Solar Lithium Stackable Battery 20kwh 51.2v/48v 400ah Deep Cycle
From $2,800.00Login for exact price
CMX Battery 51.2V 400Ah 20 kWh home energy storage battery — factory-direct from a LiFePO4 battery manufacturer and OEM/ODM partner, supplied wholesale and in bulk with private-label options.
- Performance: 6,000+ cycles @ 80% DoD with Grade A automotive cells and smart BMS protection; 5–10 year warranty.
- Compliance: Certified to CE, RoHS, UN38.3 and IEC62619 (UL available); CAN / RS485 / RS232 for inverter and EMS integration.
- Best for: Residential solar self-consumption; Off-grid and hybrid homes; Backup power during outages.
Overview: Solar Lithium Stackable Battery 20kwh 51.2v/48v 400ah Deep Cycle
51.2V 400Ah 20 kwh CMX Battery home energy storage battery is a drop-in LiFePO4 replacement engineered for demanding home energy storage applications. Built with automotive-grade cells and a smart BMS, it delivers longer cycle life, faster charging and a lighter footprint than the lead-acid battery it replaces. As a LiFePO4 battery manufacturer and OEM/ODM partner, CMX Battery supplies this model in wholesale and bulk quantities with flexible private-label options.
Key Specifications
| Chemistry | LiFePO4 (Lithium Iron Phosphate) |
|---|---|
| Nominal Voltage | 51.2 V |
| Capacity | 400 Ah |
| Energy | 20 kwh |
| Cycle Life | 6,000+ cycles @ 80% DoD |
| Certifications | CE, RoHS, UN38.3, IEC62619, MSDS |
| Communication | CAN bus / RS485 / RS232 (select models) |
| Warranty | 5–10 years (model dependent) |
Applications & Use Cases
- Residential solar self-consumption
- Off-grid and hybrid homes
- Backup power during outages
- Time-of-use load shifting
- Balcony and cottage systems
Browse the full range in our Home ESS batteries category.
Key Features
- Modular & Stackable Design: Each unit is part of a stackable battery system, available in 5kWh or 10kWh modules. Connect up to 16 modules in parallel to reach a total capacity of 160kWh, offering unmatched flexibility.
- 200Ah Lithium Battery Core: Built with premium-grade LiFePO4 200Ah lithium battery cells, providing consistent output, deep cycle performance, and thermal stability.
- Over 6,500 Cycles & 10+ Years Lifespan: Enjoy long-term energy security with deep cycle durability and industry-leading cell chemistry.
- Advanced Smart BMS Protection: The integrated Battery Management System ensures safe operation through overvoltage, short-circuit, overcurrent, and temperature control.
- Wide Inverter Compatibility: Fully compatible with off-grid and hybrid inverters for homes, telecom towers, microgrids, and commercial setups.
- Stackable 48V / 51.2V modules
- Compatible with leading hybrid inverters
- Safe LiFePO4 with automotive-grade cells
- Mobile app monitoring (optional)
Why Choose CMX Battery — LiFePO4 Battery Manufacturer & OEM/ODM Partner
CMX Battery is a LiFePO4 battery manufacturer with in-house cell sourcing, BMS engineering and pack assembly. We support wholesale, bulk and OEM/ODM orders with competitive MOQ, factory-direct pricing (FOB Shenzhen; EXW / CIF / DDP available) and global shipping. Every pack uses Grade A cells and is certified to CE, RoHS, UN38.3, IEC62619 and UL standards, backed by a 5–10 year warranty and responsive technical support.
Home ESS Battery FAQ
Which inverter is CMX Battery home battery compatible with?
CMX Battery home batteries speak CAN / RS485 / RS232 and pair with Luxpower, Deye, Growatt, Solax, Victron and most hybrid inverters.
Is a home lithium battery safe indoors?
Yes. LiFePO4 is the safest lithium chemistry — non-combustible, no off-gassing — and our modules include multi-layer BMS protection.
How much storage do I need for my home?
A typical home uses 5–15 kWh/day. CMX Battery 48V 100Ah (5.12 kWh) modules stack to match your solar array and backup needs.
