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Home batteries, by energy, power, and efficiency

Compare makers’ stated usable and nominal energy with continuous power, and nominal energy with round-trip efficiency. Labels name the largest figure on each axis.

Round-trip efficiency is the share of charging energy returned when the battery discharges.

Compare batteries side by side

Usable energy and continuous power 22 batteries. Across: Usable energy (kWh). Up: Continuous power (kW, AC/DC as stated). Qcells Q.HOME CORE G3 A7.6B13.1 (2 cabinets) 24.92 kWh, 15.2 kW AC
Nominal energy and continuous power 30 batteries. Across: Nominal energy (kWh). Up: Continuous power (kW, AC/DC as stated). EG4 PowerPro ESS 18kPV + 3x WallMount All Weather (PP-16/280A3-18K1-AWLL) 42.9 kWhQcells Q.HOME CORE G3 A7.6B13.1 (2 cabinets) 15.2 kW AC
Nominal energy and round-trip efficiency 21 batteries. Across: Nominal energy (kWh). Up: Round-trip efficiency (%). Savant Power Storage 20 20 kWhFortress Power eVault Max 18.5 98%

Usable energy and continuous power

BatteryUsable energy (kWh)Continuous power (kW, AC/DC as stated)
Discover HELIOS ESS 52-48-16000 16.08 kWh10.24 kW DC
EcoFlow PowerOcean Single-phase 4.8 kWh3.3 kW
EG4 WallMount 314Ah All Weather (16 kWh) 12.86 kWh10.2 kW DC
EG4 WallMount 314Ah Indoor (16 kWh) 12.86 kWh10.2 kW DC
Enphase IQ Battery 10C 10 kWh7.08 kW AC
FranklinWH aPower 2 15 kWh10 kW AC
FranklinWH aPower X, 13.6 kWh 13.6 kWh5 kW
Generac PWRcell (gen 1) M3 (9 kWh, DCB modules) 9 kWh3.4 kW AC
Generac PWRcell (gen 1) M4 (12 kWh, DCB modules) 12 kWh4.5 kW AC
Generac PWRcell (gen 1) M5 (15 kWh, DCB modules) 15 kWh5.6 kW AC
Generac PWRcell (gen 1) M6 (18 kWh, DCB modules) 18 kWh6.7 kW AC
Generac PWRcell 12 (gen 1, 2.85 kWh modules) 11.4 kWh4.5 kW
Generac PWRcell 15 (gen 1, 2.85 kWh modules) 14.3 kWh5.6 kW
Generac PWRcell 17 (gen 1, 2.85 kWh modules) 17.1 kWh6.7 kW
Generac PWRcell 9 (gen 1, 2.85 kWh modules) 8.6 kWh3.4 kW
Generac PWRcell 2 M3 9 kWh5.2 kW
Generac PWRcell 2 M4 12 kWh7 kW
Generac PWRcell 2 M5 15 kWh8.7 kW
Generac PWRcell 2 M6 18 kWh10.5 kW
GoodWe Lynx Home U G3 (LXU 5.0-30) 5 kWh4.95 kW
LG Energy Solution RESU10H Prime 9.6 kWh5 kW DC
LG Energy Solution RESU16H Prime 16 kWh7 kW DC
PointGuard Energy PG BatteryPack 8.0 7.8 kWh4.35 kW
PowerPlus Energy LiFe Premium LiFe4838P 3.8 kWh3.22 kW
Qcells Q.HOME CORE G3 A7.6B13.1 (1 cabinet) 12.46 kWh7.6 kW AC
Qcells Q.HOME CORE G3 A7.6B13.1 (2 cabinets) 24.92 kWh15.2 kW AC
Qcells Q.SAVE 10 kWh 9 kWh5.5 kW DC
Qcells Q.SAVE 15 kWh 13.5 kWh8.3 kW DC
Qcells Q.SAVE 20 kWh 18 kWh11.1 kW DC
Sigenergy SigenStor BAT 5.0 Recall: ACCC Nov 19, 20255.2 kWh2.5 kW
SolarEdge Home Battery 400V, Energy Bank BAT-10K1PS0B-01 9.7 kWh5 kW DC
SolarEdge Home Battery 400V UBAT-10K1PS0B-03 9.7 kWh5 kW DC
SolarEdge Nexis Battery System (North America), 1 Battery Block 4.65 kWh3.5 kW DC
SolarEdge Nexis Battery System (North America), 2 Battery Blocks 9.3 kWh7 kW DC
SolarEdge Nexis Battery System (North America), 3 Battery Blocks 13.95 kWh10.5 kW DC
SolarEdge Nexis Battery System (North America), 4 Battery Blocks 18.6 kWh13 kW DC
sonnen sonnenBatterie 10/11 10 kWh4.6 kW
SunPower SunVault 13 12 kWh6.8 kW
SunPower SunVault 26 24 kWh6.8 kW
Tesla Powerwall 2 Recalls: CPSC Nov 13, 2025 and ACCC Sep 16, 202513.5 kWh5 kW AC
Tigo EI Battery TSB-10-US (10 kWh) 9 kWh5 kW

