Mana Battery
Mana Battery develops anode-free sodium-ion cells and proprietary electrolytes for battery manufacturers.
UndisclosedSeed financing (investment amount undisclosed)
ParticipantBG
Buff Gold Ventures
Activity from announced rounds
Activity in this selectionOct 19, 2026 · Sep 20, 2026
Buff Gold Ventures is a venture investor identified by Polaris Electro-Optics and in Think Bioscience’s investment history.
Recorded funding activity
Polaris develops lower-power optical interconnects for AI and data-center systems. Think Bioscience works on small-molecule medicines for challenging drug targets. Polaris’ issuer announcement identifies Buff Gold as an existing investor, establishing continuity rather than a separate new investor identity.
- Rounds participated in
- 1
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 1 First participation on record · 0 follow-on
- Funding in participating rounds
- — 0 disclosed · full round size, not this investor’s share