Expansion Battery 2000
Double the runtime.
Same VoltPak.
2,048 Wh LFP expansion pack. One cable, double the runtime. Hot-swap supported.
Coming Soon · Pricing announced at launch
One cable
Plug in. Keep going.
The VoltLink connector carries power and BMS telemetry in a single sealed cable. The station recognizes the new capacity within seconds and shows combined runtime in the VoltPak app.
Stack as needed
Up to 22.5 kWh.
One battery doubles the runtime. Five batteries turn a VoltPak 2000 into whole-home backup for multi-day outages. Add them as budget allows - the station ceiling is fixed at five.
Compatibility
Works with
In the box
Everything you need. Nothing you don't.
- Expansion Battery 2000
- VoltLink SDC cable (3 ft)
- User manual
- 3-year warranty card
Specs
Every number, documented.
- Chemistry
- LiFePO4 (LFP)
- Capacity
- 2,048 Wh
- Cycle life
- 4,000 cycles to 80%
- Connector
- VoltLink SDC (included)
- Telemetry
- Yes - appears as unified capacity in app
- Hot-swap
- Yes
- Max output (inherits station)
- 2,200 W (VoltPak 1000) / 3,000 W (VoltPak 2000)
- Max chain per station
- 5
- Dimensions
- 16.5 × 11.4 × 11.8 in (420 × 290 × 300 mm)
- Weight
- 45 lb (20.2 kg)
- Enclosure
- Flame-retardant polycarbonate
- IP rating
- IPX3
- VoltPak 1000
- Yes (station output caps at 2,200 W)
- VoltPak 2000
- Yes (station output caps at 3,000 W)
- Third-party stations
- Not supported
Head to head
The numbers, side-by-side.
Published specs, April 2026. Sourced from each brand's public product page.
| Spec | Expansion Battery 2000VoltPak | Power Expansion Battery 2000DJI |
|---|---|---|
| Capacity | 2,048 Wh | 2,048 Wh |
| Chemistry | LiFePO4 (LFP) | LFP |
| Connection | - | Proprietary SDC |
| Max output (paired) | - | 2,400 W |
| Max chain | - | 5 per station |
| Hot-swap | Yes | No |
| Warranty | - | 5 years |
Certification roadmap
Not yet certified. These are the standards we are designing to and plan to pursue before shipping. No certification has been granted and no listing should be assumed.
Expansion Battery 2000
Add capacity without swapping the core. Same isolated LFP compartment.
Pricing announced at launch · Join the list for first access
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- Early-access window before public launch
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FAQ
Answers, before you ask.
Does it have outlets of its own?+
No. The Expansion Battery is a pure capacity extension. All power delivery goes through the VoltPak station you pair it with.
Can I mix a Station 1000 with an Expansion 2000?+
Yes, but the station's AC ceiling still caps at 2,200 W. You get more runtime, not more power.
What happens if one battery in a chain fails?+
The BMS isolates the failed pack and the station continues running on the remaining chain. The app flags the faulty unit by serial.
Ready when the lights aren't.
Coming Soon · Free shipping · 5-year warranty