Of 92 batteries, 70 have no maker-stated pair of these figures on this site. No battery states a range of sizes.

Nominal energy and continuous power

BatteryNominal energy (kWh)Continuous power (kW, AC/DC as stated)
Anker SOLIX E10 (A17E1 power module + B6000 battery) 6.144 kWh7.68 kW
Anker SOLIX X1 5 kWh6 kW
EcoFlow PowerOcean Single-phase 5.1 kWh3.3 kW
EG4 LifePower4 48V V2 100Ah 5.12 kWh5.12 kW DC
EG4 PowerPro ESS 18kPV + 1x WallMount All Weather (PP-16/280A1-18K1-AWLL) 14.3 kWh10.2 kW AC
EG4 PowerPro ESS 18kPV + 2x WallMount All Weather (PP-16/280A2-18K1-AWLL) 28.6 kWh12 kW AC
EG4 PowerPro ESS 18kPV + 3x WallMount All Weather (PP-16/280A3-18K1-AWLL) 42.9 kWh12 kW AC
EG4 WallMount 314Ah All Weather (16 kWh) 16 kWh10.2 kW DC
EG4 WallMount 314Ah Indoor (16 kWh) 16 kWh10.2 kW DC
Enphase IQ Battery 10C 10 kWh7.08 kW AC
EP Cube Hybrid NA510G 9.9 kWh5 kW AC
EP Cube Hybrid NA720G 19.9 kWh7.6 kW AC
Fortress Power eFlex 5.4 (legacy) 5.374 kWh3 kW DC
Fortress Power eFlex MAX 5.4 5.376 kWh3 kW DC
Fortress Power eVault Max 18.5 18.43 kWh9.2 kW DC
GoodWe Lynx Home U G3 (LXU 5.0-30) 5.12 kWh4.95 kW
Lion Energy Sanctuary 3 14.3 kWh12 kW AC
Lithion HomeGrid Stack'd PF5-LFP19200 (4 modules) 19.2 kWh14.4 kW DC
Lithion HomeGrid Stack'd PF5-LFP38400 (8 modules) 38.4 kWh14.4 kW DC
Meter MeterHome 10 kW / 14.3 kWh 14.3 kWh10 kW AC
NeoVolta NV14 14.4 kWh7.68 kW AC
PointGuard Energy PG BatteryPack 8.0 8.06 kWh4.35 kW
PointGuard PGHome-11.4-13.44 13.44 kWh7.2 kW
PowerPlus Energy LiFe Premium LiFe4838P 3.8 kWh3.22 kW
Qcells Q.HOME CORE G3 A7.6B13.1 (1 cabinet) 13.12 kWh7.6 kW AC
Qcells Q.HOME CORE G3 A7.6B13.1 (2 cabinets) 26.24 kWh15.2 kW AC
Qcells Q.SAVE 10 kWh 10 kWh5.5 kW DC
Qcells Q.SAVE 15 kWh 15 kWh8.3 kW DC
Qcells Q.SAVE 20 kWh 20 kWh11.1 kW DC
Savant Power Storage 20 20 kWh12.5 kW
Schneider Boost (BAT10K1) 10.56 kWh7.68 kW
Sigenergy SigenStor BAT 5.0 Recall: ACCC Nov 19, 20255.38 kWh2.5 kW
SimpliPHI PHI 3.8 (48V) 3.8 kWh1.92 kW DC
SimpliPHI 4.9 4.9 kWh2.5 kW DC
SimpliPHI 6.6 6.65 kWh6.66 kW
SimpliPHI SPHI-19.8-LO (3 x 6.6 stack) 19.95 kWh13.98 kW
SolarEdge Nexis Battery System (North America), 1 Battery Block 4.9 kWh3.5 kW DC
SolarEdge Nexis Battery System (North America), 2 Battery Blocks 9.8 kWh7 kW DC
SolarEdge Nexis Battery System (North America), 3 Battery Blocks 14.7 kWh10.5 kW DC
SolarEdge Nexis Battery System (North America), 4 Battery Blocks 19.6 kWh13 kW DC
sonnen sonnenBatterie 10/11 11 kWh4.6 kW
SunPower SunVault 13 13 kWh6.8 kW
SunPower SunVault 26 26 kWh6.8 kW
Tesla Powerwall 2 Recalls: CPSC Nov 13, 2025 and ACCC Sep 16, 202514 kWh5 kW AC
Tigo EI Battery TSB-10-US (10 kWh) 9.9 kWh5 kW
Tigo EI Battery TSB-20-US (20 kWh, 2 x TSB-10) 19.8 kWh10 kW

