Chanming New Energy 
Chanming Modular Stacked Energy Storage System (20-64 kWh): Product Specifications and Detailed Explanation of Small Business Scenarios in Africa
In a medium-sized supermarket in Kano, Nigeria, the power grid only provides power for 6-8 hours a day. Boss Mustafa installed a 20 kWh off grid energy storage system three years ago, combined with a rooftop 15 kW photovoltaic array. Now, the freezer, cash register system, and security monitoring can operate 24 hours a day without interruption. Recently, he rented a new storefront next door and plans to expand the system to 40 kWh - no need to change cabinets, just add two layers of modules to the existing battery tower.
This is not a hypothetical scenario. Small commercial and industrial users are becoming the fastest-growing segment of the energy storage market in sub Saharan Africa, off grid islands in Southeast Asia, and high-temperature regions in the Middle East. What they need is not a household grade 5-10 kWh wall mounted battery, but a modular stacking system with expandable capacity, flexible installation, and the ability to withstand high temperatures and dusty environments.
This article will introduce the core specifications, expansion logic, and typical applications of the Chanming modular stacked energy storage system (20 kWh/40 kWh/64 kWh three levels) in Africa's small business scenarios.
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1. Product Overview: From Single Modules to Battery Towers
The Chanming stacked energy storage system adopts a modular design , with a rated capacity of 5.12 kWh per standard module (51.2 V/100 Ah, LiFePO4 battery cells). Users can flexibly combine according to their load requirements:
| Configuration level | Number of modules | Total capacity | Rated voltage | Maximum continuous discharge power | Typical application scenarios |
|---|---|---|---|---|---|
| Basic type | 4 modules | 20.48 kWh | 51.2 V | 10 kW | Small shops, clinics, offices |
| Standard type | 8 modules | 40.96 kWh | 51.2 V | 20 kW | Medium sized supermarkets, gas stations, and small factories |
| Expansion type | Module 12 | 61.44 kWh | 51.2 V | 30 kW | Large warehouses, communication base stations, and resorts |
Table 1: Chanming Three level configuration specifications for stacked energy storage system
Note: The above discharge power is the system level output capability, and actual operation requires matching with the corresponding power inverter or inverter control integrated machine. Chanming provides 10 kW/16 kW reverse control all-in-one machines as matching options.The system adopts a cabinet style tower structure, with a single module weight of about 45 kg. The bottom is equipped with a roller base with locking function, which is convenient for manual movement and positioning in small warehouses without forklifts. The modules are connected through quick plug power and communication interfaces, and installation personnel do not need to weld or arrange complex cables. They can complete the installation or replacement of a single module within 30 minutes.
Figure 1: Chanming Factory shot of stacked energy storage system (side view). The black cabinet style tower structure consists of a 5.12 kWh standard module on each floor, with a roller base at the bottom for easy on-site installation and positioning.
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II. Core Technical Parameters
2.1 Cell and Battery Management
| Parameters | Specifications |
|---|---|
| Cell chemical system | LiFePO4 (lithium iron phosphate) |
| Nominal voltage | 51.2 V DC |
| Single module capacity | 5.12 kWh |
| Recommended DoD | 90% |
| Cycle life @ 25 ° C, 0.5C | 8000+cycles (>80% EOL capacity) |
| Calendar lifespan | 15 years |
| Operating temperature range | Charging: 0-55 ° C; Discharge: -20-60 ° C |
| Protection level | IP20 (in cabinet)/optional IP54 Outdoor cabinet |
| BMS Function | Overcharge/Over discharge/Over temperature/Short circuit protection, SOC/SOH estimation, passive balancing |
| BMS Communication interface | CAN 2.0B + RS485（Modbus RTU） |
Table 2: Chanming Core Technical Parameters of Stacked Energy Storage System
Why choose LiFePO4 for the stacking system? In high-capacity energy storage systems at the 20-64 G5 level, cell safety and long-term consistency are more important indicators than energy density. The thermal runaway temperature of LiFePO4 is as high as 270-350 ° C, which is far below the thermal runaway trigger threshold even without air conditioning operation in the 45 ° C high-temperature computer room in Africa. In contrast, the capacity decay rate of the NMC system at the same temperature is 2-3 times that of LiFePO4, and additional thermal management investment is required. In addition, the charge discharge curve of LiFePO4 is flat (3.2 V plateau length), which means that in most SOC ranges, the system output voltage is stable, the inverter operating point fluctuates less, and the overall conversion efficiency is higher.---
