CMX 20kWh Stacked LiFePO4 Battery with Breaker, UL Certified

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CMX 20kWh Stacked LiFePO4 Battery with Breaker, UL Certified

The CMX 20kWh Stacked LiFePO4 Battery with Breaker, UL Certified is a stackable LiFePO4 battery for home and residential energy storage featuring UL-certified cells, integrated breaker. Engineered for long service life, a protected smart BMS, and safe, low-maintenance operation.

20kWh usable
6000+ cycle life · 5-year warranty
UL certificate
Long lifespan: 6000+ cycles

SKU: CMX2103924FS Category: Home Lithium Battery

Description

Overview

The CMX 20kWh Stacked LiFePO4 Battery with Breaker, UL Certified is a stackable LiFePO4 (lithium iron phosphate) battery built for home and residential energy storage. It delivers 20kWh of usable energy, combining a long cycle life, a fully protected smart BMS, and a space-saving stackable form factor into a safe, maintenance-light energy storage solution. CMX uses automotive-grade LiFePO4 cells and a self-developed BMS so the pack stays balanced, efficient, and protected across its whole service life.

Key Features

UL certificate
Long lifespan: 6000+ cycles
1C charge & discharge rate
100% usable energy with 5.12kWh for each module
Works seamlessly with all mainstream inverters
5 year factory warranty

Technical Specifications

Usable Energy	20kWh
Battery Chemistry	LiFePO4 (lithium iron phosphate)
Safety	Integrated DC breaker
Cycle Life	6000+ cycles
Warranty	5 year factory warranty
Certifications	UL 1973, IEC 62619, UN 38.3, CE, and RoHS
OEM/ODM	Custom voltage, capacity, and enclosure available

Full mechanical drawings, dimensions, weight, and discharge curves are available in the downloadable datasheet — contact CMX for the complete specification.

Application Scenarios

This stackable LiFePO4 pack is suited to whole-home backup power, daily solar self-consumption, and off-grid cabins. It pairs with mainstream hybrid and off-grid inverters and scales from a single unit to parallel banks, making it a flexible choice for both first-time installs and capacity upgrades.

Why Choose Shenzhen CMX Battery Co., Ltd.

Shenzhen CMX Battery Co., Ltd. is a 9+ year LiFePO4 battery manufacturer with an annual cell-and-pack capacity of 5.8 GWh and an in-house factory in Tangxia, Dongguan, China. We provide OEM/ODM for voltage, capacity, BMS, and enclosure, and every pack ships with certified cells (UL 1973, IEC 62619, UN 38.3, CE, and RoHS). Our engineering team supports system sizing, standard BMS communication, and global compliance so integrators and distributors can deploy with confidence.

FAQ

Can this battery connect to my existing hybrid inverter?

Yes. CMX LiFePO4 packs communicate over CAN/RS485 and work with mainstream hybrid and off-grid inverters. Share your inverter model and we will confirm the protocol.

How many units can I connect in parallel?

Most residential wall-mounted and rack units support parallel expansion for higher capacity. The exact limit depends on the model — see the datasheet or ask our team.

What does the warranty cover?

CMX provides a 5-year factory warranty on the battery pack; cycle life is rated at 6000+ cycles under standard conditions.

Get a Quote & Datasheet

Need pricing, lead time, or the full specification for the CMX 20kWh Stacked LiFePO4 Battery with Breaker, UL Certified? Our team replies with a quote, OEM/ODM options, and the downloadable datasheet. You can also reach us at sales@cmxbattery.com.

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Support and Delivery

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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 demends.

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.

Is CMX Battery a Lithium Battery manufacturer?

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.

What is the production lead time?

Based on automated production technology, the current product lead time is 15-25 days.

Which battery cells does CMX Battery use?

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.

Which inverters are compatible with CMX Battery 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.

What is the warranty for CMX Battery energy storage batteries?

CMX Battery offers dealer customers a 10-year warranty and technical service for its energy storage battery products.

What is Depth of Discharge (DoD)?

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.

What is State of Charge (SoC)?

SoC reflects the battery's charge level. A SoC of 100% means the battery is full, and 0% means it is empty.

What is C-rate?

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.

What is the cycle life of a CMX Battery Lithium Solar Battery?

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.

What is the difference between kW and kWh?

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.

Where can a home battery be installed?

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.

How long can a 10kWh Powerwall run home appliances during a power outage?

This depends on the load. As a realistic example, a 10kWh battery could run ten 100-watt light bulbs for 12 hours without recharging.

How many home batteries does my house need?

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.

Can I go completely off-grid with solar and batteries?

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.

Is CMX Battery an online store?

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.