Skip to content
Contact Us Price Match Guarantee FAQs Why Buy From Us About Us Customer Reviews Installer Program Build Your System
OutBack Power EnergyCell 5 Battery Kit | 4-Stack 20.48kWh with BMS & Base

OutBack Power EnergyCell 5 Battery Kit | 4-Stack 20.48kWh with BMS & Base
Save 12% Save 12%
$6,778.44
$6,778.44 - $6,778.44
$6,778.44
$5,978.44
$5,978.44 - $5,978.44
$5,978.44
✓ Authorized OutBack Power Dealer
✓ Price Match Guarantee
✓ FAST Shipping: In Stock Ready To Ship
✓ Questions? Talk to a OutBack Power Expert: 1-303-876-7654

Login for Exclusive Member Pricing.
Not a member? Create a Free Account.

Battery Kit | OutBack Power

A 20.48kWh OutBack Stack That Practically Addresses Itself

Four OutBack Power EnergyCell 5 batteries stacked on their dedicated base with the BMS and junction box included: 20.48kWh of LiFePO4 storage with automatic stack identification, active balancing, and an IP65 rating for residential backup and hybrid solar homes.

OutBack Power EnergyCell 5 Battery Kit | 4-Stack 20.48kWh with BMS & Base
20.48kWh Storage
IP65 Rated
LiFePO4 Chemistry
Secure Checkout

Everything in This Kit

Component Qty
OutBack Power EnergyCell 5 Battery (48V) 4
OutBack Power BMS & Junction Box 1
OutBack Power EnergyCell 5 Battery Base 1

Why Buy It as a Kit

Right-Sized Daily Storage

20.48kWh balances capacity and footprint for typical residential backup and hybrid solar use.

Intelligent BMS

The integrated management system actively balances the stack and monitors voltage, current, and temperature.

Automatic Stack Addressing

Batteries identify and address themselves in the stack, which simplifies installation and expansion.

Safety Built In

Stable LiFePO4 chemistry and a built-in fire-extinguishing module, with LED state of charge indicators on every unit.

Kit Specifications

Battery Chemistry LiFePO4
Nominal Voltage 51.2V
Total Capacity 20.48kWh (4 x 5.12kWh)
Continuous Charge / Discharge 5kW
Outdoor Rating IP65
Battery Management Active balancing; voltage, current, and temperature monitoring
Stack Support Automatic identification and addressing
Indicators LED state of charge lights

Documentation & Downloads

EnergyCell 5 Stack Spec Sheet (PDF)

Genuine Equipment

Every component is genuine, with full manufacturer warranties.

Kit Support

Our team helps with sizing and setup questions before and after you buy.

Secure Ordering

Order online with confidence, with real people behind every shipment.

Frequently Asked Questions

Does this kit include an inverter?
No inverter is included in the base kit. You get the four-battery stack, the BMS and junction box, and the battery base.
Can the stack be installed outdoors?
The EnergyCell 5 carries an IP65 rating, and the stack is shown installed outdoors on a concrete pad. Follow the manual for your site conditions.
Can I expand the stack later?
Yes. The system supports automatic identification and addressing for multiple batteries, so added units register in the stack without manual addressing.
Is this genuine brand name equipment?
Yes. Every component is genuine manufacturer equipment with its full factory warranty, sourced through authorized distribution.
Do you offer price matching?
Yes. If you find the same item advertised for less by another authorized dealer, reach out to us and we will do our best to match it.
Renewable Outdoors LLC BBB Business Review