Battery Storage comparison

Alpha ESS Smile G3 10.1kWh All-in-One IP65 vs Sunsynk L5.3 5.32kWh IP65

Side-by-side scoring and specs for the twoproducts you’ve picked. Differences and shared traits laid out for an honest verdict.

Alpha ESS Smile G3 10.1kWh All-in-One IP65Sunsynk L5.3 5.32kWh IP65
Smile G3 10.1kWh All-in-One IP65

Alpha ESS Smile G3 10.1kWh All-in-One IP65

£2001.89 ex VAT

8.8
Excellent
L5.3 5.32kWh IP65

Sunsynk L5.3 5.32kWh IP65

£1660.00 ex VAT

8.0
Great

Scores at a glance

Spec-by-spec

CriterionAlpha ESS Smile G3 10.1kWh All-in-One IP65Sunsynk L5.3 5.32kWh IP65
Overall8.8Best overall8.0
Usable Capacity(25%)8.57.5
Round-Trip Efficiency(25%)8.58.5
Inverter Compatibility(20%)9.07.5
Warranty & Cycle Life(20%)8.88.8
Value for Money(10%)9.46.9

Ready to move on this?

Send us your details and the products you’re leaning towards. We’ll come back with a system spec — our MCS-certified team handles installs UK-wide.

Get install quotes for these

Look at each on its own

For the full review, scoring breakdown, and editorial verdict:

More battery storage reading