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No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦

No Sales Tax 💵 Beat-Anyone Price Match 💲 Free Parts for Life 🛠️ Free Shipping on Most Items 📦
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Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery shown in close-up focusing on the red terminal and on-off switch

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery

SKU PHI-3.8-48-M
by Simpliphi
Sold out
$3,448.99
$2,998.97

Special order item: ships in 1 to 2 months. Not covered by our usual 4 to 5 day delivery.

No sales tax: save about $225 vs. the 7.5% U.S. average sales tax rate. Why?
Indiana orders are taxed. DE, MT, NH and OR have no state sales tax.
Availability: Translation missing: en.general.icons.icon_check_circle icon Out of stock

✅ FREE REPLACEMENT PARTS FOR LIFE ⚙️

Find a better price somewhere else?

Well... we will BEAT it. Call us today to get the best price in the market!

Call/Text Us: 1-888-855-7286
Live Chat With an Expert

  • US Based Authorized Simpliphi Dealer

    Full manufacturer warranty included

  • 4-5 Day Freight Delivery + No Sales Tax

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

  • 30-Day Returns & Price Beat Guarantee

    Simple returns + 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.


Simpliphi PHI Energy Battery Clean Power Designed for Everyday Spaces

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery is a compact and reliable energy storage solution designed for indoor residential and light commercial use. It features a 48-volt lithium iron phosphate design, long cycle life, maintenance-free operation, and a wall-mountable enclosure that saves space while delivering consistent backup and off-grid power. Choose the Simpliphi PHI-3.8-48-M Battery to bring dependable and clean power into your home. Add it to your energy system today and enjoy peace of mind with reliable indoor energy storage.

Features

  • High energy density in a compact, space-saving design
  • Long cycle life with durable lithium iron phosphate chemistry
  • Rapid charge and discharge for reliable power delivery
  • Advanced safety protections with integrated battery management system
  • Scalable design for expanding energy storage needs
  • Maintenance-free operation with no watering or equalization
  • Compatible with residential, commercial, and backup power systems
  • Quiet, efficient performance ideal for indoor installations

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery shown from the front with red and black power terminals and a power switch

Specifications

  • Nominal Voltage: 51.2 V DC
  • Voltage Range: 48 to 56 V DC
  • Capacity: 75 amp-hours
  • Energy Capacity: 3.8 kWh usable at 100% depth of discharge and 3.04 kWh at 80% depth of discharge
  • Max Surge Discharge 10 minutes: 80 A DC or 4.1 kW
  • Max Continuous Discharge: 37.5 A DC or 1.92 kW
  • Max Continuous Charge: 37.5 A DC or 1.92 kW
  • Depth of Discharge: up to 100%
  • Operating Efficiency: 98%
  • Self-Discharge: less than 1% per month
  • Charging Temperature: 0 to 49°C (32 to 120°F )
  • Operating Temperature: -20 to 60°C (-4 to 140°F)
  • Storage Temperature up to 6 months: -10 to 25°C (14 to 77°F)
  • Storage Temperature up to 3 months: -20 to 45°C (-4 to 113°F)
  • Cycle Life: over 10,000 cycles at 80% depth of discharge
  • Memory Effect: none
  • Weight: 86 lb (39 kg)
  • Dimensions: 13.5 × 14 × 8 inches (34.3 × 35.6 × 20.3 cm)
  • Enclosure Volume: 0.88 cubic feet or 0.025 cubic meters
  • Warranty: 10 years

Product Documents

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery shown at an angle on a black mounting bracket with top connectors visible

Shipping is FREE on most items 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.

Heavy items ship by LTL freight with free liftgate service. Freight is FREE to IN, OH, PA, MI, IL, KY, WV, WI, IA, MO, TN, DE, MD, NJ, NY, VA, DC, CT, MA and VT. Everywhere else in the lower 48, freight is FREE on orders of $4,000 or more. Below $4,000, one flat freight rate covers the whole order: $149 when your freight items weigh under 150 lb in total (most inverters and single batteries) or $299 at 150 lb and up (wall-mount batteries, cabinets, refrigerators). Commercial battery systems over 1,000 lb: email support@kratopower.com with your ZIP for a freight price. Your shipping cost always shows at checkout before you pay.

