineered Technologies is the ideal choice for an OEM seeking customized product solutions from a focused and agile partner having supported over customers across all…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchByhalia, MS, United StatesHQ recorded Sep 19, 202651-20098 contacts →

Exact match

“Amplify Cell Technologies is the first advanced commercial battery cell manufacturing plant for heavy-duty and medium-duty vehicles in the United States.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchReno, NV, United StatesHQ recorded Sep 19, 202651-20082 contacts →

Exact match

“Dragonfly Energy is a comprehensive lithium battery technology company, specializing in cell manufacturing, battery pack assembly, and full system integration.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchVista, CA, United StatesHQ recorded Sep 19, 202651-20082 contacts →

Exact match

“Flux Power designs and builds intelligent lithium-ion battery solutions and cloud-based energy management software for industrial fleets.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchHenderson, NV, United StatesHQ recorded Sep 19, 2026201-50079 contacts →

Exact match

“Lithion is a vertically integrated manufacturer of cells, rechargeable and non-rechargeable battery packs and modules serving industrial, medical, robotic, military / defense and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchCarlisle, PA, United StatesHQ recorded Sep 19, 202651-20077 contacts →

Exact match

“For 55-years, Flight Systems Industrial Products (FSIP) has provided reliable, high quality products and services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202651-20077 contacts →

Exact match

“At Tecate Group, we pride ourselves on simplifying complex energy-storage requirements by combining our technical knowledge and design flexibility to deliver high-quality…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchFountain Valley, CA, United StatesHQ recorded Sep 19, 202651-20075 contacts →

Exact match

“Custom Power is a global supplier of premium COTS and custom-built battery packs for use in some of the harshest and most demanding environments.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchLowell, MA, United StatesHQ recorded Sep 19, 2026201-50067 contacts →

Exact match

“Aved Electronics | Custom Power & Interconnect Solutions – Fully Turnkey Aved Electronics is a U.S-based manufacturer specializing in custom battery packs, cable assemblies, and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchHenderson, NV, United StatesHQ recorded Sep 19, 2026201-50064 contacts →

Exact match

“Valence’s safe, scalable, lithium modules are now produced solely by Lithion Battery as part of their growing portfolio of lithium solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchMesa, AZ, United StatesHQ recorded Sep 19, 202651-20055 contacts →

Exact match

“Nxu, Inc, formerly known as Atlis Motor Vehicles, is a US-owned technology company manufacturing innovative battery cells and battery packs, for use in advanced energy storage…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchHayward, CA, United StatesHQ recorded Sep 19, 202651-20050 contacts →

Exact match

“Since 2015, Lithos has established itself as the global leader in high performance lithium-ion battery systems engineered for demanding environments.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchIndianapolis, IN, United StatesHQ recorded Sep 19, 202611-5046 contacts →

Exact match

“At EnPower, we are driven to solve today's energy challenges by building better batteries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchNewberry, FL, United StatesHQ recorded Sep 19, 202651-20045 contacts →

Exact match

“Inspired Energy is a privately-owned business located in the town of Newberry just west of Gainesville Florida, USA.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchFremont, CA, United StatesHQ recorded Sep 19, 202651-20045 contacts →

Exact match

“Tenergy Corporation is a total mobile power solution provider.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchMissouri City, TX, United StatesHQ recorded Sep 19, 202651-20043 contacts →

Exact match

“In 2019, Southwest Electronic Energy was acquired by Ultralife Corporation.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchOklahoma City, OK, United StatesHQ recorded Sep 19, 202651-20038 contacts →

Exact match

“Spiers New Technologies Inc (SNT) is the leading full service provider for advanced battery packs use in hybrid and electric vehicles.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchScottsdale, AZ, United StatesHQ recorded Sep 19, 2026201-50038 contacts →

Exact match

“Fluidic Energy is unique in many ways and arguably the most advanced new energy storage company in the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 166 battery pack assemblers based in the United States

See the full list, filter by size, metro and specialty, and access 1,551 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Battery pack assemblers based in the United States at a glance

As of Sep 19, 2026
21.7%Verified-email coverage
43.0Average contacts per company
11-50Median size (employees)
3.0%Largest-city concentration · San Diego
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
53
51-200
38
201-500
11
501-1,000
5
1,001-5,000
9
5,001-10,000
4

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 166 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “battery pack assemblers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,551 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “battery pack assemblers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many battery pack assemblers are there based in the United States?

RevenueBase identified 166 company matches for battery pack assemblers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Inventus Power tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most battery pack assemblers?

San Diego leads with 5 company records, followed by San Jose (4) and Fremont (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,551 professional contacts with verified work emails tracked across these 166 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.