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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

enblock E15.5

LG Energy Solution

71/ 100

Very good

Limited evidence coverage · 11%

Evidence checked 2026-07-14

LFP15+ Yrs Field-Proven
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

Measureenblock E15.5Smile G3 S5
Capacity & Usability90 / 10086 / 100
Power & Efficiency88 / 10080 / 100
Longevity (verified)49 / 10070 / 100
Safety & Chemistry82 / 10087 / 100
Guarantee & Backbone76 / 10078 / 100
Energy Ecosystem48 / 10067 / 100

Capacity & Usability

enblock E15.5
90 / 100
Smile G3 S5
86 / 100

Power & Efficiency

enblock E15.5
88 / 100
Smile G3 S5
80 / 100

Longevity (verified)

enblock E15.5
49 / 100
Smile G3 S5
70 / 100

Safety & Chemistry

enblock E15.5
82 / 100
Smile G3 S5
87 / 100

Guarantee & Backbone

enblock E15.5
76 / 100
Smile G3 S5
78 / 100

Energy Ecosystem

enblock E15.5
48 / 100
Smile G3 S5
67 / 100
Side by side

Key specifications

Measureenblock E15.5Smile G3 S5
Published usable capacity range15.5 kWh8.2–60.5 kWh
ChemistryLFPLFP
Power7.7 kW5 kW
Round-trip96 %95 %
Cycle lifeNot recorded10,000 cycles
Scored benchmarkNot stated9.6 kWh

Published usable capacity range

enblock E15.5
15.5 kWh
Smile G3 S5
8.2–60.5 kWh

Chemistry

enblock E15.5
LFP
Smile G3 S5
LFP

Power

enblock E15.5
7.7 kW
Smile G3 S5
5 kW

Round-trip

enblock E15.5
96 %
Smile G3 S5
95 %

Cycle life

enblock E15.5
Not recorded
Smile G3 S5
10,000 cycles

Scored benchmark

enblock E15.5
Not stated
Smile G3 S5
9.6 kWh
Decision snapshot

Where the comparison separates

OverallSmile G3 S5 leads the global score by 7 points.
Strongest dimensionsenblock E15.5: Capacity & Usability · Smile G3 S5: Safety & Chemistry
Largest differenceSmile G3 S5 has the largest pillar edge in Longevity (verified) (21 points).
Evidence coverageenblock E15.5: limited evidence coverage (11%) · 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.