Contra Costa County, California — part of the San Francisco Bay Area, with a population of 1.2 million and a GDP exceeding $80 billion — is one of California’s most strategically located battery markets. The county spans from the wealthy suburbs of Walnut Creek and Concord to the industrial corridor along the San Francisco Bay.
Contra Costa County’s economy spans petrochemical refining (the county is home to one of America’s largest petrochemical refining complexes along the Bay Area refinery corridor), technology, healthcare, and residential communities. The Port of Richmond handles maritime cargo operations.
California’s aggressive clean energy mandates have driven significant solar-plus-storage investment throughout Contra Costa County. The county’s petrochemical sector requires extensive industrial UPS and backup power systems.
CHISEN — A Well-Known Battery Brand for Contra Costa County Importers
CHISEN Battery has served Contra Costa County distributors, petrochemical facilities, and solar installers for many years. Our industrial UPS batteries serve the county’s petrochemical facilities.
CHISEN batteries carry CE, ISO 9001, ISO 14001, and UN38.3 certifications. We ship via FCL ocean freight to the Port of Oakland, with direct transport to Contra Costa County. Transit time is approximately 15-20 days.
Contra Costa County represents an outstanding opportunity for battery distributors. Contra Costa County’s combination of major petrochemical complex, growing solar market, and Bay Area logistics operations creates sustained battery market opportunity.
Electric Vehicle Batteries — DZF / DMF / EVF Series
| Model | Voltage | Capacity | Application | Weight |
|---|---|---|---|---|
| 6-DZF-12 | 12V | 12Ah | Electric bicycle, light EV, e-scooter | 3.85-4.20 kg |
| 6-DZF-20 | 12V | 20Ah | Electric tricycle, light cargo EV | 6.20-6.80 kg |
| 6-DZF-24 | 12V | 24Ah | E-bike fleet, delivery tricycle | 7.50-8.10 kg |
| 6-DZF-30 | 12V | 30Ah | Heavy e-bike, cargo tricycle | 9.00-9.80 kg |
| 6-DMF-30 | 12V | 30Ah | Medium electric vehicle, golf cart | 9.50-10.30 kg |
| 6-DMF-45 | 12V | 45Ah | Golf cart, low-speed EV, utility vehicle | 13.0-14.20 kg |
| 6-EVF-30 | 12V | 30Ah | Electric-assisted tricycle, light EV | 9.80-10.50 kg |
| 6-EVF-45 | 12V | 45Ah | Electric four-wheel vehicle, sightseeing car | 14.0-15.20 kg |
| 6-EVF-55 | 12V | 55Ah | Electric four-wheel cargo vehicle | 16.5-17.80 kg |
| 3-DZF-20 | 36V | 20Ah | E-bike pack, tricycle motive power | 11.0-12.00 kg |
| 4-DZF-20 | 48V | 20Ah | E-bike pack, delivery vehicle | 14.5-15.50 kg |
| 4-DMF-30 | 48V | 30Ah | Heavy electric tricycle, cargo EV | 19.0-20.50 kg |
Pre-Assembled Voltage Packs — Ready to Install
| Model | Voltage | Capacity | Type | Application | Weight |
|---|---|---|---|---|---|
| 48V 20Ah Pack | 48V | 20Ah | DZF / Gel | E-bike fleet, last-mile delivery | 15.0-16.50 kg |
| 48V 30Ah Pack | 48V | 30Ah | DMF / AGM | Cargo tricycle, heavy delivery EV | 20.0-21.50 kg |
| 48V 40Ah Pack | 48V | 40Ah | DMF / Gel | Electric rickshaw, cargo vehicle | 25.0-27.00 kg |
| 60V 20Ah Pack | 60V | 20Ah | DZF / Gel | Electric moped, e-bike fleet | 18.0-19.50 kg |
| 60V 30Ah Pack | 60V | 30Ah | DMF / AGM | Electric tricycle, cargo EV | 24.0-26.00 kg |
| 60V 45Ah Pack | 60V | 45Ah | EVF / Gel | Heavy cargo EV, industrial tricycle | 32.0-34.50 kg |
| 72V 30Ah Pack | 72V | 30Ah | DMF / AGM | Electric four-wheel vehicle, golf cart | 28.0-30.00 kg |
| 72V 45Ah Pack | 72V | 45Ah | EVF / Gel | Heavy golf cart, industrial EV | 38.0-40.50 kg |
| 36V 10Ah Pack | 36V | 10Ah | DZF / AGM | Light e-bike, compact EV | 9.50-10.50 kg |
| 36V 20Ah Pack | 36V | 20Ah | DZF / Gel | E-bike fleet, delivery pack | 12.0-13.50 kg |
Energy Storage & UPS Batteries — Full Product Range
| Model | Voltage | Capacity | Type | Application | Weight |
|---|---|---|---|---|---|
| 6-CNF-38 | 12V | 38Ah | AGM | Residential solar storage, small UPS | 11.0-12.50 kg |