III. Applicable Scenarios and Target Customers
The African small business market has three major characteristics: high power outage frequency, high electricity price substitution motivation, and limited initial budget. The "modular+scalable" design of the stacked energy storage system perfectly matches these needs: users can first buy 20 kWh to solve their most urgent freezer/lighting/cashier needs, and then install them layer by layer to 40 kWh or 64 kWh after business growth.| Application scenarios | Typical load list | Recommended initial configuration | Photovoltaic matching | Estimated daily cycle times |
|---|---|---|---|---|
| Community clinics | Vaccine refrigerators (500 W), lighting (200 W), medical equipment (300 W) | 20 kWh | 5–8 kW | 1–1.5 Secondary |
| Roadside gas stations | Gas machines (2 kW), convenience store refrigerators (1.5 kW), LED signs (500 W) | 40 kWh | 10-15 kW | 1-2 times |
| Medium sized supermarkets | Multiple sets of refrigerators (5 kW), cash register systems (1 kW), security monitoring (500 W) | 40-64 kWh | 15-20 [] G7 | 1-2 times |
| Communication base stations | BTS equipment (3-5 kW), air conditioning (2 kW) | 40-64 kWh | 10-15 kW | 1-2 Off grid resorts |
| Guest room air conditioning (10 kW), hot water pump (3 kW), kitchen equipment (5 kW) | 64 kWh+ | 20-30 kW | once |
Table 3: Typical application scenarios and configuration suggestions for small businesses in Africa
Load power and operating time are only examples, and actual selection needs to be simulated and calculated hourly based on the customer's load profile. The technical team can provide preliminary capacity assessment support based on HOMER or PVsyst.
Figure 2: Stacked energy storage systems and photovoltaic arrays installed outside a medium-sized supermarket in the suburbs of Nairobi, Kenya, Africa. Modular design allows owners to gradually expand their business without having to invest the entire budget at once.
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IV. Installation, Expansion, and Maintenance
4.1 Installation Requirements
- Space : The single tower (12 modules) occupies an area of about 0.6 m × 0.6 m, with a height of about 1.8 m, and requires a 0.3 m heat dissipation space reserved at the top;
- Ground : Flat cement ground or reinforced steel frame platform, with a load-bearing capacity of ≥ 600 kg;
- Environment : It is recommended to install in well ventilated indoor or covered outdoor areas; If outdoor direct sunlight is necessary, it is recommended to choose an IP54 outdoor cabinet;
- Electrical : Professional certified electricians are required to complete the wiring between the DC and AC sides, and the system does not support DIY installation.
4.2 Expansion Path
Typical process for scaling from 20 kWh to 40 kWh:
- Disconnect the system main switch and confirm zero voltage; Install 4 new modules (quick plug interface, no need to rewire) on the top of the existing battery tower;
- Execute "New Module Recognition" through the BMS management panel (automatically completed in about 5 minutes);
- Power on again, and the total system capacity will automatically update to 40.96 kWh.
4.3 Remote Monitoring
The system has a built-in Wi Fi/4G communication module (optional) that supports integration with the Chanming Cloud monitoring platform. Users can view it through the web or app:
- Real time SOC, SOH, cell voltage/temperature
- Daily/weekly/monthly charge and discharge statistics
- Alarm records and fault diagnosis codes
- Remote firmware upgrade (FOTA)
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Figure 3: Outdoor cabinet version stacked energy storage system (white background rendering). Designed with an IP54 protection level, it supports direct outdoor installation in high-temperature and dusty environments in Africa without the need for additional computer rooms.
Figure 4: Stacking system with screen control panel real-life shot. The LCD display screen displays SOC, voltage, current, and alarm status in real-time, and supports local parameter viewing and communication testing with G3.
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V. Certification and Quality Assurance
| Project | Status |
|---|---|
| CE Certification | ✅ Obtained (including IEC 62109) |
| UN38.3 | ✅ Complete test reports |
| UL 1973/UL 9540 | 📋 Available upon request |
| IEC 62619 | 📋 Available upon request |
| Warranty | 5-year overall warranty for the battery cell, with 8000 cycles or 10 years (whichever comes first) |
Table 4: Chanming Certification and Quality Assurance Checklist for Stacked Energy Storage Systems
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