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Alpha ESS SMILE-G3-S3.6 vs SolaX TP-HS50E

Usable capacity: Alpha ESS SMILE-G3-S3.6 3.8 kWh, SolaX TP-HS50E 4.6 kWh. The Alpha ESS SMILE-G3-S3.6 is better on 3 of 8 comparable points.

Who wins where

  • Alpha ESS SMILE-G3-S3.6
  • SolaX TP-HS50E
PerformanceElectricalWarranty & lifespan
Performance: Alpha ESS SMILE-G3-S3.6 29, SolaX TP-HS50E 22; Electrical: Alpha ESS SMILE-G3-S3.6 50, SolaX TP-HS50E 50; Warranty & lifespan: Alpha ESS SMILE-G3-S3.6 49, SolaX TP-HS50E 49

Biggest differences

FactSMILE-G3-S3.6TP-HS50E
Expandable up to38.4 kWh20.4 kWh
Nominal capacity4 kWh5.1 kWh
Charge power (continuous)3.68 kW3 kW
Discharge power (continuous)3.68 kW3 kW
Usable capacity3.8 kWh4.6 kWh
All specifications ↓

Score per area = position (0–100) relative to all 130 models in this category; higher is better.

Technical specifications Alpha ESSSMILE-G3-S3.6 SolaXTP-HS50E
General
Cell chemistry LFP 1 LFP 2
Wi-Fi / app Yes 1 –
Performance
Usable capacity 3.8 kWh 1 4.6 kWh ✓ 2
Nominal capacity 4 kWh 1 5.1 kWh ✓ 2
Expandable up to 38.4 kWh ✓ 1 20.4 kWh 2
Charge power (continuous) 3.68 kW ✓ 1 3 kW 2
Discharge power (continuous) 3.68 kW ✓ 1 3 kW 2
Peak power – 5.1 kW 2
Efficiency
Depth of discharge 95 % 1 –
Electrical
Coupling DC-coupled 1 –
Backup power Yes 1 Yes 2
Off-grid capable Yes 1 Yes 2
Dimensions & weight
IP rating IP65 1 IP66 2
Min. operating temperature – -30 °C 2
Width – 730 mm 2
Height – 318 mm 2
Depth – 150 mm 2
Weight – 47 kg 2
Warranty & lifespan
Warranted cycles – 6,000 2
Warranty 10 years 1 10 years 2

Sources

  1. Alpha ESS SMILE-G3-S3.6 / S5 / B5 Datasheet, V01.13122024 — Alpha ESS Co., Ltd. · accessed 29 Sept 2026
  2. SolaX X1-IES All-in-one Residential ESS, V1.7 (tekst herkend met OCR) — SolaX Power · accessed 1 Oct 2026