Proper Voltage

Proper Voltage

Develops rapid-charge Lithium Titanate batteries

Overview

ZapBatt makes Lithium Titanate battery systems for fast charging, long lifespan, and high safety, selling battery packs in various sizes and offering custom solutions. The batteries use Lithium Titanate chemistry to charge in under 20 minutes and endure up to 15,000 cycles, while a Battery AI analyzes 26 performance factors to continuously optimize output. It stands out by pairing ultra-fast charging and very long cycle life with an AI-driven optimization layer and the ability to tailor packs for different industries. Its goal is to provide reliable, efficient energy storage across industries, lowering total cost of ownership and promoting sustainable energy use through scalable, customized battery systems.

About Proper Voltage

Simplify's Rating
Why Proper Voltage is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Hardware

Energy

AI & Machine Learning

Company Size

11-50

Company Stage

Seed

Total Funding

$7.2M

Headquarters

Oceanside, California

Founded

2019

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Simplify's Take

What believers are saying

  • Proper Voltage raised new capital in May 2026, extending runway into commercialization.
  • The website updated July 31, 2026, signaling active product and messaging development.
  • Hiring signals from July 2026 suggest expansion across engineering, sales, and deployment teams.

What critics are saying

  • May 2026 funding was only $6.5 million, limiting manufacturing and sales scale.
  • Incumbents like Tesla, Enphase, and battery OEMs can bundle integrated power electronics.
  • If certification slips in UPS or defense, revenue stalls and the platform story fails.

What makes Proper Voltage unique

  • Proper Voltage sells a battery operating system, not just cells, reducing redesign costs.
  • Its bOS works across lithium titanate, sodium-ion, and other chemistries.
  • Carlsbad-based founders Charlie Welch and David Felzer target critical power, robotics, and defense.

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Funding

Total Funding

$7.2M

Above

Industry Average

Funded Over

2 Rounds

Seed funding is usually the first official round after pre-seed, when a startup has a prototype or concept. It’s typically used to develop the product, test the market, and start building the team. Investors here are often angel investors or early-stage venture capitalists.
Seed Funding Comparison
Meet Average

Industry standards

$3.3M
$2M
Netflix
$2.3M
Instacart
$3M
Robinhood
$3.6M
Proper Voltage

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Paid Holidays

Hybrid Work Options

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

-26%

1 year growth

10%

2 year growth

0%
Yahoo Finance
Mar 19th, 2024
ZAPBATT Unleashes Toshiba's Lithium Titanium Oxide (SCiB(TM) Technology with Revolutionary Battery Operating System-Now Available

In a strategic collaboration with Toshiba, ZAPBATT launches its revolutionary Battery Operating System (bOS), initially focusing on Toshiba's Battery SCiB(TM) Lithium Titanium Oxide (LTO) chemistry for integration across a variety of applications.

Intelligence360 News
Apr 3rd, 2023
ZapBatt has filed a notice of an exempt offering of securities to raise $7,162,000.00 in New Equity and Debt Financing.

According to filings with the U.S. Securities and Exchange Commission, ZapBatt is raising $7,162,000.00 in new funding. Sources indicate that as part of senior management Chief Technology Officer, David Felzer played a key role in

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