Request a Quote
Need volume pricing, custom voltage/capacity or private-label branding? Contact our sales team for a quote, or review frequently asked questions about shipping, lead time and OEM service. See our Shipping & Delivery guide for battery logistics.
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Product & Packaging Details
Q: Do batteries include protection circuits(BMS) and connectors?
A:Protection: We supply batteries with BMS built in Protection Circuit Modules (PCM).
Connectors: We normally use standard like anderson,M8 lugs,Fast plugs or depends on OEM customer's demands.
Q: Are batteries Grade-A and brand new?
A: Yes, we use 100% brand new, Grade-A cells in all our batteries.
Q: Can you print our logo on the batteries?
A: Yes, we offer free custom logo printing with a minimal MOQ requirement.
Q: What is your standard packaging? Can it be customized?
A: Our standard is a white box per battery. We fully support customized packaging, including carton box and logo design.
Yes. CMX Battery is a manufacturer located in Shenzhen, Guangdong, China. It designs and produces LiFePO4 battery packs for energy storage, electric forklifts, marine applications, golf carts, RVs, and UPS systems.
Lead time depends on the product: standard battery packs are typically 15-25 days, while larger integrated systems such as our mobile EV charging units are 35-45 days. The exact schedule is confirmed in your quotation.
The company has strategic cooperation agreements with top manufacturers like EVE and REPT, and insists on using A+ tier One lithium iron phosphate cells for its solar batteries.
For 48V inverters, compatible brands include Victron Energy, Goodwe, Studer, Solis, LuxPower, and others. For high-voltage three-phase inverters, compatible brands include Atess, Solinteg, SAJ, Goodwe, and Solis.
CMX Battery offers dealer customers a 10-year warranty and technical service for its energy storage battery products.
DoD describes how much of the battery's capacity has been used. A DoD of 100% means the battery is completely empty, while 0% means it is full.
SoC reflects the battery's charge level. A SoC of 100% means the battery is full, and 0% means it is empty.
C-rate, or power factor, indicates how quickly a battery can be charged or discharged relative to its capacity. A rating of 1C means the battery can be fully charged or discharged in one hour.
The battery uses Lithium Iron Phosphate chemistry and provides a cycle life of over 6,000 cycles at 90% Depth of Discharge, and over 10 years at one cycle per day.
kW (kilowatt) is a unit of power, measuring the rate of energy production or consumption. kWh (kilowatt-hour) is a unit of energy, measuring the total amount of work done or energy used over time.
CMX Battery home batteries are suitable for both indoor and outdoor installation (depending on the model's protection level) and offer floor-standing or wall-mounted options. Common locations include garages, attics, or under eaves.
This depends on the load. As a realistic example, a 10kWh battery could run ten 100-watt light bulbs for 12 hours without recharging.
The number varies based on home size, energy consumption history, and personal goals (like which devices to run during an outage). For most systems, 2 or 3 batteries are installed. A detailed discussion of your needs is recommended for an accurate assessment.
Yes, it is possible, but it requires careful planning and significant investment. A true off-grid system needs a large enough solar array and sufficient battery storage to sustain your lifestyle. Cost and having an alternative energy source for when solar charging isn't possible are key considerations.
No. CMX Battery focuses on building long-term relationships with business partners like battery distributors, solar equipment dealers, and installation contractors worldwide, not direct sales to end consumers.



Inverter brand list — 48V / 51.2V hybrid and off-grid inverters
Our low-voltage packs communicate over CAN and RS485, which is how these hybrid and off-grid inverters read pack voltage, current and state of charge. Tell us your inverter model and firmware version and we will confirm the pairing before you order.
Luxpower
Sol-Ark
Solax
Sinexcel
SolarMax
Megarevo
Sungrow
Sunsynk
ATESS
EPEVER
Voltronic
GoodWe
Hypontech
INVT
Schneider
SRNE
Sorotec
Victron
KOYOE
Deye
Seneigy
Sofar
Growatt
MUST
SMA- SolisSolis
- MorningstarMorningstar
- OutBackOutBack
- PhocosPhocos
- StuderStuder
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