XL Batteries
PrivateLast Round
Seed Round
Jul 14, 2026
Total Funding Raised
$25.6M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
XL Batteries is a cleantech company that develops and provides a low-cost, grid-scale Organic Flow Battery for utility-scale energy storage.
Sector
Energy & Sustainability
Verticals
Energy Storage, Renewable Energy, Smart Grid
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
XL Batteries Comparables
Compare XL Batteries with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Quino Energy | 89% | |
| Otoro Energy | 88% | |
| Flux XII | 87% | |
XL Batteries Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Seed Round | Jul 14, 2026 | ||||
| Seed | Sep 17, 2025 | ||||
| Seed | Feb 23, 2023 | ||||
| Grant | Sep 1, 2022 | ||||
| Grant | Aug 1, 2022 | ||||
Accelerator | Sep 17, 2021 |
Key People
Founding team and executive leadership
XL Batteries Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Catalus Capital | Seed |
| Xerox Ventures | Seed |
| Myriad Venture Partners | Seed |
| SIP Global Partners | Seed |
| National Science Foundation | Grant |
| Third Derivative | Accelerator |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 14, 2026
$13M round raised
- Apr 20, 2026
Received the 2026 BloombergNEF Pioneers award.
XL Batteries Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about XL Batteries's valuation, stock price, and market status.