Craige Bertero

Director at Proper Voltage.

Raised on Proper Voltage filings

$25M

of $28.5M offered across 2 Form D filings

Form D filings: 2
Teammates: 3
Last filing: May 27, 2026

Company

Energy · Carlsbad, CA

Battery control software for swapping in new chemistries

Battery control software for swapping in new chemistries

Investors: 42
Still open: $3.5M

Investors: 42
Sector: Energy
HQ: Carlsbad, CA

Proper Voltage filings

Proper Voltage Form D filings
Filed	Security	Sold of offered	Filing
May 27, 2026	Equity	$6.5M/ $10M	Form D
May 27, 2026	Security to be acquired	$18.5M/ $18.5M	Form D/A

EquityFiled May 27, 2026Form D
$6.5M/ $10M
Security to be acquiredFiled May 27, 2026Form D/A
$18.5M/ $18.5M

Works with

Also named on Proper Voltage filings

Charles WelchChief Executive Officer, Form D signerForm D signer Gregory SlawsonExecutive Officer David FelzerExecutive Officer, Director