What Coulomb Solutions does

Coulomb Solutions Inc. (CSI) is a Livermore, California-based provider of LFP battery systems and electrification components for the North American commercial electric vehicle market. Founded in 2019 by CEO Dave Mazaika and President Battery Systems Lining Zhou (a former CATL executive), CSI operates as the exclusive North American channel partner for CATL, sourcing BC3 high-energy density (22-70 kWh) and BC5 long-life (38-100+ kWh) battery packs proven in over 1 million commercial vehicles covering 57+ billion miles. The product portfolio includes a comprehensive plug-and-play accessory suite — 1000V PDU+, Battery Thermal Management Systems, on-board chargers (6-40 kW), DC-DC converters, electric air compressors, steering pumps, AC compressors, water heaters/pumps, and axial flux permanent magnet motors — unified by CSI's proprietary SmartEV CAN-based software platform that uses AI-assisted learning algorithms to eliminate custom integration and reduce OEM development timelines by 6-12 months.

CSI has expanded into mobile Battery Energy Storage Systems (BESS) ranging from 233 kWh to 2.64 MWh, targeting data centers, industrial facilities, utilities, and EV charging infrastructure with customers like Critical Loop receiving the 2.33 MWh Green Energy ToGo system. Revenue is generated through three motions: (1) direct enterprise sales to commercial vehicle OEMs (Peterbilt, Oshkash, Daimler, Blue Bird, Xos, Phoenix Motorcars, Hyliion, Motiv, BAE Systems) via quote-based multi-year contracts with pricing gated behind login, (2) national field sales for mobile BESS with transactions ranging $500K-$20M, and (3) e-commerce retail for low-voltage batteries ($294-$1,350 per unit). The company maintains UL1973, UL9540A, UL508, NFPA855, and UN certifications, and is privately held and bootstrapped with no institutional funding rounds documented.

CSI was recognized as Innovators of the Year by Fleet Vision International in April 2026 for its mobile BESS technology, and appointed senior clean transportation leaders John Boesel (former CALSTART CEO) and Michael Britt (former UPS fleet electrification leader) to its advisory board in 2026. The company settled a $4.3 million litigation with Workhorse Group in 2026.

Name

Coulomb Solutions

Legal name

Coulomb Solutions Inc.

Website

https://coulombsolutions.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Coulomb Solutions is a Livermore, California-based provider of CATL-sourced LFP battery systems and plug-and-play EV electrification components for North American commercial vehicle OEMs and mobile battery energy storage customers, serving fleet operators and industrial buyers.

Ownership category

akta.pro rank

Product category

Commercial Electric Vehicle Battery Systems

NAICS

Battery Manufacturing (33591), Electrical Equipment Manufacturing (33531), Electrical Equipment Manufacturing (3353)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Motors & Generators (3621), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

Automotive Charging Hardware Manufacturing (On-board Chargers, Charge Inlets, DC-DC) (IMACAJAK)

akta.pro secondary industries

Power Electronics Manufacturing (Inverters/DC-DC/Onboard Chargers) (IMACACAD), Truck & Commercial Vehicle Electrification Manufacturing (eAxles/Battery Packs/Fuel Cells) (IMACABAK), Charging Infrastructure Components (connectors, cables, dispensers, payment/controls) (IMAGAHAH)

Keywords

• Commercial EV batteries
• Battery energy storage
• Electric vehicle components
• LFP battery systems
• Mobile power solutions

Headquarters

HQ city

Livermore

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Commercial Battery Systems: Sale of CATL-sourced LFP battery packs (BC3, BC5 series) and battery systems for commercial electric vehicles including trucks, buses, and specialty vehicles. Revenue from direct OEM sales and aftermarket battery replacements.
2. EV Components and Accessories: Complete suite of plug-and-play smart accessories including PDU+, BTMS, on-board chargers (6kW-40kW), DC-DC converters, electric steering pumps, air compressors, AC compressors, water heaters, and water pumps for commercial EV platforms.
3. Mobile BESS Products: Transportable battery energy storage systems (466 kWh to 2.33 MWh) for EV charging infrastructure, data centers, industrial facilities, and grid support applications. Revenue from direct sales and potentially rental/leasing programs.
4. Low Voltage Retail Batteries: Consumer/commercial batteries including 12V sodium-ion, 12V lithium-ion, and 48V golf cart batteries sold through e-commerce and potentially retail channels.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

Coulomb Solutions Inc. (CSI) supplies CATL-sourced LFP battery packs (BC3 and BC5 series), a complete plug-and-play suite of EV electrification components (PDU+, BTMS, on-board chargers, DC-DC converters, electric air compressors, steering pumps, AC compressors, water heaters and pumps), axial flux permanent magnet motors, and transportable Battery Energy Storage Systems (BESS) for the North American commercial vehicle market. All products are integrated through CSI's proprietary SmartEV CAN-based software platform that enables OEMs to electrify trucks, buses, and specialty vehicles without custom integration or central vehicle controllers.

