The Marstek Venus E Max is Marstek’s largest single-unit home battery, storing 10.24kWh — enough to cover a full day’s average UK household consumption — expandable to 30kWh for whole-home energy independence. Like all Venus E units, it connects to your 230V supply with no rewiring, accepts up to 1,400W of direct solar input, and switches to battery in under 15ms during outages. Built on LiFePO4 cells rated to 6,000+ cycles, IP65 sealed, and backed by a 10-year warranty. Currently sold out at all UK retailers — exceptional demand for this capacity tier.
Capacity: 10.24kWh | Expandable to 30kWh (3 units)
Output: 1,500W bidirectional AC | Backup: 1,500W
Solar input: 1,400W (4 × MPPT, 16–60V)
EPS backup switchover: <15ms | IP65
LiFePO4 | 6,000+ cycles | 15+ year design life
Dimensions: 620 × 480 × 160mm | Weight: 63kg
Wi-Fi + Bluetooth + LAN | 10-year warranty
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