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01 · Free data roomBuild, share and track important documents.

Data room analytics Document Analytics Pitch Deck Tracking Secure sharing Permissions NDA & agreements Watermarking Versions Branding

View all Data Room features →

02 · AI Fundraising CRMRun the work between investor meetings.

Today & next moves Follow-up Investor research Investor CRM Investor updates Imports & sources

View all Operator features →

See it workingOpen a live roomWalk a real RoundOS room.

Pricing Security

Deal rooms

Startups Venture capital M&A data room Investor relations

Beyond fundraising

Sales deals Board documents Due diligence Real estate

Fundraising

Fundraising hub Pre-seed Seed Series A

Learn

Blog Funding News Customer stories Investor room template

Compare

All alternatives Best free data rooms Best DocSend alternatives Digify alternative iDeals alternative

Free tools & templates

Calculators and fundraising tools. No signup.

SAFE, dilution, runway, pipeline coverage, investor fit.

Sign inExploreData Room AI Fundraising CRM Pricing Security Document Analytics Pitch Deck TrackingData Room featuresData room analytics Secure sharing Permissions NDA & agreements Watermarking Versions BrandingUse casesFundraising hub Startups Venture capital M&A data room Investor relations Sales deals Board documents Due diligence Real estate Pre-seed Seed Series AOperatorToday & next moves Follow-up Investor research Investor CRM Investor updates Imports & sourcesMoreCustomer stories All alternatives Best free data rooms Investor room template Free tools Blog Funding News Integrations

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Funding/Investors/Engine Ventures

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EV

Engine Ventures

Activity from announced rounds

Activity in this selection View all activity

All recorded activity

Rounds participated in: 2
Confirmed lead rounds: 1
New companies: 2
Funding in participating rounds: $760.6M

By stage

Series C+1

Undisclosed1

By primary sector

Climate tech1

Hardware1

By country

1

United States1

Rounds

2 in all activity

Sep 17

CorePower Magnetics

CorePower manufactures high-performance inductors, transformers and motors from proprietary magnetic materials for power-electronics applications.

$10.6MFinancing

Lead

Aug 12

Long-duration iron-air batteries designed to store electricity for multi-day grid needs.

$750MSeries G

Participant

1–2 of 2

Most frequent co-investors

Baruch Future Ventures1 shared Blindspot Ventures1 shared Breakthrough Energy Ventures1 shared Carnegie Mellon Catalyst Fund1 shared Coatue1 shared Energy Impact Partners1 shared Evergreen Climate Innovations1 shared Franklin Venture Partners1 shared Gigascale Capital1 shared Janus Henderson Investors1 shared

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RoundOS

A free data room for modern deals, with an AI operator that runs the fundraise.

Create a free room

01 · Explore

Data Room AI Fundraising CRM Pricing Security Document Analytics Pitch Deck Tracking

02 · Data Room

Data room analytics Secure document sharing Data room permissions NDA & agreements Dynamic watermarking Document versions Custom branding

03 · Operator

Fundraising hub Pre-seed fundraising Seed fundraising Series A fundraising Fundraising follow-up Investor research Investor updates Integrations

04 · Use cases

Startup data room VC and LP data room M&A data room Due diligence data room Investor relations Sales data room Board documents Real estate data room

05 · Free tools

All free tools SAFE calculator Dilution calculator Runway calculator Pipeline coverage Investor fit checker Follow-up generator Round leak audit

06 · Resources

All alternatives DocSend alternative Digify alternative Google Drive alternative Dropbox alternative Best DocSend alternatives Best free data rooms Investor room template Blog Customer stories Funding News Open a live room

© 2026 RoundOS · Data Room free forever · Operator from $99/month