Can I expand the capacity later?

Yes,the S3-20 is stackable. Start with one module (2,000 Wh) and add more as needed; each is compact and lightweight (225 x 350 x 174 mm, 20 kg). Tell us your target capacity and inverter model for the max stack configuration.

Certifications, warranty and after-sales?

CE certified, LiFePO4 with built-in BMS protection and IP65 outdoor enclosure. Warranty and technical support provided, with faster spare-parts handling for EU customers thanks to our European stock.

44444EU Warehouse 2kwh LiFePO4 Stackable off-Grid Solar Home Battery with IP65 PV Charging Smart APP Control

Name: 44444EU Warehouse 2kwh LiFePO4 Stackable off-Grid Solar Home Battery with IP65 PV Charging Smart APP Control
Brand: Kunlu Electronic Technology(shanghai) Co., Ltd.
SKU: 2186564862

Shanghai, ChinaKunlu Electronic Technology(shanghai) Co., Ltd.

US$369.00

50-199 Pieces

US$359.00

200+ Pieces

Product specifications

Color

Capacity

Output voltage

Product profile

Customization

Available

Weight

20kg

Warranty

5 Years

Model NO.

DC S3-20

Cycle Life

6000 Cycles

Nominal Capacity

2kWh

Maximum Expandable Capacity (kWh)

Protection Class

IP65

Output Power Range

1200W-2400W

Selling Units

Single Item

Battery Type

LiFePO4 System Voltage

Operating temperature

-20~55°C

Recommended Module Power (W)

300-600+W

Maximum PV Input Power (W)

2400W

Number of Input Channels

Rated Voltage (V)

51.2

Maximum Current (A)

Communication

WiFi(BT)+RS485

Smart App

Supported

EU Stock

Yes

Cooling Method

Natural Cooling

Transport Package

Carton

Specification

350*174*225

Trademark

Kunlu

Origin

China

Key features

EU warehouse stock in Germany with 2 to 5 working day delivery across all EU member states, zero cross-border duties and no import VAT prepayment for EU-based buyers.

Direct PV charging via built-in MC4 solar input ports - simply connect your balcony solar panels to the S3-20 and start charging immediately, no additional charge controller or adapter required.

IP65 fully sealed enclosure rated for complete dust protection and low-pressure water jets, enabling reliable year-round operation on exposed balconies from -20 C to 55 C.

Smart App control via built-in WiFi: monitor real-time PV input power, battery state of charge, charge/discharge status, and cumulative energy savings on your smartphone with both iOS and Android supp

CE, RoHS, and WEEE certified for the European market

Company profile

Exhibition ExperienceNational Award receivedStandardized Supplier ManagementOverseas Services

Kunlu Electronic Technology(shanghai) Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 Years CertifiedNearest Port: Shanghai Port, Ningbo Port CertifiedTerms of Payment: T/T, LC, Western Union, etc. CertifiedInternational Commercial Terms(Incoterms): EXW, CFR, CIF, FOB

About Our Factory & Business Background

AddressRoom 313, 3rd Floor, Building 1, No. 2228, Lianhua South Road, Minhang District, Shanghai, China

Plant Area284.66 square meters

Number of Employees12

Registered Capital10,000,000 RMB

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: within 15 workdays

Minimum Order Quantity10 Sets

Supply Chain Partners90

Our Production Capability & Technical Expertise

Main ProductsSodium-ion Battery, Lithium Battery, BMS, Balcony Solar PV Kit, All-in-One Balcony Solar Storage System

Our Industry Experience & Global Business Record

Year of Establishment2020-09-04

Main MarketsNorth America, South America, Europe, Southeast Asia/ Mideast, Australia, Domestic

Repeat Buyers Choice30%~50%

Number of Foreign Trading Staff6

Overseas Agent/BranchNo

New Products Launched in Last yearYes

Product Q&A

Q:Are you a trading company or manufacturer?

We are a comprehensive technology enterprise with capabilities in R&D, design, and OEM manufacturing.

Q:Can I have my own customized product?

Yes. OEM&ODM are available, including design, logo, package etc.

Q:Do you have stock in Europe / Germany? How fast is delivery?

Yes, we keep EU stock in Netherland and Germany. Dispatch is about 5 days for 50 units; larger orders are negotiable. Contact us with your city and quantity for exact delivery terms.

Q:What is a "DC Balcony ESS" and how does it work?

It's a DC-coupled storage battery (LiFePO4, 51.2 V, 2,000 Wh) that connects on the DC side of your balcony solar system , surplus solar power is stored first and used later through your inverter, maximizing self-consumption. IP65-rated for outdoor balcony installation.

Q:Is it compatible with my existing panels and inverter?

Designed for DC-coupled setups with standard balcony panels. Since it must match your inverter's input range, send us your panel and inverter/microinverter models and our engineers will confirm compatibility before you order.