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High performance storage

Hybrid Solar Inverters

Split-phase 120/240V pure sine wave hybrid inverters with built-in MPPT solar charging. Run your house, shop or RV on solar, batteries and grid — automatically. Every unit is matched to Fleet Lithium LiFePO4 packs so your charge profile, surge headroom and warranty all line up.

  • 120/240V split phase
  • Built-in MPPT solar charger
  • 48V LiFePO4 ready
  • Ships from the USA
Shop hybrid inverters Size my battery bank
120/240V Split phase output
48V / 51V Battery system standard
5,000+ Cycle life on matched packs
Growatt 48v Off-Grid Storage Inverter - SPF 6000T DVM-MPV Growatt, showing the front face with the Fleet Lithium logo and control panel, with a slight angle from the left
48V System standard
  • 10-year battery warranty
  • 5,000+ cycle life
  • 300A continuous discharge
  • US-based support
  • Fast free shipping
1

Pick your inverter

Match continuous wattage to your largest simultaneous load, then add 25% headroom for motor startup surge.

2

Size the battery bank

Use the calculator below to convert daily kWh into the Fleet Lithium 48V pack count you actually need.

3

Buy the pair together

Inverter plus matched lithium bank ships as one system — no charge-profile guesswork, one place to call for support.

The inverter lineup

Engineered for Fleet Lithium battery ecosystems

2 units available

Every inverter is bench-checked against Fleet Lithium charge profiles before it ships. Need a full system spec? Our team will size the inverter, bank and array together.

Complete the system

An inverter is only as good as the battery bank behind it

Hybrid inverters pull hard and cycle daily. Fleet Lithium LiFePO4 packs deliver full usable capacity, 300A continuous discharge and 5,000+ cycles at 80% DoD — lead-acid banks fade in under two years.

Size your battery bank

Recommended bank

—

Estimate based on 80% usable depth of discharge. Contact us for a full off-grid system design.

100% usable capacity

Lead-acid gives you half its rating. A 105Ah Fleet Lithium pack delivers the full bank you paid for.

5,000+ cycles at 80% DoD

Cycle daily for over a decade instead of replacing a lead bank every 18 months.

300A continuous / 800A peak

Handles inverter surge loads — well pumps, compressors, power tools — without sagging.

10-year warranty

Every Promise-series pack is backed for 10 years. Ships from the USA.

Recommended Fleet Lithium solar batteries

Fleet Lithium 48v Off-Grid Solar Inverter / Charger with 48V Battery Bundle, showing the inverter and battery units side-by-side with a mounting bracket. 48v Off-Grid Solar Inverter / Charger with 48V Battery Bundle $3,899.00 View pack Fleet Lithium 48V Stackable Wall Mounted Solar Battery System showing three black battery units stacked, with the Fleet Lithium logo and warning labels visible. 48V Stackable Wall Mounted Solar Battery System $2,299.00 View pack Growatt 48v Off-Grid Storage Inverter - SPF 6000T DVM-MPV Growatt, showing the front face with the Fleet Lithium logo and control panel, with a slight angle from the left 48v Off-Grid Storage Inverter - SPF 6000T DVM-MPV Growatt $1,899.00 View pack Fleet Lithium BlueMax Marine 12V 200Ah LiFePO4 Deep Cycle Battery (Group 27) top-down view showing positive and negative terminals, product labels with "MSDS / UN38.3", "Maintenance Free", "Eco-Friendly", "Bluetooth", "Dual Purpose", "Starting Battery", "Deep Cycle", "1200 Cranking Amps", "12V 105AH", and safety notices. BlueMax Marine 12V 200Ah LiFePO4 Deep Cycle Battery (Group 27) $699.00$629.00 View pack
Shop solar & off-grid batteries
  • 5,000+ cycle life
  • 10-year warranty
  • 300A continuous discharge
  • Ships from the USA

Buyer questions

Hybrid solar inverter FAQ

What size hybrid inverter do I need?
Add up the wattage of everything that can run at the same time, then add roughly 25% for motor startup surge. A 7kW unit covers most cabins, shops and RV systems; step up to 12kW for a full home with well pump, HVAC and electric appliances.
Will this inverter charge Fleet Lithium batteries correctly?
Yes. These hybrid inverters ship with selectable lithium charge profiles for 48V/51V LiFePO4, so bulk and absorb voltages match Fleet Lithium packs without custom programming.
What is split phase 120/240V and do I need it?
Split phase supplies both 120V and 240V from one inverter, so well pumps, dryers, welders and mini-splits run natively. If you have any 240V load, you need split phase.
Can I run this without solar panels?
Yes. Hybrid inverters run as a battery inverter and grid charger today, then accept panels later through the built-in MPPT controller with no equipment change.
How many batteries do I need?
Use the bank calculator on this page: daily kWh divided by 80% usable depth of discharge, converted to amp-hours at 48V. Most off-grid homes land between 15 and 30kWh of lithium.
Do you help design the whole system?
Yes. Send us your loads and location and our team will spec the inverter, battery bank and panel array as one package before you buy.
Talk to a system designer