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SimpliPHI 6.6kWh 48V Stackable Lithium Battery – 52015

SimpliPHI 6.6kWh 48V Stackable Lithium Battery – 52015

SimpliPHI 6.6kWh 48V Stackable Lithium Battery

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SKU PES-ESS-BTS-0280

SimpliPHI 6.6kWh 48V Stackable Lithium Battery – 52015

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

$4,174.30 USD

$ $4,174.30 USD

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In Stock

Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

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Specifications

Voltage 48V

Capacity 6.6kWh

Product Category Battery

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

SimpliPHI 6.6kWh 48V Stackable Lithium Battery – 52015

The SimpliPHI 6.6kWh 48V Stackable Lithium Battery (model 52015) delivers safe, efficient, and high-performance energy storage for residential, commercial, and off-grid systems. Designed using advanced Lithium Iron Phosphate (LiFePO₄) chemistry, it provides dependable power with long cycle life and zero cobalt for enhanced sustainability.

Product Features

High Energy Density & Compact Design

The SimpliPHI 6.6kWh 48V Battery offers a compact footprint with a stackable modular form factor, making it ideal for scalable energy systems ranging from 6.6kWh to over 79kWh.

Safe LiFePO₄ Chemistry

Built with Lithium Iron Phosphate cells for exceptional safety, thermal stability, and non-toxic operation—ideal for homes, businesses, and critical infrastructure.

Plug-and-Play Stackable Architecture

Integrates easily with SimpliPHI’s Energy Storage System (ESS) components or third-party hybrid inverters, allowing easy expansion and flexible installation indoors or outdoors.

High Efficiency & Fast Response

Delivers over 96% round-trip efficiency with instantaneous response for backup and off-grid performance, ensuring optimal use of solar generation and stored energy.

Extended Lifecycle Performance

Rated for 10,000+ cycles at 80% depth of discharge (DoD), offering over 15 years of daily use without degradation in output capacity.

How It Works

The SimpliPHI 6.6kWh 48V Stackable Lithium Battery stores DC energy from solar panels or grid charging and converts it through an inverter for AC power delivery. Its intelligent BMS (Battery Management System) balances voltage, temperature, and charge cycles to ensure maximum performance and safety.

Specifications

Model	52015
Battery Type	Lithium Iron Phosphate (LiFePO₄)
Nominal Capacity	6.65 kWh
Nominal Voltage	48 V DC
Usable Energy	≈ 6.3 kWh (95% DoD)
Round Trip Efficiency	> 96%
Cycle Life	≥ 10,000 cycles @ 80% DoD
Battery Management	Integrated BMS with CAN/RS485 Communication
Parallel Expansion	Up to 12 Units (79.2 kWh)
Continuous Discharge Power	120 A (5.7 kW)
Peak Discharge Power (5s)	200 A (9.6 kW)
Charging Temperature	32°F to 113°F (0°C to 45°C)
Discharging Temperature	-4°F to 131°F (-20°C to 55°C)
Enclosure Rating	IP65 (Indoor/Outdoor Rated)
Cooling	Natural Convection
Certifications	UL 1973, UL 9540A, UN38.3
Warranty	10 Years (Manufacturer Limited)
Manufacturer	SimpliPHI Power (by Briggs & Stratton)

Specifications verified from official SimpliPHI Datasheet and User Manual.

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

SimpliPHI 6.6kWh 48V Stackable Lithium Battery – 52015

Product Features

High Energy Density & Compact Design

The SimpliPHI 6.6kWh 48V Battery offers a compact footprint with a stackable modular form factor, making it ideal for scalable energy systems ranging from 6.6kWh to over 79kWh.

Safe LiFePO₄ Chemistry

Built with Lithium Iron Phosphate cells for exceptional safety, thermal stability, and non-toxic operation—ideal for homes, businesses, and critical infrastructure.

Plug-and-Play Stackable Architecture

Integrates easily with SimpliPHI’s Energy Storage System (ESS) components or third-party hybrid inverters, allowing easy expansion and flexible installation indoors or outdoors.

High Efficiency & Fast Response

Delivers over 96% round-trip efficiency with instantaneous response for backup and off-grid performance, ensuring optimal use of solar generation and stored energy.

Extended Lifecycle Performance

Rated for 10,000+ cycles at 80% depth of discharge (DoD), offering over 15 years of daily use without degradation in output capacity.

How It Works

Specifications

Model	52015
Battery Type	Lithium Iron Phosphate (LiFePO₄)
Nominal Capacity	6.65 kWh
Nominal Voltage	48 V DC
Usable Energy	≈ 6.3 kWh (95% DoD)
Round Trip Efficiency	> 96%
Cycle Life	≥ 10,000 cycles @ 80% DoD
Battery Management	Integrated BMS with CAN/RS485 Communication
Parallel Expansion	Up to 12 Units (79.2 kWh)
Continuous Discharge Power	120 A (5.7 kW)
Peak Discharge Power (5s)	200 A (9.6 kW)
Charging Temperature	32°F to 113°F (0°C to 45°C)
Discharging Temperature	-4°F to 131°F (-20°C to 55°C)
Enclosure Rating	IP65 (Indoor/Outdoor Rated)
Cooling	Natural Convection
Certifications	UL 1973, UL 9540A, UN38.3
Warranty	10 Years (Manufacturer Limited)
Manufacturer	SimpliPHI Power (by Briggs & Stratton)

Specifications verified from official SimpliPHI Datasheet and User Manual.

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

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Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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