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

Market context

Global benchmark

Performance & Value

Battery-Box Premium HVS

BYD

75/ 100

Superior

Strong evidence coverage · 62%

Evidence checked 2026-06-16

LFP100% UsableHigh Power 10kW+VPP-Ready
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

MeasureBattery-Box Premium HVSSmile G3 S5
Capacity & Usability92 / 10086 / 100
Power & Efficiency91 / 10080 / 100
Longevity (verified)59 / 10070 / 100
Safety & Chemistry73 / 10087 / 100
Guarantee & Backbone92 / 10078 / 100
Energy Ecosystem57 / 10067 / 100

Capacity & Usability

Battery-Box Premium HVS
92 / 100
Smile G3 S5
86 / 100

Power & Efficiency

Battery-Box Premium HVS
91 / 100
Smile G3 S5
80 / 100

Longevity (verified)

Battery-Box Premium HVS
59 / 100
Smile G3 S5
70 / 100

Safety & Chemistry

Battery-Box Premium HVS
73 / 100
Smile G3 S5
87 / 100

Guarantee & Backbone

Battery-Box Premium HVS
92 / 100
Smile G3 S5
78 / 100

Energy Ecosystem

Battery-Box Premium HVS
57 / 100
Smile G3 S5
67 / 100
Side by side

Key specifications

MeasureBattery-Box Premium HVSSmile G3 S5
Published usable capacity range5.12–12.8 kWh8.2–60.5 kWh
Scored benchmark10.24 kWh9.6 kWh
ChemistryLFPLFP
Power10.2 kW5 kW
Round-trip96 %95 %
Cycle lifeNot recorded10,000 cycles

Published usable capacity range

Battery-Box Premium HVS
5.12–12.8 kWh
Smile G3 S5
8.2–60.5 kWh

Scored benchmark

Battery-Box Premium HVS
10.24 kWh
Smile G3 S5
9.6 kWh

Chemistry

Battery-Box Premium HVS
LFP
Smile G3 S5
LFP

Power

Battery-Box Premium HVS
10.2 kW
Smile G3 S5
5 kW

Round-trip

Battery-Box Premium HVS
96 %
Smile G3 S5
95 %

Cycle life

Battery-Box Premium HVS
Not recorded
Smile G3 S5
10,000 cycles
Decision snapshot

Where the comparison separates

OverallSmile G3 S5 leads the global score by 3 points.
Strongest dimensionsBattery-Box Premium HVS: Capacity & Usability · Smile G3 S5: Safety & Chemistry
Largest differenceSmile G3 S5 has the largest pillar edge in Safety & Chemistry (14 points).
Evidence coverageBattery-Box Premium HVS: strong evidence coverage (62%) · 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.