| 6-CNF-65 | 12V | 65Ah | AGM | Commercial solar, medium UPS backup | 18.5-20.50 kg |
| 6-CNFJ-65 | 12V | 65Ah | Gel | Solar storage, high-temp / humid climate | 19.5-21.50 kg |
| 6-CNF-100 | 12V | 100Ah | AGM | Commercial UPS, solar storage array | 28.0-30.50 kg |
| 6-CNFJ-100 | 12V | 100Ah | Gel | Premium solar storage, grid resilience | 29.5-32.00 kg |
| 6-CNF-150 | 12V | 150Ah | AGM | Large commercial UPS, solar farm | 42.0-45.00 kg |
| 6-CNFJ-150 | 12V | 150Ah | Gel | Solar-plus-storage, industrial UPS | 44.0-47.00 kg |
| 6-CNF-200 | 12V | 200Ah | AGM | Data centre UPS, large solar storage | 56.0-60.00 kg |
| 6-CNFJ-200 | 12V | 200Ah | Gel | Grid backup, telecom UPS | 59.0-63.00 kg |
| 6-CNF-250 | 12V | 250Ah | AGM | Industrial UPS, utility-scale solar storage | 68.0-72.00 kg |
| GFM-100 | 12V | 100Ah | VRLA AGM | UPS systems, telecom backup power | 28.0-31.00 kg |
| GFM-150 | 12V | 150Ah | VRLA AGM | Commercial UPS, data centre backup | 42.0-45.00 kg |
| GFM-200 | 12V | 200Ah | VRLA AGM | Industrial UPS, hospital backup power | 56.0-60.00 kg |
| OPzV-200 | 2V | 200Ah | OPzV Gel | Long-life telecom, solar storage | 14.0-16.00 kg |
| OPzV-500 | 2V | 500Ah | OPzV Gel | Industrial UPS, utility storage | 35.0-38.00 kg |
| OPzV-1000 | 2V | 1000Ah | OPzV Gel | Large UPS systems, telecom exchange | 68.0-73.00 kg |
How We Work with Contra Costa County Importers — Step by Step
Step 1 — Initial Consultation: Contact our Contra Costa County (California) sales team via email at sales@chisen.cn or WhatsApp at +86 131 6622 6999. We respond within 4 business hours.
Step 2 — Product Selection and Quotation: Our technical team selects optimal CHISEN battery models for your applications. Detailed quotation within 24 hours.
Step 3 — Sample Order: We ship 5-10 sample units by DHL or FedEx for your quality evaluation. Lead time 7-10 days.
Step 4 — Full Container Order: Upon sample approval, we process full container orders (20GP / 40GP / 40HQ).
Step 5 — Customs Clearance and Delivery: Our freight forwarding partner handles US customs clearance under HTS Chapter 8507 and delivery to your warehouse.
Step 6 — After-Sales Support: CHISEN provides technical documentation, warranty support, and a dedicated US account manager. Warranty terms are 12-24 months.
Questions Contra Costa County Importers Ask — Straight Answers
Q: What import duties apply to lead-acid batteries from China?
A: Lead-acid batteries imported from China are subject to US Harmonised Tariff Schedule Chapter 8507, with MFN duty rates of 3.4-3.5% ad valorem.
Q: What is the typical transit time from China?
A: FCL ocean freight to US West Coast takes 12-22 days, East Coast takes 22-30 days, and Gulf Coast takes 20-28 days. Express air freight for samples takes 7-10 days.
Q: Do CHISEN batteries carry required certifications?
A: Yes. CHISEN batteries carry CE, ISO 9001, ISO 14001, and UN38.3 certifications.
Q: What warranty terms are available?
A: CHISEN offers a 12-month warranty for motive power and UPS applications, and up to 24 months for solar storage applications.
Q: Can CHISEN supply motive power batteries for industrial operations?
A: Yes. CHISEN OPzS flooded and AGM deep-cycle batteries are widely used in industrial and warehousing logistics operations.
Q: Do CHISEN Gel batteries work for solar-plus-storage installations?
A: Yes. CHISEN deep-cycle AGM and Gel batteries are designed for solar-plus-storage applications.
Contact CHISEN
Ready to source CHISEN batteries for your Contra Costa County (California) distribution business? Our international trade team speaks English and is ready to provide a detailed quotation for your volume requirements.
Email: sales@chisen.cn
Website: www.chisen.cn
WhatsApp / Mobile: +86 131 6622 6999
Wechat: chisenbattery
CHISEN Battery — trusted by battery distributors, solar installers, and industrial buyers across the Americas.
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