SolaX T-BAT H 5.8 V3 vs VARTA element backup 6
Usable capacity: SolaX T-BAT H 5.8 V3 5.5 kWh, VARTA element backup 6 5.9 kWh. The SolaX T-BAT H 5.8 V3 is better on 5 of 8 comparable points.
Who wins where
- SolaX T-BAT H 5.8 V3
- VARTA element backup 6
Biggest differences
| Fact | T-BAT H 5.8 V3 | element backup 6 |
|---|---|---|
| Min. operating temperature | -30 °C | 5 °C |
| Weight | 61.5 kg | 115 kg |
| Discharge power (continuous) | 2.9 kW | 1.8 kW |
| Warranted cycles | 6,000 | 4,000 |
| Charge power (continuous) | 2.9 kW | 2.2 kW |
| Nominal capacity | 5.8 kWh | 6.5 kWh |
Score per area = position (0–100) relative to all 130 models in this category; higher is better.
| Technical specifications | SolaXT-BAT H 5.8 V3 | VARTAelement backup 6 |
|---|---|---|
| General | ||
| Cell chemistry | LFP 1 | – |
| Performance | ||
| Usable capacity | 5.5 kWh 1 | 5.9 kWh ✓ 2 |
| Nominal capacity | 5.8 kWh 1 | 6.5 kWh ✓ 2 |
| Charge power (continuous) | 2.9 kW ✓ 1 | 2.2 kW 2 |
| Discharge power (continuous) | 2.9 kW ✓ 1 | 1.8 kW 2 |
| Peak power | 4 kW 1 | – |
| Efficiency | ||
| Depth of discharge | 95 % 1 | – |
| Electrical | ||
| Phases | – | 3 2 |
| Dimensions & weight | ||
| IP rating | IP66 1 | – |
| Min. operating temperature | -30 °C ✓ 1 | 5 °C 2 |
| Width | 474 mm 1 | 600 mm 2 |
| Height | 715 mm 1 | 1,176 mm 2 |
| Depth | 150 mm 1 | 500 mm 2 |
| Weight | 61.5 kg ✓ 1 | 115 kg 2 |
| Warranty & lifespan | ||
| Warranted cycles | 6,000 ✓ 1 | 4,000 2 |
| Warranty | 10 years 1 | 10 years 2 |
Sources
- High-voltage Battery System T-BAT H 5.8(H) V3 HV11550(H) V3 Datasheet, V1.2 — SolaX Power · accessed 29 Sept 2026
- VARTA element backup, DB178038DACHDE005 — VARTA Storage GmbH · accessed 29 Sept 2026