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 on most items to the 48 Contiguous States and the District of Columbia. Freight items include free liftgate service and ship free to 19 states + DC and on orders of $4,000+; elsewhere freight is a flat $149 or $299, shown at checkout before you pay.
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30-Day Returns. Start a return within 30 days of delivery. See our return policy for details.
  • 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

30-Day 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
Call to Order: +1 888 855 7286
Description

Simpliphi PHI Energy Battery Clean Power Designed for Everyday Spaces

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery is a compact and reliable energy storage solution designed for indoor residential and light commercial use. It features a 48-volt lithium iron phosphate design, long cycle life, maintenance-free operation, and a wall-mountable enclosure that saves space while delivering consistent backup and off-grid power. Choose the Simpliphi PHI-3.8-48-M Battery to bring dependable and clean power into your home. Add it to your energy system today and enjoy peace of mind with reliable indoor energy storage.

Features

  • High energy density in a compact, space-saving design
  • Long cycle life with durable lithium iron phosphate chemistry
  • Rapid charge and discharge for reliable power delivery
  • Advanced safety protections with integrated battery management system
  • Scalable design for expanding energy storage needs
  • Maintenance-free operation with no watering or equalization
  • Compatible with residential, commercial, and backup power systems
  • Quiet, efficient performance ideal for indoor installations

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery shown from the front with red and black power terminals and a power switch

Specifications

  • Nominal Voltage: 51.2 V DC
  • Voltage Range: 48 to 56 V DC
  • Capacity: 75 amp-hours
  • Energy Capacity: 3.8 kWh usable at 100% depth of discharge and 3.04 kWh at 80% depth of discharge
  • Max Surge Discharge 10 minutes: 80 A DC or 4.1 kW
  • Max Continuous Discharge: 37.5 A DC or 1.92 kW
  • Max Continuous Charge: 37.5 A DC or 1.92 kW
  • Depth of Discharge: up to 100%
  • Operating Efficiency: 98%
  • Self-Discharge: less than 1% per month
  • Charging Temperature: 0 to 49°C (32 to 120°F )
  • Operating Temperature: -20 to 60°C (-4 to 140°F)
  • Storage Temperature up to 6 months: -10 to 25°C (14 to 77°F)
  • Storage Temperature up to 3 months: -20 to 45°C (-4 to 113°F)
  • Cycle Life: over 10,000 cycles at 80% depth of discharge
  • Memory Effect: none
  • Weight: 86 lb (39 kg)
  • Dimensions: 13.5 × 14 × 8 inches (34.3 × 35.6 × 20.3 cm)
  • Enclosure Volume: 0.88 cubic feet or 0.025 cubic meters
  • Warranty: 10 years

Product Documents

Simpliphi by Briggs & Stratton PHI-3.8-48-M 48 Volt 3.8kWh Lithium Battery shown at an angle on a black mounting bracket with top connectors visible

Shipping

Shipping is FREE on most items 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.

Heavy items ship by LTL freight with free liftgate service. Freight is FREE to IN, OH, PA, MI, IL, KY, WV, WI, IA, MO, TN, DE, MD, NJ, NY, VA, DC, CT, MA and VT. Everywhere else in the lower 48, freight is FREE on orders of $4,000 or more. Below $4,000, one flat freight rate covers the whole order: $149 when your freight items weigh under 150 lb in total (most inverters and single batteries) or $299 at 150 lb and up (wall-mount batteries, cabinets, refrigerators). Commercial battery systems over 1,000 lb: email support@kratopower.com with your ZIP for a freight price. Your shipping cost always shows at checkout before you pay.

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 on most items to the 48 Contiguous States and the District of Columbia. Freight items include free liftgate service and ship free to 19 states + DC and on orders of $4,000+; elsewhere freight is a flat $149 or $299, shown at checkout before you pay.
  • NO Sales Tax except for IN
  • Secured Purchase. All Customer data is secured with SSL Encryption
  • 30-Day Returns. Start a return within 30 days of delivery. See our return policy for details.
  • Exceptional Customer Service. Check out our About Us page.
  • Call or Text Us - We are really here! (In the USA). 1-888-855-7286