Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Price Match Guarantee 💲 Fast & Free Shipping 📦 No Sales Tax 💵 Post Purchase Support 🤝 Free Replacement Parts 🛠️ Dealer Warranty 👷🏼 Extended Warranty!

Skip to content

Simpliphi Battery 6.6kWh, 48 Volt Stackable Lithium Battery

SKU SPHI-B-6.6BA
$4,080.83

Notify me when back in stock

¡También ofrecemos atención al cliente en español!

Find a better price somewhere else?

Well... we will BEAT their price to get you the lowest pricing, we will find and SPEAK with a local installer, AND you get our post-purchase customer support.

  • US Based Authorized DuroMax Dealer

    Full manufacturer warranty included

  • 4-5 Day Free Shipping + No Sales Tax

    More savings on every purchase and ships in 4-5 business day

  • Easy 30-Day Returns & Price Beat Guarantee

    Risk-free shopping + best price guaranteed

  • Post-Purchase Customer Support

    Dedicated help whenever you need it


ESTIMATED DELIVERY BETWEEN

Order within to get it by the earliest date.


The SimpliPHI 6.6 Battery, manufactured by Briggs & Stratton, is a 6.65 kWh, 48-volt lithium ferro phosphate (LFP) energy storage unit known for its quick, wire-free installation. Its stackable, modular design uses "RapidStak" connectors for easy setup, making it suitable for a variety of residential and light commercial applications. 
Key features
  • Modular and scalable: Each battery unit has a usable capacity of 6.65 kWh. You can stack up to three batteries to create a 19.95 kWh bank, and a maximum of six stacks can be networked for a total of 119.7 kWh.
  • RapidStak™ connectors: This proprietary connection system combines all power and communication wiring into a single, wire-free plug, significantly reducing installation time and eliminating the hassle of extra cables and DIP switches.
  • Ultra-safe LFP chemistry: The battery uses lithium ferro phosphate (LFP) chemistry, which offers superior thermal stability and a longer lifespan compared to other lithium chemistries.
  • Outdoor-rated design: With an IP65 rating when stacked, the batteries can be installed outdoors without requiring an additional cabinet. They are also resistant to corrosion.
  • High efficiency and long life: The battery boasts a 96% round-trip efficiency and is rated for 6,000 cycles at an 80% depth of discharge (DoD), which equates to over 15 years of daily use.
  • Inverter compatibility: The  SimpliPHI 6.6  is designed for seamless integration with inverters from manufacturers like SimpliPHI and Sol-Ark, and is compatible with other brands that support 48V batteries via CAN and RS-485 communication.
  • Briggs & Stratton gateway: A  Briggs & Stratton ET-GWY-10 gateway  is required for all systems using the 6.6 kWh stackable batteries to manage over-the-air firmware updates and monitoring. 

Specifications
Specification  Details
Chemistry Lithium Ferro Phosphate (LFP)
Nominal Voltage 51.2 VDC
Usable Capacity 6.65 kWh
Amp-Hours (Ah) 130 Ah
Continuous Power 6.66 kW (130 amps DC) per module
Surge Power Up to 8.3 kW (10-second surge) per module
Depth of Discharge Up to 100% DoD
Cycle Life 6,000+ cycles @ 80% DoD
Efficiency ≥96% round-trip
Operating Temperature -4°F to 131°F (-20°C to 55°C)
Dimensions (Single Module) 28.6" W x 6.7" D x 18.9" H
Weight (Single Module) 140 lbs (63.5 kg)
IP Rating IP65 when stacked
Warranty 10-year limited warranty

Shipping is FREE on all orders to customers within the 48 Contiguous States and the District of Columbia. We do not ship to Alaska, Hawaii, or any outlying islands and territories.

Processing time for orders is 1 business day

Shipping time for orders is 4-5 business days


Want to know more about our Returns Policy? Read more here.

Want to know more about our Shipping Policy? Read more here.

