- Choosing a selection results in a full page refresh.
We offer FREE shipping on all orders to most countries and regions.
Orders shipped from the EU warehouse: Free shipping is available to mainland EU countries (excluding remote islands).
Orders shipped from China: Free shipping is available to the EU, US, and other major regions (excluding remote islands).
Note: If your shipping address is in the UK, Switzerland, or Norway, and your order is shipped from our European warehouse, additional shipping fees will apply. Any customs duties or taxes incurred for these destinations must also be covered by the customer.
After you place an order, we will process it within 1-2 business days. Depending on your shipping address, we will ship from the nearest warehouse so you can receive your items as soon as possible.
Contact us at service@better-ess.com to check the stock level of your nearest warehouse.
We stand behind the quality and performance of our products through comprehensive warranty coverage.
All LiFePO4 Cells Batteries can receive a 5-year warranty, when used correctly according to the product manual instructions.
Mobile ESS and DIY Case Kit are also warranted for 5 years.
Battery chargers carry a 2-year warranty.
Accessories are covered by a 1-year warranty.
All warranties are effective from the date of purchase by the end user. Correct installation and usage as specified in the product manual are required to maintain warranty eligibility.
Please take time to carefully review the manual prior to setup and operation to ensure proper use and long-lasting performance from your BetterESS LiFePO4 System. We're here to support you throughout the warranty periods.
We provide lifetime customer support to ensure you enjoy a worry-free experience with our products.
Whether you have questions about installation, usage, or maintenance, our dedicated team is always here to help — anytime you need us.
Contact us (Email): service@better-ess.com
The Price listed is the final price! Free shipping, free customs duties and tax, You don't need to pay any other fees.
🔋 Build Your Own Sodium-Ion Energy Storage System
Our 45V 200Ah 9kWh Sodium-Ion DIY Battery Pack is designed for customers who want to build a reliable, flexible, and high-capacity home energy storage system.
Featuring Sodium-Ion battery technology and a JK 200A Smart BMS, this DIY battery pack provides intelligent battery management, active cell balancing, and multiple communication options for convenient monitoring and system integration.
The DIY design gives you the flexibility to build your own battery system according to your energy storage needs. It is ideal for home solar storage, off-grid systems, backup power, RVs, and other energy storage applications.
🔋 9kWh High Energy Capacity
Provides approximately 9kWh of energy storage with a 45V 200Ah configuration, suitable for home and solar energy storage applications.
🧂 Sodium-Ion Battery Technology
Uses next-generation Sodium-Ion battery technology, offering an alternative solution for stationary energy storage applications.
⚡ JK 200A Smart BMS
Built-in JK 200A BMS provides comprehensive protection and intelligent battery management, helping monitor voltage, current, temperature, and cell balance.
⚖️ 2A Active Balancing
Built-in 2A active balancing helps maintain cell voltage consistency and improves the overall performance of the battery pack.
📱 Bluetooth & APP Monitoring
Monitor important battery parameters conveniently through Bluetooth and the JK APP.
📺 Smart Display
The integrated display provides convenient access to important battery information.
🛠️ DIY-Friendly Design
Designed for DIY battery builders, allowing you to assemble and configure your own Sodium-Ion energy storage system.
🔌 Expandable Energy Storage
Supports parallel connection, allowing you to expand your total energy storage capacity when required, subject to BMS and inverter compatibility.
☀️ Ideal for Solar Energy Storage
Suitable for home solar systems, off-grid applications, backup power, RVs, and other stationary energy storage projects.
| Item | Description |
|---|---|
| Battery Type | Sodium-Ion |
| Nominal Voltage | 45V |
| Battery Capacity | 200Ah |
| Energy Capacity | Approx. 9kWh |
| BMS | JK Smart BMS |
| Maximum Continuous Current | 200A* |
| Active Balancing | 2A |
| Communication | Bluetooth / APP |
| Display | Smart Display |
| Application | Home Solar ESS / Off-Grid / Backup Power / RV |
| Design | DIY Battery Pack |
| Connection | Supports Parallel Connection* |
* Actual operating current and parallel configuration depend on the selected cells, BMS settings, inverter, wiring, and installation conditions.
The battery system can be used with compatible solar and hybrid inverters. Please confirm the inverter's battery voltage range, communication protocol, charging voltage, and discharge voltage before purchase.
Compatible inverter brands may include:
Deye, Growatt, PYLONTECH, Victron Energy, INVT, GoodWe, Voltronic Power, SRNE, Megarevo, LuxPowerTek, SMA, MUST, and other compatible inverter systems.
More any questions about the BetterESS Power Battery?
Email: service@better-ess.com
Thanks for subscribing!
This email has been registered!
⭐⭐⭐⭐⭐ Review Great supplier! Excellent support and very fast delivery from the EU warehouse. The battery cells arrived in perfect condition, well packed, and the quality is top-level (A-grade). Communication was clear and professional the whole time. Highly recommended!
hese are really excellent and of the highest quality, highly recommended, and do not become unbalanced even when charging if they exceed 120/130Ah.
Excellent batteries, all perfect in terms of weight and current capacity.
good service, i had a littble problem with the address, seller helped me to solve. finished the install 2 days ago, everything ok
swietne ogniwa pojemnosć zmiezona 685.55ah fajne busbary elastyczne ogniwa proste
