Does the battery require maintenance?

No, it is completely maintenance-free throughout its lifetime.

High-Capacity 12.8V 300ah Lithium Ion Portable Battery Pack

Name: High-Capacity 12.8V 300ah Lithium Ion Portable Battery Pack
Brand: Shenzhen Sunstone Power Technology Co., Ltd
SKU: 1964272001

Guangdong, ChinaShenzhen Sunstone Power Technology Co., Ltd

US$400.00-600.00

3 Pieces

Sample price:US$400.00/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

LFP

Model NO.

SLPO12-300N

Rechargeable

Yes

Size

Medium

Usage

Energy Storage

Rated Voltage

12.8V

Rated Capacity

300ah

Weight

29kg

Nominal Energy

3.84kwh

Service Life

6000 Cycles at 80% Dod

Charging Voltage

14.4±0.2V

Peak Discharge Current

100A

Dod Discharge Rate

100%

Charging Operating Temperature

0~45°C

Discharge Operating Temperature

-20~55°C

Degree of Protection

IP54 or Above

Constant Current Discharge

100A

Constant Power Discharge

1280W

Constant Power Discharge (Cell)

320W

Transport Package

Carton Packaging

Specification

483(L)*170(W)*240(H)mm

Trademark

Sunstone Power

Origin

China

HS Code

850760

Production Capacity

5, 000, 000 Piece / Month

Key features

Super Long Cycle Life: Over 6000 cycles at 80% DOD for extended usage.

Fast Charging Capability: Supports fast charging up to 50A for quick power replenishment.

Smart BMS Protection: Built-in BMS protects against over-charge, over-discharge, and short-circuit.

Bluetooth Monitoring: Check detailed battery status via APP with Bluetooth connectivity.

High Safety Performance: No explosion or fire risk under collision; leakage-proof design.

Maintenance-Free Operation: Completely maintenance-free throughout the battery lifetime.

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: ≤0.10hTerms 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.