Side-by-side

Compare

Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.

Market context

Global benchmark

Performance & Value

APX HV S2

Growatt

60/ 100

Good

Strong evidence coverage · 100%

Evidence checked 2026-07-31

LFP100% Usable5 kWh Modular
Full scorecard
Performance & Value

Smile G3 S5

AlphaESS

78/ 100

Superior

Moderate evidence coverage · 58%

Evidence checked 2026-07-16

LFPUL9540AVPP-Ready
Full scorecard
Side by side

Score profile

MeasureAPX HV S2Smile G3 S5
Capacity & Usability92 / 10086 / 100
Power & Efficiency65 / 10080 / 100
Longevity (verified)53 / 10070 / 100
Safety & Chemistry71 / 10087 / 100
Guarantee & Backbone43 / 10078 / 100
Energy Ecosystem44 / 10067 / 100

Capacity & Usability

APX HV S2
92 / 100
Smile G3 S5
86 / 100

Power & Efficiency

APX HV S2
65 / 100
Smile G3 S5
80 / 100

Longevity (verified)

APX HV S2
53 / 100
Smile G3 S5
70 / 100

Safety & Chemistry

APX HV S2
71 / 100
Smile G3 S5
87 / 100

Guarantee & Backbone

APX HV S2
43 / 100
Smile G3 S5
78 / 100

Energy Ecosystem

APX HV S2
44 / 100
Smile G3 S5
67 / 100
Side by side

Key specifications

MeasureAPX HV S2Smile G3 S5
Published usable capacity range5–30 kWh8.2–60.5 kWh
Scored benchmark10 kWh9.6 kWh
ChemistryLFPLFP
Power5.0 kW5 kW
Round-tripNot recorded95 %
Cycle lifeNot recorded10,000 cycles

Published usable capacity range

APX HV S2
5–30 kWh
Smile G3 S5
8.2–60.5 kWh

Scored benchmark

APX HV S2
10 kWh
Smile G3 S5
9.6 kWh

Chemistry

APX HV S2
LFP
Smile G3 S5
LFP

Power

APX HV S2
5.0 kW
Smile G3 S5
5 kW

Round-trip

APX HV S2
Not recorded
Smile G3 S5
95 %

Cycle life

APX HV S2
Not recorded
Smile G3 S5
10,000 cycles
Decision snapshot

Where the comparison separates

OverallSmile G3 S5 leads the global score by 18 points.
Strongest dimensionsAPX HV S2: Capacity & Usability · Smile G3 S5: Safety & Chemistry
Largest differenceSmile G3 S5 has the largest pillar edge in Guarantee & Backbone (35 points).
Evidence coverageAPX HV S2: strong evidence coverage (100%) · Smile G3 S5: moderate evidence coverage (58%)

A score lead is only meaningful inside this shared class or tier. Weigh it against the specification and evidence rows above before deciding.

Both products are scored in the Performance & Value class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.