Battery Plans
Home battery backup, sized to your life
Five plans from 9 kWh to 36 kWh. Modular architecture means you can start small and expand later. Same controller, add battery modules.
Choose Your Plan
Essential
Critical circuit protection
or $10,202 upfront
9 kWh
Capacity
11.5 kW
Continuous
8h
Up to
1/1
Batt / Ctrl
Apartments, condos, or homes that only need fridge, Wi-Fi, and lights covered
Plus
Full day coverage
or $13,481 upfront
18 kWh
Capacity
11.5 kW
Continuous
16h
Up to
2/1
Batt / Ctrl
Most homes, with enough capacity to ride out a full day with comfort
Reserve
The generator alternative
or $16,760 upfront
27 kWh
Capacity
11.5 kW
Continuous
24h
Up to
3/1
Batt / Ctrl
Homeowners who want to replace or avoid buying a generator entirely
Premium
Dual inverter power
or $19,520 upfront
27 kWh
Capacity
23 kW
Continuous
24h
Up to
3/2
Batt / Ctrl
Larger homes, dual-zone AC, or homeowners who want to run everything without thinking
Ultimate
Maximum capacity
or $22,799 upfront
36 kWh
Capacity
23 kW
Continuous
32h
Up to
4/2
Batt / Ctrl
Large homes, extended outage protection, or homeowners with high energy usage
Side by Side
| Essential | Plus | ReservePopular | Premium | Ultimate | |
|---|---|---|---|---|---|
| Capacity | 9 kWh | 18 kWh | 27 kWh | 27 kWh | 36 kWh |
| Batteries | 1 | 2 | 3 | 3 | 4 |
| Controllers | 1 | 1 | 1 | 2 | 2 |
| Continuous Output | 11.5 kW | 11.5 kW | 11.5 kW | 23 kW | 23 kW |
| Runtime (Up to) | 8 hrs | 16 hrs | 24 hrs | 24 hrs | 32 hrs |
| Equipment Price | $10,202 | $13,481 | $16,760 | $19,520 | $22,799 |
V2X
V2X
Your EV becomes a backup battery
The V2X module is a 25 kW DC bidirectional charger that lets a compatible electric vehicle power your home during an outage. A typical EV carries 60–100 kWh of usable battery, more capacity than our largest fixed battery plan.
Key Features
- 25 kW DC bidirectional charging: powers home from EV or charges EV from grid/solar
- Direct DC-to-DC connection: bypasses vehicle AC inverter for higher efficiency
- Connector choice: CCS1 or NACS (specified at order)
- Cable lengths: 16.4 ft (5 m) or 24.6 ft (7.5 m)
- Integrates with Smart controller: automatic outage response
- Smart scheduling: only uses EV power when needed, preserves driving reserve
Find Your Plan
Answer 3 quick questions and we'll recommend the best fit.
What size is your home?
Why Sigenergy
We chose this platform after evaluating every major residential battery system. Here's what sets it apart.
17.1 kW Surge Handling
Single inverter handles AC startup without stacking units. Documented 10-second surge spec.
Modular Architecture
Start with 9 kWh and expand to 36 kWh on the same controller. No hardware replacement needed.
Native V2X Support
25 kW bidirectional DC module turns your EV into a home backup battery extending runtime to days.
Integrated Smart Panel
Built-in load management prioritizes circuits automatically. No separate gateway required.
< 20ms Transfer
Battery kicks in before electronics even register the outage. Medical equipment stays running.
10-Year Warranty
LFP chemistry rated for 6,000+ cycles. Zero annual maintenance. Fixed cost over the lifetime.
Ready to see your options?
Get a personalized estimate for your home. No pressure, no obligation.