Shipping & delivery30-day returnsWarranty
Check local voltage, plug, installation, and product-certification requirements before ordering. We confirm compatibility and availability for your destination before payment.
Installers who want fast, wire-free battery stacking should look at the SimpliPHI 6.6 from Briggs & Stratton. Each 48V unit provides 6.65 kWh, and RapidStak connectors let a three-battery stack go together in under five minutes.
Planning a system? Read our guide: How to size a battery backup system for your home.
Suited to whole-home or partial-home backup, solar plus storage, time-of-use shifting and off-grid systems, in both residential and commercial settings.
Efficient, Reliable, High-Performance, Easy-to-Install Battery You Can Rely On From Briggs & Stratton The SimpliPHI 6.6 Battery is a compact, fast-install energy storage solution designed for simple, tool-light installation and scalable performance. With RapidStak connectors that eliminate wiring, DIP switches, and extra hardware, installers can complete a three-battery stack in under five minutes. Its outdoor-rated, cabinet-free design, and broad inverter compatibility make it a flexible choice for a wide range of residential and commercial applications. Key Benefits: Wire-Free Setup: No loose wires, DIP switches, or additional hardware, reducing labor time and accessory costs. Scalable Storage: Each unit provides 6.65 kWh and can be stacked up to 3 per column or expanded to 6 stacks for larger multi-battery systems. Indoor/Outdoor Versatility: IP65-rated housing supports cabinet-free ground or wall mounting in all-weather environments. Flexible Inverter Compatibility: Fully compatible with EG4, Briggs & Stratton, and other leading 48V lithium-supporting inverters. Wide Application Use: Supports backup power, time-of-use shifting, solar+storage, and off-grid system designs. Use Cases: Ideal for backup power systems, whole-home or partial-home energy storage, solar+storage applications, and off-grid installations. Its fast setup and flexible mounting options make it suitable for both residential and commercial environments, especially where rapid deployment and cabinet-free installation are priorities. Tech Specs: DC Nominal Voltage: 51.2 VDC Communications: CAN, RS485 Dimensions (H × W × D): 28.5" × 6.7" × 18.9" Weight: 140 lbs Certifications: UL 1642, UL 1973, UL 9540 Ed. 3, UN 3480, DOT 38.3, UL 9540A
Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.
We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.
Ask our team to confirm the SimpliPHI 6.6 works with your inverter before you plan the stack. Message our team on WhatsApp.
ECO-WORTHY
The PowerMega 314 is a floor-mounted 48V LiFePO4 battery with 16.08kWh of storage, with an active balancing BMS and built-in fire suppression. Electricians designing off-grid systems and homeowners building backup storage are its main audience.
$2,079.99
Epoch
Epoch's 12V 460Ah V2-T Elite is a Group 8D LiFePO4 battery for marine, RV, and stationary backup systems, with 5.89kWh of usable energy. A factory-fitted Class T fuse, an internal heater, and Victron CAN-bus communication are built in, which suits cold-climate and Victron-based builds.
$2,079.20
Pytes
This stationary cabinet from Pytes organizes a full energy storage system in one indoor enclosure. It holds up to 12 HV48100 batteries with a BCU (Battery Control Unit) for 61.44kWh, or up to 13 Pytes V5 batteries for 66.56kWh. It suits owners who want room to start small and add batteries later.
$2,040.00
BLUETTI
Built around the BLUETTI AC300 and a B300K battery, this bundle adds three 200W solar units for more daytime charging. It is aimed at households that want to lean on solar during extended outages.
$2,159.20