Iontra Funding, Investors & Competitors

Iontra has raised $125M across 4 funding rounds, most recently a $45M Series C in November 2024.

Last Iontra funding round

$45M

Series C · Nov 2024

Cumulative funding Iontra raised

$125M

across 4 funding rounds

Key investors in Iontra

  • Volta Energy Technologies
  • Riverstone
  • Flag Asset Management

Iontra Overview

About Iontra

Iontra is a battery technology company developing charge control solutions compatible with all commercial lithium-ion batteries. Its platform delivers extended cycle life, accelerated charging speeds, and superior safety features for applications in electric vehicles and consumer electronics. Headquartered in the United States, Iontra supports original equipment manufacturers in meeting electrification demands across automotive and energy storage sectors.


Founded

2013

HQ

United StatesDenver, CO

Website

iontra.com

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Iontra Funding History

Iontra has raised a total of $125M across 4 funding rounds.

Iontra's first fundraising round was a $13M Series A in November 2020. The most recent completed round was a $45M Series C in November 2024.

Iontra funding rounds

Iontra funding rounds
DateStageInvestorsRaisedDeal Summary
Nov 2024Series CVolta Energy Technologies (lead)$45MIontra Inc., based in Centennial, Colorado, develops next-generation battery charging technology, including semiconductor and software solutions for battery charger microcontrollers (MCUs) that enhance charge speed, cycle life, capacity utilization, safety, and performance for lithium batteries in electric vehicles, residential energy storage, and other applications. The technology is chemistry-agnostic, supports cold weather charging to -20°C, and addresses issues like plating and dendrite formation without altering battery cell design or chemistry. Customers are expected to launch Iontra-enabled products soon, with MCU samples available in 2025. On November 20-21, 2024, Iontra closed a $45 million Series C funding round led by repeat investor Volta Energy Technologies, with participation from current and new undisclosed investors. This round brings the company's total funding to $120.3 million across multiple rounds. The proceeds will support aggressive growth, production scaling, and customer product launches. Additionally, in November 2024, Iontra received a $2.15 million grant from the U.S. Department of Energy's ARPA-E CIRCULAR program to develop technologies supporting a circular domestic supply chain for EV batteries. Volta Energy Technologies, a U.S.-based venture fund focused on energy transition technologies like energy storage, highlighted Iontra's potential to optimize existing battery performance and sustainability across markets.
Jul 2023Series BRiverstone (lead); Volta Energy Technologies (lead); Flag Asset Management$29MIontra Inc is a Colorado-based company innovating in next-generation battery charging technology. The company announced an additional $29 million investment to accelerate the launch of its next-generation battery charger MCU.
Sep 2022Series BVolta Energy Technologies (lead)$38MIontra Inc., a Denver-based battery performance and safety technology company, closed a $38M Series B funding round on September 13, 2022, led by Volta Energy Technologies with participation from Flag Group and other investors. The funding supports further development and commercialization of Iontra's Charge Control technology, which replaces traditional CC/CV charging to increase charge speeds and battery lifetimes by over 2X for existing battery products. After nearly a decade in stealth mode, Iontra partners with top-tier OEMs to reduce development time for new batteries and battery-powered products. Iontra plans to initially commercialize its Power Control Technology for power tools, smartphones, and drones, with rapid expansion to larger-scale applications like EVs, DC fast chargers, grid storage, and industrial uses. Volta Energy Technologies, a strategic investor in battery and energy technologies, connects innovators with industry players to support the energy transition toward electrification and decarbonization. Volta's CTO Dave Schroeder joined Iontra's board, highlighting the technology's potential to improve battery design, cost, and value across various products. Iontra CEO Jeff Granato emphasized Volta's role in accelerating commercialization, while Volta's Chief Investment Officer Zander Arkin noted how Iontra's advanced software and power controls enhance their portfolio for product development partnerships. Subsequent rounds include a $29M Series B extension in July 2023 from Flag Asset Management, Riverstone Group, and Volta, and a $45M Series C in November 2024 led by Volta, bringing total funding to $120.3M.
Nov 2020Series A-$13MIontra is a battery innovation company developing technology to improve charge speed, cycle life, capacity utilization, cold weather charging, and safety of lithium batteries. In November 2020, Iontra raised $7.5M in a funding round. The company, based in Centennial, CO, has continued to secure funding in subsequent rounds, including a Series B of $29M in July 2023 led by Flag Asset Management, Riverstone Group, and Volta Energy Technologies, and a Series C of $45M on November 20-21, 2024 led by Volta Energy Technologies.

Who has invested in Iontra?

3 investors have backed Iontra across its funding rounds, including Volta Energy Technologies, Riverstone and Flag Asset Management.

Lead investors include Volta Energy Technologies and Riverstone.


Iontra Investors

Investors in Iontra by funding rounds participated
InvestorHQRoundsRoleFirst check
Volta Energy TechnologiesUnited StatesChicago, IL3LeadSep 2022

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Iontra Competitors

Iontra competitors include listed companies like Tesla, ABB, Johnson Controls and Honeywell, and private ones like Hadrian and Xiaoyu Zhizao.

Public and private companies comparable to Iontra
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
TeslaUnited StatesUnited StatesPublicly listed$95B$10B$1.4T13.8x
ABBSwitzerlandSwitzerlandPublicly listed$33B$6.9B$175B4.9x
Johnson ControlsUnited StatesUnited StatesPublicly listed$24B$3B$85B3.7x
HoneywellUnited StatesUnited StatesPublicly listed$37B$7.8B$65B3.6x
HadrianUnited StatesNew York City, NYPrivate--$7.9B-
Xiaoyu ZhizaoChinaBeijingPrivate--$5.8B-

Iontra Public Comps

Iontra is still privately-owned, but its public comps include Tesla, Siemens, CATL, Schneider Electric, ABB, Hitachi, Mitsubishi, Delta Electronics (Thailand), Johnson Controls and Emerson Electric.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Tesla$95B$10B15.0x13.8x140.8x97.4x
Siemens$91B$15B3.0x2.9x18.1x15.7x
CATL$63B$16B2.8x2.1x11.0x9.2x
Schneider Electric$46B$9.5B4.3x3.9x21.0x18.4x
ABB$33B$6.9B5.4x4.9x25.9x22.6x
Hitachi$68B$11B2.2x2.2x13.8x13.5x
Mitsubishi$122B$8.7B1.2x1.2x17.2x21.8x
Delta Electronics (Thailand)$5.9B$1.1B15.0x11.4x80.8x64.9x

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Common questions about Iontra

When was Iontra founded?Iontra was founded in 2013.
Where is Iontra headquartered?Iontra is headquartered in Denver, CO, United States.
Is Iontra publicly listed?No, Iontra is a private, VC-backed company.
How much funding has Iontra raised?Iontra has raised $125M across 4 funding rounds.
What was Iontra's last funding round?Iontra's last funding round was a $45M Series C in November 2024, led by Volta Energy Technologies.
Who are Iontra's investors?Iontra's investors include Volta Energy Technologies, Riverstone and Flag Asset Management.
Which companies are comparable to Iontra?Companies comparable to Iontra include Tesla, ABB, Johnson Controls, Honeywell, Hadrian and Xiaoyu Zhizao.

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