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Performance & Value

Smile G3 S5

8.2–60.5 kWh · LFP · All-in-one

AlphaESSReleased 2022

78/ 100

Superior

Global

LFPUL9540AVPP-Ready

The verdict. In our Performance & Value class, AlphaESS Smile G3 S5 leads on safety & chemistry. Home-battery reliability is rarely independently verified, so judge on chemistry, safety certification and the backing company.

2ndof 24 in Performance & ValueTop 10%class average 66.7
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A newer generation is available. AlphaESS's current Australian resource-centre datasheet replaces the historical BAT-10.1P configuration with SMILE-G3-BAT-9.3S, while retaining the SMILE-G3-S5/B5 system family. This historical 10.1P record remains available for installed-system comparison but no longer carries the Australian purchase-priority designation. See the Smile G3 S5 BAT-9.3S scorecard. Source. This product’s score is unchanged and it remains in active assessment.

The assessment

How it scores, by category

Capacity & Usability86
Power & Efficiency80
Longevity (verified)70
Safety & Chemistry87
Guarantee & Backbone78
Energy Ecosystem67

Market position

2ndof 24 in Performance & ValueTop 10%
547881

Our reading

Smile G3 S5 scores 78, placing 2 of 24 in the Performance & Value class against a class average of 66.7. Its strongest scoring dimension is safety & chemistry (87), running 11.8 points above the class average on this dimension. Key specifications: LFP, 95% round-trip efficiency, 5 kW continuous output.

The data

Chemistry
LFP
Power
5kW
Round-trip
95%
Cycle life
10,000cycles

Capacity guarantee: minimum retained at year 10

9.6 kWhfull6.7at yr 10
60708090100Rated capacity 100%Guaranteed floor 70.0%70.0%0yr2yr4yr6yr8yr10yr
Rated capacity (reference)Guaranteed floor: 70.0% at yr 10

No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve. Capacity figure based on the sourced usable capacity of the base configuration; modular systems scale with additional modules.

Blackout protection

71 / 100#13 of 32 batteries
fleet low 46median 68fleet high 92
No backupGrid-forming

Whole-home (via hybrid inverter)

Continuous power
5kW
Switchover
<20ms (seamless)
Surge / motor-start
Surge rated
Off-grid solar recharge
Yes, documented
AC terminal protection
Not specified

The blackout score is a standalone benchmark of outage resilience only - it re-weights sourced specs already scored in this product’s pillars (backup tier, switchover, surge strength, backup power, off-grid recharge) and never affects the overall score. Dots show the full battery fleet; the marker is this product.

Before you buy

Two things to check

Local positionUse a market view to check local availability, approvals and warranty scope.

Ask the installer: What usable capacity, backup power and warranted operating conditions will the installed Smile G3 S5 configuration deliver?

Verification & sources

Market context

Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.

Benchmark anchor. Capacity range describes supported configurations; the score remains anchored to the reviewed reference configuration, not the largest stack. Scored model: SMILE-G3-S5 (5 kW hybrid) with SMILE-G3-BAT-10.1P modules (8.2-60.5 kWh usable) · checked 2026-07-16. Evidence.

Sources & references · checked 2026-07-16

Moderate evidence coverage

18 of 31 scored criteria link directly to a published source.

Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not an independent guarantee that a claim is correct.

Help strengthen this record

These are published evidence gaps, not private submissions. A source is reviewed under the same methodology whether it comes from a reader, installer or manufacturer.

View the open evidence register

Evidence timeline

Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.

  1. Core scorecard evidence checked
  2. Series benchmark source checked
  3. AU market evidence checked
  4. Plain-language warranty summary checked

Scored by Solar Analytica Research

Further reading from Signals

Stay across the benchmark.

New scorecards, score changes and market signals, published as they happen.