Anker SOLIX BP1000 Expansion Battery: Is It Worth It?
Doubling your power station’s capacity for less than the cost of a second unit sounds like an easy yes. Here’s when the Anker SOLIX BP1000 expansion battery actually pays off, and when it doesn’t.
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Anker’s SOLIX BP1000 is an add-on expansion battery for the SOLIX C1000 and C1000X designed to add 1,056Wh of capacity to a SOLIX C1000 or C1000X, rather than requiring a second full standalone unit. The pitch is straightforward: more capacity per dollar than buying a second base unit, since you’re not paying twice for the inverter, display, and outlets.
| Spec | Detail |
|---|---|
| Added capacity | ~1,056Wh per expansion unit |
| Compatibility | SOLIX C1000 and C1000X only (Anker also sells a matching BP1000X for the C1000X). Not compatible with C1000 Gen 2 or other SOLIX models |
| Connection method | Connects to the C1000/C1000X’s expansion port (see Anker’s manual for setup) |
| Stackable | No. The C1000 takes one BP1000, for a maximum of 2,112Wh |
| Battery chemistry | LFP (LiFePO4), rated 3,000 cycles to 80%+; weighs about 20 lbs |
The Math: Expansion Battery vs. a Second Unit
| Buy a BP1000 Expansion | Buy a Second Base Unit | |
|---|---|---|
| Added capacity | ~1,056Wh | Full base unit capacity (varies by model) |
| Cost per added Wh | Usually lower: no duplicate inverter, display, or outlets (compare current prices) | Higher — paying for a full second unit |
| Added outlets | None — shares the base unit’s outlets | Full independent outlet set |
| Portability | Physically tied to (or cabled to) the base unit | Fully independent, can be used separately |
Check Anker SOLIX BP1000 Expansion Battery on Amazon → Check Anker SOLIX Power Station on Amazon →
Who Should Buy It
Pros
- You already own a compatible SOLIX base unit and regularly run it out of charge before an outage ends
- You want more capacity in a single location without paying for a duplicate inverter and control panel
- You're comfortable with the expansion battery being physically tied to your existing unit rather than portable on its own
Cons
- You need power in two separate locations at once, where a second full unit with its own outlets makes more sense
- You don't currently own a compatible SOLIX base unit, in which case compatibility requirements make this a non-starter
- Your current capacity already comfortably covers your typical outage length
FAQ
Read next: EcoFlow DELTA 3 Classic vs Anker SOLIX C2000 Gen 2 · Portable Power Station vs Generator vs UPS · What Size Generator Runs a Fridge AND Freezer?
Sources
- Anker SOLIX BP1000 product page: 1,056Wh LiFePO4, 3,000 cycles, compatibility
- Anker SOLIX C1000 + BP1000 bundle: 2,112Wh maximum; output unchanged
Checked September 2026. Prices and specs change; confirm on the linked pages before you buy.