Product overview

Coulomb Solutions Inc. (CSI) is a provider of commercial EV battery systems and electrification components for the North American market. The product portfolio centers on CATL-sourced LFP battery packs (BC3 high-energy density and BC5 long-life series ranging 22-100+ kWh), paired with a complete suite of Plug & Play smart accessories including Power Distribution Units (PDU+, eAAM-01 Advanced Accessory Module), Battery Thermal Management Systems (8-24 kW BTMS), on-board chargers (6-40 kW), DC-DC converters (2.5-6 kW), electric steering/braking components (air compressors, steering pumps, AC compressors, water heaters/pumps), and axial flux permanent magnet motors. The company also manufactures mobile Battery Energy Storage Systems (BESS) from 233 kWh to 2.64 MWh for EV charging infrastructure, data centers, and grid support applications. Retail products include 12V sodium-ion and lithium-ion starter batteries and 48V golf cart batteries with smartphone APP monitoring. All products feature CSI's proprietary SmartEV CAN-based software platform enabling plug-and-play integration without custom development.

Differentiator

Problem solved

Functional benefit

Products and services

• Mobile Battery Energy Storage Systems (BESS) Transportable BESS solutions ranging from 233 kWh to 2.64 MWh, featuring CATL-sourced LFP batteries, integrated inverters (up to 1 MW), solar integration, smart-grid connectivity, and modular configurations for rapid deployment in EV charging infrastructure, data centers, industrial facilities, logistics hubs, and grid-constrained locations. UL1973/UL9540A/NFPA855 compliant.
• BC5 Long-Life LFP Battery Packs Long-life LFP battery packs (38.6–100.2 kWh) for commercial electric vehicles, with up to 8,000 cycles, energy density of 161–168 Wh/kg, IP68 rating, water-glycol cooling and heating, and configurable systems from 100–600+ kWh. Validated in over 700,000 commercial EVs and HEVs.
• BC3 High Energy Density LFP Battery Packs High energy density LFP battery packs (22.3–70.5 kWh) optimized for commercial heavy-duty vehicles, with 150 Wh/kg energy density and proven deployment in over 350,000 commercial EVs. Designed for cost-efficient commercial vehicle electrification.
• Advanced Accessory Module (eAAM-01) Fully integrated commercial EV accessory module combining PDU+, BTMS, air compressor, steering pump, AC compressor, PTC heater, water pump, and 20 kW on-board charger functions into one plug-and-play unit to simplify OEM EV integration.
• 1000V Power Distribution Unit Plus (PDU+) 1000V-rated power distribution unit integrating DCDC converter, steering accessory drive, braking accessory drive, contactors, and precharge functions for commercial electric vehicles.
• Battery Thermal Management Systems (BTMS) Integrated thermal management systems providing 8–24 kW cooling and 18–24 kW heating, including condensers, compressors, heaters, and coolant pumps, designed for LFP battery packs in commercial EVs.
• On-Board Chargers High-voltage and medium-voltage on-board chargers (6–40 kW) supporting 85–265 VAC input, 470–850 VDC output, J1772 CAN protocol, and IP67 rating for commercial EVs.
• DC-DC Converters Medium and high voltage DC-DC converters (2.5–6.0 kW) for converting high-voltage traction packs to 12V or 24V low-voltage systems in commercial electric vehicles.
• Axial Flux Permanent Magnet Motors Next-generation axial flux permanent magnet motors offering higher power density, superior torque-to-weight ratio, and compact design for electric propulsion systems in commercial vehicles.
• Electric Air Compressors 3.7 kW high/medium voltage electric scroll air compressors with permanent magnet motors, oil-less operation, integral air coolers, and available 600V inverters for commercial EV braking systems.
• Electric Steering Pumps 2.4–4.0 kW electric steering pumps for 500–750 VDC commercial EVs with permanent magnet motors, built-in reservoirs, and optional 5.5 kW inverters.
• Air Conditioning Compressors 3 kW air conditioning compressors for 350V and 600V commercial EVs with permanent magnet motors, CAN/PWM control, scroll-type operation, and integral 600V inverters.
• Electric Water Heaters 5–12 kW electric water heaters for 350V and 600V commercial EVs with ceramic PTC heaters, CAN control, and built-in protection modes.
• Electric Water Pumps DC brushless motor water pumps (3 gpm/5 psi and 10 gpm/13 psi) with 0–5V control for commercial EV thermal management systems.
• Battery Pack Chargers Battery pack chargers (PACKCHG-003) with digital touch-screen, 208–240 VAC single-phase input, 50–400 VDC output, and state-of-charge equalization capability.
• Battery Chillers 5–7 kW battery chillers for thermal management of high-voltage battery systems in commercial electric vehicles.
• Super-Long-Life Series 48V 105Ah Lithium-Ion Battery for Golf Carts 48V 105Ah (5.4 kWh) lithium-ion golf cart battery with 8,000+ cycles, 10-year lifespan, IP65 rating, built-in 200A BMS, LCD monitor, and smartphone APP monitoring. Supports up to 50 miles range and ships with a 5-year warranty.
• 12V Group 31 Sodium-Ion Starter Battery 12V Group 31 sodium-ion starter battery with built-in jump start button, high cold-cranking amps, and drop-in replacement form factor for lead-acid, AGM, or lithium-ion batteries in commercial vehicles, generators, and data storage backup applications. Priced at $354 per unit.
• 12V Group H8 Lithium-Ion Starter Battery 12V Group H8 lithium-ion starter battery with 950 CCA, 170 min reserve capacity, 4,000 cycles at 80% depth of discharge, 10-year lifespan, IP65 rating, 3-year warranty, and 60% weight reduction versus lead-acid equivalents. Priced at $294 per unit.

