Which MARSTEK product is right?
Answer three questions with the customer, then confirm with the backup calculator and a site survey.
1. Where will the power be used?
| The customer… | Start with | Why |
|---|---|---|
| Has a house and already has solar panels with a grid-tie inverter | VENUS E 3.0 | AC-coupled: plugs in alongside any existing PV system; stores excess solar, powers the BACKUP socket in a brownout |
| Has a smaller home or apartment, wants basic backup and self-consumption | VENUS E Mini | Compact 2 kWh AC-coupled storage |
| Is installing solar for the first time and wants battery storage too | MARS I PLUS | Hybrid inverter + 5.12 kWh battery modules in one system — no separate inverter needed |
| Needs whole-property backup or lives where the grid is weak or absent (farms, resorts, remote areas) | V6000 | 6 kW inverter + 15 kWh battery, 9 kW PV input, on/off-grid, IP65 |
| Wants portable power for camping, beach, events, small farm tools, or a room during brownouts | V500, M1200, M2200 | No installation; charge from the wall or solar panels |
| Just needs to keep phones and laptops charged | Powerbanks | Pocket-size, up to 65 W |
2. What must keep running during a brownout?
- A few lights, fans, Wi-Fi, phones → a portable station (V500 / M1200 / M2200) is often enough.
- Refrigerator + lights + fans + TV → VENUS E 3.0, M2200, or V6000 depending on hours needed.
- Aircon, water pump, or the whole house → MARS I PLUS (with enough battery modules) or V6000. These need a qualified installer.
Use the backup calculator to check both power (watts at the same time) and energy (kWh over the outage).
3. Indoors, outdoors, or both?
- Outdoor / wet locations: V500, V6000 and VENUS E 3.0 are rated IP65 in their datasheets.
- Moves around: M1200, M2200 and V500 are portable.
- Fixed installation: MARS I PLUS and V6000 must be installed and commissioned by trained ESS professionals per their manuals.

VENUS E 3.0
5.12 kWh plug-in AC-coupled home battery for any existing solar system
- Battery5.12 kWh LFP
- Backup output2.5 kVA
- ProtectionIP65

MARS I PLUS
6 kW hybrid inverter + stackable 5.12 kWh batteries for new solar installs
- Inverter3.6–6 kW
- Battery5.12 kWh × 2–6
- PV input2 MPPT · 550 V

V6000
6 kW inverter + 15 kWh battery all-in-one solar backup station
- Battery15.07 kWh LFP
- Inverter6 kW / 12 kW peak
- PV input2 × 4.5 kW

V500
Waterproof, fanless 500 W / 2 kWh solar generator
- Battery2.01 kWh LFP
- AC output500 W / 1000 W peak
- ProtectionIP65

M1200
1,030 Wh portable power station with 1,800 W AC output
- Battery1.03 kWh LFP
- AC output1,800 W
- Solar input800 W

M2200
2,240 Wh portable power station with 2,400 W AC output
- Battery2.24 kWh LFP
- AC output2,400 W
- Solar input2 × 600 W
Final system design needs a site survey by a qualified installer, and prices must come from the latest SRP list or Silvera's commercial team. See the customer qualification checklist.