How should the battery be maintained if not used?

It requires an additional charge every three months to avoid irreversible sulfating.

Rechargeable 12V 200ah AGM Gel Deep Cycle Solar Battery for Solar Panel System

Name: Rechargeable 12V 200ah AGM Gel Deep Cycle Solar Battery for Solar Panel System
Brand: Shenzhen Sunstone Power Technology Co., Ltd
SKU: 2107709305

Guangdong, ChinaShenzhen Sunstone Power Technology Co., Ltd

US$10.00-195.00

20 Pieces

Product profile

Customization

Available

Type

Lead-Acid Batteries

Usage

UPS, Energy Storage

Model NO.

ML12-200

Nominal Voltage

12V

Discharge Rate

Low Discharge Rate

Shape

Square Battery

Electrolyte

Acid

Installation

Fixed

Rechargeable

Chargeable

Rated Voltage

12V

Rated Capacity

200ah

Weight

60kg

Maintenance Free

Maintenance Free Throughout Life Time

Transport Package

Carton+Pallet

Specification

522x240x218mm

Trademark

Sunstone Power

Origin

China

HS Code

850760

Production Capacity

5, 000, 000 Piece / Month

Key features

Maintenance-Free Operation: Requires no water addition or maintenance throughout its entire lifetime.

High Discharge Current: Capable of delivering up to 2100A max discharge current for 5 seconds.

Flame Retardant Case: ABS case with Flame Retardant V0 rating for enhanced safety.

Low Self-Discharge Rate: Can be stored for up to 6 months without requiring a charge.

ISO and CE Certified: Approved by ISO9001, ISO14001, CE, IEC, VDS, and RISTI standards.

Fast Global Delivery: Warehouses in Germany and Indonesia support fast delivery to Europe and Southeast Asia.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceIn-stock CapacityFast Delivery

Shenzhen Sunstone Power Technology Co., Ltd

Guangdong, China

Business Type: Manufacturer/Factory, Group CorporationExport Year: 2003-07-08Nearest Port: ShenzhenAverage Response Time: ≤0.12hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummarySunstone Power Industry Co., Ltd. is identified as a factory and reports two China-based production facilities covering lead-acid and lithium batteries, with overseas entities in Germany and Indonesia. It has 20 years of stated energy-product experience, exports 90% of sales, and supplies customers in more than 100 countries. Reported certifications include ISO 9001, ISO 14001, and CE. The supplier offers broad customization, inventory capability, and overseas warehouse services. Production-related evidence includes one-month peak and off-season lead times, but no annual output quantity is provided; the available output field contains a monetary figure and is therefore omitted. Weaknesses or uncertainties include no written supplier-approval, corrective-action, complaint-handling, or service-assessment procedures, and unknown outsourcing-procedure and contract statuses. No specific customer cases are provided.

Supplier typeThe supplier is explicitly classified as a factory and is described as operating two factories in China: a lead-acid battery factory in Jiangxi and a lithium battery factory in Guangdong. Overseas companies in Germany and Indonesia indicate an international operating structure, but the supplied evidence does not establish whether all production is directly controlled by the stated company.

CertificationsThe supplier reports CE product compliance certification and ISO 9001 and ISO 14001 management-system certifications. These certifications provide explicit evidence of compliance and management-system credentials, although the specific certified products or certificate validity periods are not stated.

R&D capabilityThe supplier has a lithium battery production factory, offers multiple battery technologies including lithium-ion and LiFePO4 products, and reports R&D engineer experience of 6–10 years. These facts support product-development capability, but no evidence quantifies new-product launches, patents, dedicated R&D investment, or innovation outcomes.

Production capacityThe supplier reports two production factories, 20 years of energy-product experience, worldwide distribution, and one-month lead times in both peak and off-season periods. It also reports 6–10 quality-control staff and 6–10 years of R&D-engineer experience; however, annual production volume cannot be assessed because the provided output field is monetary and no unit-based capacity is stated.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of a broad customization service range.