If you’re deciding between the Bluetti EP500 and Bluetti AC500, you’re likely looking for a serious off-grid or whole-home backup power solution. Both offer LiFePO4 batteries, powerful inverters, and solar charging—but the differences in modularity, expandability, and output are significant.
This guide compares the specs, features, and key differences between the EP500 and AC500 to help you choose the right solar generator for your energy needs.
Bluetti EP500 vs AC500 Specs Comparison
| Feature | Bluetti EP500 | Bluetti AC500 (with B300S) |
|---|---|---|
| Battery Capacity | 5100Wh (built-in) | 3072Wh per B300S (expandable to 18,432Wh) |
| Inverter Power | 2000W (4800W surge) | 5000W (10000W surge) |
| Battery Chemistry | LiFePO4 | LiFePO4 |
| Cycle Life | 6000+ to 80% | 3500+ to 80% |
| Solar Input | 1200W max | 3000W max |
| AC Charging | 600W | 5000W (with dual charging) |
| Weight | 167 lbs | 66.2 lbs (AC500) + 83.8 lbs (B300S) |
| Expandability | Not expandable | Up to 6× B300S (18,432Wh total) |
| Wheels | Yes | No |
| App Control | Yes | Yes |
| UPS Function | Yes (offline) | Yes (online UPS) |
Table Caption: Bluetti EP500 vs AC500 Specs Comparison
Power & Performance
BLUETTI AC500 + B300S / Home Battery Backup – $2,599.00
from: BLUETTI US
The Bluetti AC500 offers a massive 5000W pure sine wave inverter, doubling the output of the EP500 (2000W). This makes the AC500 better suited for whole-home backup and high-demand appliances like central AC or electric dryers.
Surge capacity also favors the AC500 at 10,000W—more than enough to handle appliance startup spikes.
Battery Capacity & Cycle Life
The EP500 includes a 5100Wh internal LiFePO4 battery with over 6000 cycles, making it a reliable long-term investment.
The AC500 is modular and requires at least one B300S battery (3072Wh), but it can scale up to 18,432Wh by connecting up to six units. However, it offers fewer cycles per battery—around 3500.
For static setups or RVs, the EP500’s built-in battery is convenient. For expandable needs or long outages, the AC500 wins.
Output Ports & Expandability
The EP500 comes with 15 output ports, including multiple AC, DC, USB-A, USB-C, and wireless charging pads. However, it’s not expandable.
The AC500, while modular, offers more flexibility—especially when paired with Bluetti’s Smart Home Panel. It also supports split-phase 240V operation when combined with a second AC500.
If expandability and future-proofing are top priorities, the AC500 system is more versatile.
Portability & Weight
The EP500 is bulky at 167 lbs but includes built-in wheels. It’s designed more as a stationary home backup solution.
In contrast, the AC500 + B300S combo separates the inverter and battery into two units (66.2 lbs and 83.8 lbs respectively), making it easier to move in parts but harder to roll around without a cart.
If mobility is important, neither system is ideal, but the EP500 has a slight edge with its integrated wheels.
Charging Options
Bluetti AC500 supports faster and more diverse charging:
- 3000W solar input
- Dual AC + solar charging up to 8000W
- Can charge in under 1.5 hours with optimal input
EP500 supports only up to 1200W solar and slower 600W AC charging, requiring up to 9–10 hours to fully charge.
If fast recharge times matter (e.g., for emergencies or heavy use), the AC500 is clearly superior.
Price & Value
The EP500 has a higher upfront cost but includes everything in one unit. It’s ideal for those who want plug-and-play simplicity with a large battery.
The AC500 base unit is often cheaper, but requires purchasing at least one B300S battery. When configured similarly to the EP500 (around 5000Wh), pricing becomes comparable—but with better performance and expandability.
For future-proofing and performance, the AC500 delivers more value.
Final Verdict: Which One Should You Choose?
Choose the Bluetti EP500 if you:
- Want an all-in-one, plug-and-play solution
- Prefer higher cycle life and simplicity
- Don’t need modular expansion
Choose the Bluetti AC500 if you:
- Need higher inverter output or 240V capability
- Want to expand battery capacity over time
- Value faster charging and advanced integration options
FAQs
Can the Bluetti EP500 be expanded with external batteries?
No, the EP500 is a standalone unit with a fixed 5100Wh battery. It does not support external battery expansion.
What’s the maximum capacity you can get with the Bluetti AC500?
The AC500 supports up to six B300S batteries, totaling 18,432Wh, ideal for multi-day backup.
Does the Bluetti AC500 support 240V appliances?
Yes, but you need two AC500 units connected via Bluetti’s Fusion Box to enable 240V split-phase output.
Which is better for solar-only charging setups?
The AC500 supports up to 3000W solar input vs. 1200W on the EP500, making it far more efficient for solar charging.
Individual buyer’s guides:
- Bluetti EP500 & EP500Pro Review – Longest-Lasting Solar Generators
- BLUETTI AC500 + B300S Buyer’s Guide: A Modular Powerhouse for Home Backup and Off-Grid Use
Last update on 2025-05-12 / Affiliate links / Images from Amazon Product Advertising API