Bluetti AC500 Review: Modular Whole-Home Backup Power

The Bluetti AC500 takes a different approach from every other power station on the market: it’s a pure inverter with no internal battery. Pair it with one to six B300S expansion batteries and you get anywhere from 3,072Wh to 18,432Wh of LiFePO4 storage — enough to back up an entire home for days. At 5,000W continuous (10,000W surge), it can run virtually anything in your house.

Key Specs at a Glance

• Output: 5,000W continuous (10,000W surge)
• Capacity: 3,072–18,432Wh (requires 1–6x B300S batteries, sold separately)
• Battery Type: LiFePO4 (3,500+ cycles to 80%)
• Weight: 66.2 lbs (inverter only)
• Ports: 16 outputs total — 6x AC (including NEMA 14-50R, TT-30, L14-30), USB-C, USB-A, 12V DC
• Charging: AC wall, solar (up to 3,000W), car, generator, lead-acid, dual charging
• Dimensions: 20.5 × 12.8 × 14.1 in

Who Is It For?

Homeowners who want whole-home battery backup without a permanent installation. Off-gridders, van lifers with serious power needs, and anyone who wants a scalable system that grows with them. If you’ve outgrown a single 2kWh power station but aren’t ready to wire a Tesla Powerwall into your electrical panel, the AC500 fills that gap.

The Modular Advantage

The AC500’s killer feature is its modularity. Start with one B300S ($2,199 for the AC500 + B300S bundle) and add batteries as your budget allows. Each B300S adds 3,072Wh of LiFePO4 capacity. With six batteries, you’re looking at 18,432Wh — comparable to a Tesla Powerwall 2 — with no electrician required.

This also means you can replace individual batteries as they age rather than scrapping the entire system. It’s a fundamentally smarter architecture for long-term ownership.

5,000W Handles Everything

With 5,000W of continuous output, the AC500 can run a full-size refrigerator, window AC unit, washing machine, and several smaller devices simultaneously. The NEMA 14-50R outlet means you can plug in an RV or even a dryer. The TT-30 and L14-30 outlets add even more heavy-duty flexibility. This isn’t a “keep-the-lights-on” backup — it’s a “run-the-house” backup.

Solar Charging at Scale

The AC500 accepts up to 3,000W of solar input, which means you can fully recharge a single B300S in about 1.5 hours of peak sun. With a proper solar array, this system can run indefinitely off-grid. Dual charging (AC + solar simultaneously) speeds things up further.

Where It Falls Short

The AC500 is an inverter only — it does nothing without at least one B300S battery. That makes the entry price steep: $2,199 minimum for the AC500 + B300S bundle, and $4,499+ if you want meaningful whole-home capacity. At 66.2 lbs for just the inverter (plus 73.4 lbs per B300S), portability is not the selling point. This is a system you set up and leave in place.

The Bluetti app works but isn’t as polished as EcoFlow’s. Firmware updates can be finicky, and the Bluetooth connection occasionally drops. None of these are dealbreakers, but EcoFlow and Jackery have better software experiences.

Bluetti AC500 Price in 2026

• AC500 inverter only: ~$2,599
• AC500 + 1x B300S bundle: ~$4,498
• AC500 + 2x B300S bundle: ~$6,098
• Full six-battery setup runs north of $10,000

Check current pricing on Amazon or Bluetti’s website — bundles frequently go on sale during Prime Day and Black Friday.

How It Compares

Spec	Bluetti AC500 + B300S	EcoFlow Delta Pro 3	Jackery 2000 Plus
Output	5,000W	4,000W	3,000W
Base Capacity	3,072Wh	4,096Wh	2,042Wh
Max Capacity	18,432Wh	12,288Wh	24,000Wh
Battery	LiFePO4	LiFePO4	LiFePO4
Base Price	~$4,498	~$3,699	~$1,999
Weight	139.6 lbs (unit + 1 battery)	114.6 lbs	61.5 lbs

The AC500 wins on raw output power and maximum expandability. The EcoFlow Delta Pro 3 offers better out-of-box value with its built-in battery. The Jackery 2000 Plus is far more portable at a lower starting price.

The Bottom Line

The Bluetti AC500 is the most powerful modular power station you can buy. Its 5,000W output, expandable LiFePO4 storage up to 18,432Wh, and heavy-duty outlet selection make it a legitimate whole-home backup system — no installation required. The trade-off is a high entry price and a heavy, non-portable form factor. If you need serious, scalable backup power and want to avoid permanent home battery installation, the AC500 is the best way to get there.