Quantifiable outcome

• Reduces commercial EV operating cost from $1/mile (diesel) to $0.39/mile (electric)
• +4 more outcomes

Named customers11 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature7 records

Partnerships

Four partnerships are on record, tiered minor, flagship and core.

• InCharge EnergyminorChannel Partner/ Reseller/ Distributor · 14 May 2026Workhorse Group announced partnership with InCharge Energy for fleet customer support. This is Workhorse's partnership, not directly CSI's, but Workhorse is a customer of CSI battery systems.
• Critical LoopflagshipStrategic or Co-development Partner · 6 January 2026CSI supplied Critical Loop with 2.33 MWh 'Green Energy ToGo' Mobile BESS to address grid capacity bottlenecks. Critical Loop integrates CSI BESS into rapidly deployable microgrids with predictive software and smart switchgear. Partnership serves urgent customer needs for EV infrastructure, logistics hubs, and data centers.
• CATL (Contemporary Amperex Technology)coreStrategic or Co-development Partner · 1 January 2019Founding strategic partnership where CATL provides highly reliable LFP battery systems and CSI serves as exclusive North American solution provider. CATL executive Lining Zhou co-founded CSI to bring CATL's battery technology to US commercial EV market. CATL has 12+ years experience with 1.5 million commercial EVs in China. CSI develops North American variants of CATL products and provides integration support.
• Chinese Axial Motor PartnercoreTechnology or Integration · 1 January 2019Strategic partnership with leading Chinese company for axial flux motor R&D and manufacturing. CSI leverages robust supply chain and cost advantages from Chinese partner. CSI performs final assembly and distribution in its Livermore, CA facility. Partnership accelerates axial flux motor innovation and market presence.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Workhorse Group: Workhorse builds electric medium-duty delivery trucks and is both a CSI customer (with a recent $4.3M legal settlement) and a peer in commercial EV powertrain and battery system deployment.
• Xos Trucks: Xos manufactures Class 5-8 electric trucks and is both an OEM customer of CSI's battery systems and a peer in the North American commercial EV powertrain ecosystem.
• SEA Electric: SEA Electric develops proprietary power-system kits for electrifying commercial vehicles, comparable to CSI's SmartEV plug-and-play accessory and battery integration approach for commercial fleets.
• Blue Bird: Blue Bird is the leading North American electric school bus OEM and CSI battery customer; its in-house Type C and D electric bus program mirrors CSI's commercial vehicle electrification scope.
• Phoenix Motorcars: Phoenix Motorcars produces medium-duty electric trucks using CSI-supplied CATL batteries, overlapping with CSI in the Class 4-6 commercial EV truck value chain.
• Motiv Power Systems: Motiv builds medium-duty EV chassis and powertrains for trucks and buses—matching CSI's focus on electrifying commercial vehicle platforms through battery systems and component integration.
• GreenPower Motor Company: GreenPower designs, builds and distributes zero-emission commercial vehicles (buses, trucks, vans), directly comparable to CSI's OEM-targeted commercial vehicle electrification focus.
• Proterra: Proterra supplied battery packs and powertrains for North American commercial EVs (buses, trucks, industrial), making it the closest historical analog to CSI's CATL-sourced battery system business for commercial fleets.
• Lightning eMotors: Lightning eMotors designs and manufactures zero-emission powertrains and battery systems for commercial fleets, directly overlapping CSI's plug-and-play accessory and battery integration offering for commercial vehicle OEMs.

Broad incumbents

• Cummins: Cummins is a large established powertrain and BESS provider with commercial vehicle electrification and energy storage portfolios that overlap with CSI's components and mobile BESS businesses, but at vastly greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/watch?v=FICppD3ZWh0
• LinkedInlinkedin.com/company/coulomb-solutions-inc/posts

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Coulomb Solutions