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Krato Power.

  • Family Owned & Operated. Ask for Alex (Owner) at any time!
  • 4-5 Day Free Shipping with free liftgate service to the 48 Contiguous States and the District of Columbia. No extra charges. Ever
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30 Day Easy Returns. Not happy with your product, we'll take it back no questions asked.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286
In Stock and Ready To Ship

All of our items are in stock and ready to ship. All items ship within 1 business day.

Top Customer Service

We have excellent customer service. Questions? Call us at 1-888-855-7286

Hassle Free Returns

30 Day Easy Return Policy

Price BEAT Guarantee

Found a better price? We will BEAT it!

Schedule a Consultation

  • Still interested but want to talk at a diferent time?
  • Schedule a consultation here for later!
Book a Consultation
f
Description
The SimpliPHI 6.6 Battery, manufactured by Briggs & Stratton, is a 6.65 kWh, 48-volt lithium ferro phosphate (LFP) energy storage unit known for its quick, wire-free installation. Its stackable, modular design uses "RapidStak" connectors for easy setup, making it suitable for a variety of residential and light commercial applications. 
Key features
  • Modular and scalable: Each battery unit has a usable capacity of 6.65 kWh. You can stack up to three batteries to create a 19.95 kWh bank, and a maximum of six stacks can be networked for a total of 119.7 kWh.
  • RapidStak™ connectors: This proprietary connection system combines all power and communication wiring into a single, wire-free plug, significantly reducing installation time and eliminating the hassle of extra cables and DIP switches.
  • Ultra-safe LFP chemistry: The battery uses lithium ferro phosphate (LFP) chemistry, which offers superior thermal stability and a longer lifespan compared to other lithium chemistries.
  • Outdoor-rated design: With an IP65 rating when stacked, the batteries can be installed outdoors without requiring an additional cabinet. They are also resistant to corrosion.
  • High efficiency and long life: The battery boasts a 96% round-trip efficiency and is rated for 6,000 cycles at an 80% depth of discharge (DoD), which equates to over 15 years of daily use.
  • Inverter compatibility: The  SimpliPHI 6.6  is designed for seamless integration with inverters from manufacturers like SimpliPHI and Sol-Ark, and is compatible with other brands that support 48V batteries via CAN and RS-485 communication.
  • Briggs & Stratton gateway: A  Briggs & Stratton ET-GWY-10 gateway  is required for all systems using the 6.6 kWh stackable batteries to manage over-the-air firmware updates and monitoring. 

Specifications
Specification  Details
Chemistry Lithium Ferro Phosphate (LFP)
Nominal Voltage 51.2 VDC
Usable Capacity 6.65 kWh
Amp-Hours (Ah) 130 Ah
Continuous Power 6.66 kW (130 amps DC) per module
Surge Power Up to 8.3 kW (10-second surge) per module
Depth of Discharge Up to 100% DoD
Cycle Life 6,000+ cycles @ 80% DoD
Efficiency ≥96% round-trip
Operating Temperature -4°F to 131°F (-20°C to 55°C)
Dimensions (Single Module) 28.6" W x 6.7" D x 18.9" H
Weight (Single Module) 140 lbs (63.5 kg)
IP Rating IP65 when stacked
Warranty 10-year limited warranty
Shipping

Shipping is FREE on all orders to customers within the 48 Contiguous States and the District of Columbia. We do not ship to Alaska, Hawaii, or any outlying islands and territories.

Processing time for orders is 1 business day

Shipping time for orders is 4-5 business days


Want to know more about our Returns Policy? Read more here.

Want to know more about our Shipping Policy? Read more here.

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Krato Power.

  • Family Owned & Operated. Ask for Alex (Owner) at any time!
  • 4-5 Day Free Shipping with free liftgate service to the 48 Contiguous States and the District of Columbia. No extra charges. Ever
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30 Day Easy Returns. Not happy with your product, we'll take it back no questions asked.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286