Choosing between the Bluetti EP500 and Bluetti AC300 can be tricky—they’re both high-capacity solar generators designed for backup power, RVs, and off-grid living. This guide compares the specs, features, and key differences between the two to help you decide which is the better fit for your setup.
Based on technical specifications and user-reported experiences, each model has its strengths. Let’s break it down.
Bluetti EP500 vs AC300 Specs Comparison
| Feature | Bluetti EP500 | Bluetti AC300 + B300 |
|---|---|---|
| Battery Capacity | 5100Wh (internal) | 3072Wh per B300 (expandable to 12,288Wh) |
| Inverter Power | 2000W (4800W surge) | 3000W (6000W surge) |
| Battery Chemistry | LiFePO4 | LiFePO4 |
| Cycle Life | 6000+ to 80% | 3500+ to 80% |
| Solar Input | 1200W | 2400W |
| AC Charging | 600W | Up to 3000W (with dual input) |
| Expandability | Not expandable | Expandable up to 4× B300 |
| Output Ports | 15 total | 16 total |
| Weight | 167 lbs (75.7 kg) | 99.2 lbs (AC300) + 79.6 lbs (B300) |
| Mobility | Built-in wheels | Stackable, but no wheels |
Table Caption: Bluetti EP500 vs AC300 Specs Comparison
Power & Performance
BLUETTI AC300+B300+PV350 / Home Battery Backup
from: BLUETTI US
The Bluetti AC300 outperforms the EP500 in pure inverter output, offering 3000W continuous power with a 6000W surge, ideal for heavy-duty appliances. The EP500, while powerful at 2000W, is more suited for medium loads.
For users needing more headroom for tools, HVAC, or large off-grid loads, the AC300 holds the edge.
Battery Capacity & Cycle Life
The EP500 comes with a massive 5100Wh internal battery—but it’s fixed and not expandable. Meanwhile, the AC300 system starts with one B300 battery (3072Wh) but supports up to four for a total of 12,288Wh.
In terms of cycle life, the EP500 has the advantage with 6000+ cycles, making it slightly more long-lasting.
Choose the EP500 for simple, all-in-one capacity. Choose the AC300 if you want modular growth.
Output Ports & Expandability
The AC300 wins in terms of output variety and expansion flexibility. It offers 16 ports, including dual 30A RV ports, 100W USB-C, and multiple wireless charging pads. The EP500 offers 15 ports, but lacks RV-style 30A output.
More importantly, the AC300 supports flexible system scaling, including parallel use with another AC300 for 240V split-phase power.
Portability & Weight
Neither unit is particularly light, but the EP500 is bulkier at 167 lbs—although it includes built-in wheels. The AC300 (99.2 lbs) + B300 (79.6 lbs) combo is slightly lighter per unit and easier to transport in parts, but requires more setup.
The EP500 is better for semi-permanent setups, while the AC300 works better for modular or mobile rigs.
Charging Options
The AC300 has superior charging flexibility with up to 3000W combined AC + solar input, enabling faster top-ups. The EP500 is limited to 1200W solar + 600W AC, meaning slower recharge times overall.
If fast recharging is a priority—especially off-grid with solar—the AC300 is the better choice.
Price & Value
As of recent pricing:
- EP500 retails around $4,999
- AC300 + B300 bundle typically costs $3,499–$3,699
- Extra B300 batteries are ~$2,199 each
If you’re after a ready-to-go, high-capacity unit with no expansion needs, the EP500 provides plug-and-play simplicity. But for flexibility and performance, the AC300 system offers better watt-per-dollar value, especially if expanded over time.
Final Verdict: Which Should You Choose?
- Choose the Bluetti EP500 if you want:
- A simple, all-in-one system with large internal storage
- Long battery life (6000+ cycles)
- Built-in wheels for easy indoor maneuvering
- Minimal setup requirements
- Choose the Bluetti AC300 if you need:
- Higher inverter power and surge capacity
- Expandable battery storage (up to 12.3kWh)
- More solar input and faster charging
- Modular design and RV-ready ports
For most users prioritizing flexibility, future-proofing, and solar efficiency, the AC300 is the better long-term investment.
FAQs
Can you connect two AC300 units together for 240V?
Yes, Bluetti offers a Fusion Box Pro that lets you run two AC300s in split-phase 240V mode—ideal for home backup and 240V tools.
Does the EP500 support expandable batteries?
No, the EP500 is a fixed-capacity system and does not allow external battery expansion.
Is the AC300 better for RVs?
Yes. With its 30A RV port, modular design, and higher solar input, the AC300 is more RV-friendly than the EP500.
Which charges faster with solar?
The AC300 supports up to 2400W of solar input, twice as much as the EP500’s 1200W—meaning significantly faster off-grid charging.
Individual buyer’s guides:
- Bluetti EP500 & EP500Pro Review – Longest-Lasting Solar Generators
- BLUETTI AC300 + B300 Buyer’s Guide: Flexible Power for Home & Travel
Last update on 2025-05-12 / Affiliate links / Images from Amazon Product Advertising API