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8 Compatible Batteries · Updated 2026
Best Battery for Fronius SnapINverter Inverter
The Fronius SnapINverter is a string inverter — AC-coupled batteries only.
Quick Answer
The best battery for a Fronius SnapINverter is the Sigenergy SigenStor SP 16kWh
15.6 kWh usable, 5 kW continuous, LFP chemistry, 10-year warranty. AC-coupled with its own built-in inverter — works alongside your existing Fronius without replacing anything.
What Batteries Work with a Fronius SnapINverter?
The Fronius SnapINverter is a string inverter with no DC battery port. You need an AC-coupled battery — one with its own built-in battery inverter that connects at the switchboard independently.
The Fronius SnapINverter is an older string inverter with no battery port. Adding storage requires an AC-coupled battery with its own built-in inverter, or replacing the SnapINverter entirely with a hybrid unit like the Fronius GEN24.
The other option is replacing your Fronius SnapINverter with a modern hybrid inverter (Sungrow, Fronius GEN24, GoodWe), which opens up DC-coupled batteries with better efficiency. Worth considering if your inverter is nearing end of warranty.
Top Picks for Fronius SnapINverter
Sigenergy
SigenStor SP 16kWh
$7,700
Capacity: 15.6 kWh
Power: 5 kW continuous
Warranty: 10 years
FranklinWH
aPower
$7,500
Capacity: 13.6 kWh
Cost per kWh: $551/kWh
Warranty: 10 years
Tesla
Powerwall 3
$9,000
Backup: 11.5 kW continuous
Capacity: 13.5 kWh
Peak: 22 kW
All Compatible Batteries
Prices are battery supply only — installation adds $2,000–$4,000.
| Battery | Price | Capacity | $ per kWh | Power | Chemistry | Coupling | Backup | Warranty |
|---|---|---|---|---|---|---|---|---|
| SigenergySigenStor SP 16kWh Top Pick | $7,700 | 15.6 kWh | $494/kWh | 5 kW | LFP | DC + AC | ✓ | 10 yr |
| FranklinWHaPower | $7,500 | 13.6 kWh | $551/kWh | 5 kW | LFP | DC + AC | ✓ | 10 yr |
| iStoreBattery 15kWh | $8,500 | 15 kWh | $567/kWh | 5 kW | LFP | AC | ✓ | 10 yr |
| NeovoltNV-10 10kWh | $6,500 | 10 kWh | $650/kWh | 5 kW | LFP | AC | ✓ | 10 yr |
| TeslaPowerwall 3 | $9,000 | 13.5 kWh | $667/kWh | 11.5 kW | LFP | DC + AC | ✓ | 10 yr |
| AlphaESSSMILE-B3 11.6kWh | $8,000 | 11.6 kWh | $690/kWh | 6 kW | LFP | AC | ✓ | 10 yr |
| sonnensonnenbatterie eco 10 | $13,000 | 10 kWh | $1300/kWh | 3.3 kW | LFP | AC | ✓ | 15 yr |
| EnphaseIQ Battery 5P | $8,200 | 5 kWh | $1640/kWh | 3.84 kW | LFP | AC | ✓ | 15 yr |
Adding a Battery to Your Fronius SnapINverter System
Rebates and Incentives
Australian state governments offer battery rebates of $2,000–$4,000. Victoria's Solar Homes Battery Rebate ($2,950), Queensland's Battery Booster ($3,000–$4,000), and ACT's Sustainable Household Scheme all reduce the upfront cost.
VPP Compatibility
Your Fronius SnapINverter is VPP-ready. Virtual Power Plants pay $200–600 per year for allowing the grid to draw stored energy during peak demand. See our best VPP plans guide.
Installation Costs
Battery installation typically costs $1,000–$3,000 on top of the battery price. A AC-coupled battery with a Fronius SnapINverter is straightforward for experienced solar electricians. Get at least two quotes.
Fronius SnapINverter Battery FAQ
Can I add a battery to my Fronius SnapINverter inverter?
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Do I need a new inverter to add a battery?
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What size battery should I get with a Fronius SnapINverter?
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Is a battery worth it with Fronius SnapINverter in 2026?
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