An all-in-one system can simplify component integration, but battery capacity, input limits, protection and service access still need a complete design.
All-in-one power systems have become a serious alternative to custom-built van electrical systems. Here's an honest look at the major options and who they make sense for.
What all-in-one systems offer
The appeal is straightforward: one system, one app, fewer components to source and wire, and vendor support if something goes wrong. The tradeoff: higher cost and less flexibility than mixing and matching the best individual components.
Major all-in-one options
EcoFlow Power Kit
EcoFlow's Power Kit ($1,400–$2,500 depending on battery size) combines:
- LFP battery (1kWh, 2kWh, or 4kWh options)
- Power Hub (integrated solar controller, DC-DC charger, shore charger, inverter outputs)
- EcoFlow app monitoring
Highlights: Very clean installation, well-designed app, modular battery expansion. The Power Hub connects to solar, alternator, and shore simultaneously.
Limitations: Proprietary ecosystem — expansions and replacements require EcoFlow components. Not serviceable the same way individual components are.
Best for: Builders who want a polished, app-integrated system and don't want to source 8 separate components.
Renogy REGO System
Renogy's REGO integrates solar controller, DC-DC charger, and monitoring. Less fully integrated than EcoFlow's Power Kit — you still add your own battery and inverter separately, but the charging/management side is unified.
Best for: Builders who like Renogy's ecosystem and want centralized charge management.
Victron GX System (Cerbo GX + ecosystem)
Not a single product but an ecosystem: a Cerbo GX hub connects Victron's SmartSolar MPPT, Orion XS DC-DC charger, MultiPlus inverter/charger, and SmartShunt via VE.Direct or VE.Bus. The GX provides a full touchscreen dashboard and remote monitoring via VRM.
Cost: Higher — the Cerbo GX ($180) plus individual Victron components adds up to $1,500–$3,000 for a full system.
Highlights: Unmatched monitoring and reliability. Widely supported by van build professionals. True integrated ecosystem.
Best for: Serious builds where monitoring, reliability, and expandability matter. Fully repairable with standard Victron components.
Battle Born BBGC2 / prebuilt systems
Several companies offer prebuilt battery boxes and wiring harnesses (Battle Born, Xantrex, Go Power) that simplify battery installation but leave the full wiring to you.
All-in-one vs custom build comparison
| All-in-one | Custom build | |
|---|---|---|
| Installation complexity | Low | Moderate–High |
| Cost (200Ah equivalent) | $1,800–$3,000 | $1,200–$2,000 |
| Monitoring | App-integrated | Optional (add Victron) |
| Repairability | Proprietary | Standard components |
| Customization | Limited | Full |
| Best for | Time-limited builders | Experienced or learning builders |
Verdict
All-in-one systems are genuinely good products — particularly the EcoFlow Power Kit and the Victron ecosystem. If you value installation simplicity and integrated monitoring over cost optimization, either is worth the premium. If you're comfortable sourcing components and want the best performance per dollar, a custom Victron or Renogy build still wins on value.
Worked planning check
Price one package against separate equipment using the same 1,000Wh daily load, two-day reserve and charging assumptions. Include cables, mounting, displays, AC distribution and commissioning on both sides. A package excluding the battery cannot be compared directly with a complete installed system.
The figures or dimensions in this example are explicit planning assumptions, not a product test or an installation specification. Replace them with your equipment data and actual measurements.
Planning questions
How long will a 1000Wh power station last?
Divide the energy actually available at the chosen outlet by the average load. As an illustrative calculation, 800Wh delivered to a 100W average load gives eight hours; real losses and temperature vary.
Is battery capacity the same as inverter output?
No. Wh describes stored energy, while W describes power. A unit can have enough energy for a trip yet be unable to start a particular appliance.
Can I charge a power station from any solar panel?
Only if voltage, current, connector and polarity satisfy the exact station’s input requirements, including cold-weather panel voltage. An adapter does not change those limits.
Related
- Campervan electrical system guide
- Van electrical parts list
- Van Wiring Kits Reviewed: Renogy, Victron, and Complete Kits
- Van electrical budget and cost guide
Use the free electrical planner to organise your daily loads and charging assumptions.
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Jack Kennedy is a self-builder who has built two vans. He created Roam Wired to simplify conversion planning and share free tools, supported by affiliate links.
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