Would 2 100ah batteries be better or the same as 1 of the 200ah?

As far as capacity goes it's the same. However, 2 100 ah batteries would be better than 1 200 ah battery. This is because if anything ever happens to the 1 200 ah hour battery your screwed until you get another one. But, if anything ever happens to one of your 2 100 ah hour batteries, you at least have that second one you can run off of until you can get a new 100 ah battery. It always better to have a battery bank consisting of at least two batteries in case anything ever happens. You also have

I am using 17k watt power per day. how many of this battery will I be needed for my power bank?

Dividing 17 kilowatt hours (kWh) by 12 volts I get 1417 amp hours. Batteries should be discharged to a maximum of 50% to provide reasonable service life. You would need 2834 amp hours of the rated capacity at 12 volts to operate and survive a couple years of the repeated discharge cycles. You need 15 of the 200Ah batteries (or 29 100Ah batteries.) Don't forget that you will also need to have approximately 20 kWh (1700Ah @ 12 volts) per day of charging capacity to accommodate battery storage and

High-Performance 12V 100ah Deep Cycle Battery for off-Grid Solar

Name: High-Performance 12V 100ah Deep Cycle Battery for off-Grid Solar
Brand: Shenyang Lanjian Technology Co., Ltd
SKU: 1984387012

Liaoning, ChinaShenyang Lanjian Technology Co., Ltd

US$256.20

5-499 Pieces

US$221.20

500+ Pieces

Sample price:US$298.00/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

LFP

Model NO.

12V100Ah

Rechargeable

Yes

Size

Medium

Certification

CE/Un38.3/CB, RoHS

Nominal Voltage

12.8V

Transport Package

430*272*315

Specification

12.8V 100Ah lithium ion Battery

Trademark

OEM

Origin

China

HS Code

8507600090

Production Capacity

50000

Key features

Extended Cycle Life: Up to 4500+ cycles at 80% DOD with LFP chemistry.

Comprehensive BMS Protection: Includes overcharge, over-discharge, short circuit, and thermal protection.

Flexible Connection Options: Supports up to 4 batteries in parallel and multiple batteries in series.

Maintenance Free Design: Sealed, leak-proof, and gas-free with no acid leakage.

Drop-in Replacement: Direct plug-and-play replacement for standard lead-acid batteries.

Durable Construction: Built with rugged ABS container and vibration-resistant design.

Company profile

High Repeat Buyers ChoiceExhibition ExperienceR&D CapabilitiesImporters and Exporters

Shenyang Lanjian Technology Co., Ltd

Liaoning, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.71h

AI-Powered supplier vetting

SummaryThe supplier is identified as a factory in Shenyang, with a business scope covering mechanical equipment, metal products, assistive bicycles, scooters, spare parts, tools, electronics, building materials, and technology import/export. It reports 90% export sales, five years of export experience, self-operated import/export rights, OEM and ODM services, and customization from customer designs. Service strengths include participation in an offline trade show, multiple quotation and payment options, and a complaint-handling procedure with records. However, it reports no inventory, overseas warehouse, showroom, agent, or branch capability, and zero countries offering overseas services. Supplier-service assessment lacks written procedures and records for corrective actions. R&D information indicates no new products in the past year, no SDK, and two R&D engineers. Quality-control evidence is incomplete, with zero listed testing equipment and unknown assurance and traceability status. No certification holding or...

Supplier typeThe supplier is explicitly identified as a factory located in Shenyang, while its stated business scope spans mechanical equipment, metal products, mobility products and parts, tools, electronics, building materials, and technology import/export. This supports classification as a manufacturing-oriented, broad-scope industrial supplier.

After-Sales capabilityThe supplier has a clear customer-complaint handling procedure with followed records and reports eight qualified suppliers for service capability. However, it has no in-stock service, overseas warehouse, showroom, overseas agent, or branch capability, and its service-capability assessment and corrective-action records are not documented; overseas service coverage is stated as zero countries.

R&D capabilityThe supplier provides ODM services and has two R&D engineers, but it reports no new products in the past year and no available SDK. These findings show some design-related capability but explicit weakness in recent product innovation and software-development support.

Customization capabilityBoth design-service records state customization from customer designs and minor customization, while the R&D information confirms ODM service availability. This is explicit evidence that the supplier can support at least design-based, minor, and ODM customization.