Of 92 batteries, 61 have no maker-stated pair of these figures on this site and 1 states a range of sizes, not one figure: Tesla Powerwall 3.

Nominal energy and round-trip efficiency

BatteryNominal energy (kWh)Round-trip efficiency (%)
Anker SOLIX X1 5 kWh90.2%
EG4 WallMount 314Ah All Weather (16 kWh) 16 kWh95%
EG4 WallMount 314Ah Indoor (16 kWh) 16 kWh95%
Enphase IQ Battery 10 (ENCHARGE-10-1P-NA) 10.5 kWh89%
Enphase IQ Battery 10C 10 kWh90%
Enphase IQ Battery 10T (ENCHARGE-10T-1P-NA) 10.5 kWh89%
Enphase IQ Battery 3 (ENCHARGE-3-1P-NA) 3.5 kWh89%
Enphase IQ Battery 3T (ENCHARGE-3T-1P-NA) 3.5 kWh89%
Enphase IQ Battery 5P 5 kWh90%
Fortress Power eVault Max 18.5 18.43 kWh98%
Fox ESS EP11 10.36 kWh95%
GoodWe Lynx Home U G3 (LXU 5.0-30) 5.12 kWh96%
LG Electronics ESS Home 8 15.8 kWh90%
Lion Energy Sanctuary 3 14.3 kWh89%
PowerPlus Energy ECOSERIES Eco4847P 4.7 kWh96%
PowerPlus Energy LiFe Premium LiFe4838P 3.8 kWh96%
Savant Power Storage 20 20 kWh93.8%
Schneider Boost (BAT10K1) 10.56 kWh96%
SimpliPHI PHI 3.8 (48V) 3.8 kWh98%
SimpliPHI 4.9 4.9 kWh96%
Tesla Powerwall 2 Recalls: CPSC Nov 13, 2025 and ACCC Sep 16, 202514 kWh90%
Tesla Powerwall+ 13.5 kWh90%

Of 92 batteries, 71 have no maker-stated pair of these figures on this site. No battery states a range of sizes.

Limits

The figures are the makers’ statements. Batteries without a single pair of figures are left off each chart.

How these figures are compared