Compare Solar Panels, Batteries & Inverters Side by Side

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

Market context

Global benchmark

Product AComparable product

Performance & Value

VARTA.wall BM29–18 kWh

VARTA | VARTA.wall 9 / 13.5 / 18 (BM2, LFP); scored reference VARTA.wall 18

LFPDC-coupled

53/ 100

Average

Strong evidence coverage · 100%

Evidence checked 2026-08-16

LFP5 kWh ModularFinancial note

Full scorecard

Performance & Value

Smile G3 S5 / BAT-10.1P9.6–57.6 kWh

AlphaESS | SMILE-G3-S5 with one SMILE-G3-BAT-10.1P; 9.6 kWh usable reference, 1-6 modules

LFPAll-in-oneSingle-phase

67/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-08-01

LFPVPP-Ready

Full scorecard

Side by side

Score profile

Measure	VARTA.wall BM2	Smile G3 S5 / BAT-10.1P
Capacity & Usability	61 / 100	82 / 100
Power & Efficiency	65 / 100	62 / 100
Longevity (verified)	48 / 100	65 / 100
Safety & Chemistry	66 / 100	75 / 100
Guarantee & Backbone	34 / 100	62 / 100
Energy Ecosystem	40 / 100	58 / 100

Capacity & Usability

VARTA.wall BM2: 61 / 100
Smile G3 S5 / BAT-10.1P: 82 / 100

Power & Efficiency

VARTA.wall BM2: 65 / 100
Smile G3 S5 / BAT-10.1P: 62 / 100

Longevity (verified)

VARTA.wall BM2: 48 / 100
Smile G3 S5 / BAT-10.1P: 65 / 100

Safety & Chemistry

VARTA.wall BM2: 66 / 100
Smile G3 S5 / BAT-10.1P: 75 / 100

Guarantee & Backbone

VARTA.wall BM2: 34 / 100
Smile G3 S5 / BAT-10.1P: 62 / 100

Energy Ecosystem

VARTA.wall BM2: 40 / 100
Smile G3 S5 / BAT-10.1P: 58 / 100

Side by side

Key specifications

Show differences only (3 of 7 rows match)

Measure	VARTA.wall BM2	Smile G3 S5 / BAT-10.1P
Architecture	DC-coupled battery	All-in-one energy system
Published usable capacity range	9–18 kWh	9.6–57.6 kWh
Scored benchmark	18 kWh	9.6 kWh
Chemistry	LFP	LFP
Power	9.3 kW	5 kW
Round-trip	Not recorded	Not recorded
Cycle life	Not recorded	Not recorded

Architecture

VARTA.wall BM2: DC-coupled battery
Smile G3 S5 / BAT-10.1P: All-in-one energy system

Published usable capacity range

VARTA.wall BM2: 9–18 kWh
Smile G3 S5 / BAT-10.1P: 9.6–57.6 kWh

Scored benchmark

VARTA.wall BM2: 18 kWh
Smile G3 S5 / BAT-10.1P: 9.6 kWh

Chemistry

VARTA.wall BM2: LFP
Smile G3 S5 / BAT-10.1P: LFP

Power

VARTA.wall BM2: 9.3 kW
Smile G3 S5 / BAT-10.1P: 5 kW

Round-trip

VARTA.wall BM2: Not recorded
Smile G3 S5 / BAT-10.1P: Not recorded

Cycle life

VARTA.wall BM2: Not recorded
Smile G3 S5 / BAT-10.1P: Not recorded

Decision snapshot

Where the comparison separates

OverallSmile G3 S5 / BAT-10.1P leads the global score by 14 points.

Strongest dimensionsVARTA.wall BM2: Safety & Chemistry · Smile G3 S5 / BAT-10.1P: Capacity & Usability

Largest differenceSmile G3 S5 / BAT-10.1P has the largest pillar edge in Guarantee & Backbone (28 points).

Evidence coverageVARTA.wall BM2: strong evidence coverage (100%) · Smile G3 S5 / BAT-10.1P: strong evidence coverage (100%)

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.