Ecoflow WAVE 3 Add-on battery
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Build Your Perfect Off-Grid Rig With Our System Calculator
Visit CalculatorThe EcoFlow WAVE 3 Add-On Battery is the perfect upgrade for expanding the runtime of your WAVE 3 Portable Air Conditioner. Designed to integrate seamlessly with the WAVE 3 unit, this modular battery increases portability and extends cooling time when off-grid or during power outages. Whether you’re camping, traveling, or preparing for emergencies, this add-on provides the extra power you need—no wall outlet required.
Extended Cooling Runtime – More Hours of Comfort - Double your air conditioner's runtime by adding 1,159Wh of extra capacity—perfect for long nights or hot afternoons without access to power.
Modular Design – Seamless Integration - Built specifically for the WAVE 3, this battery clicks directly into place, enabling cordless operation and streamlined portability.
Multiple Charging Options – Flexible Power Input - Recharge the add-on battery via solar panels, wall outlets, car adapters, or portable power stations. Ideal for hybrid and off-grid setups.
Li-ion Battery Chemistry – Safe and Lightweight - High-quality lithium-ion cells provide efficient energy density, light weight, and long cycle life—ideal for daily or seasonal use.
Smart Monitoring – Connected Performance - View charge levels, estimated remaining time, and battery health directly through the EcoFlow app or WAVE 3 control panel.


Everything you need is included with your product.
| Category | Specification | Details |
| Compatibility | Compatible With | EcoFlow WAVE 3 Portable Air Conditioner |
| Input/Output | Capacity | 102.4Wh (51.2V = 20Ah) |
| Maximum Output | 858W Max | |
| USB-A Output | 5V⎓2.4A / 9V⎓2A / 12V⎓1.5A (18W Max) | |
| USB-C Output | 5V⎓9V⎓12V⎓15V⎓3A / 20V⎓2.25A⎓5A (140W Max) | |
| AC Output | 1000W Max | |
| Solar Input | 11–60V⎓13A Max (400W Max) | |
| Car Input | 12V/24V⎓8A Max (200W Max) | |
| Battery Runtime | 2 – 8 hours | |
| Battery | Battery Cell Material | LFP (LiFePO₄) |
| Cycle Life | 80% capacity after 4000 cycles | |
| IP Rating | IP65 | |
| Environment | Discharge Temperature | –10°C to 50°C (14°F to 122°F) |
| Charge Temperature | 0°C to 45°C (32°F to 113°F) | |
| Storage Temperature | –10°C to 45°C (14°F to 113°F) | |
| General | Operating Altitude | <2000 m (6562 ft) |
| Net Weight | 9.7 kg (21.4 lb) | |
| Dimensions | 516 × 281 × 111 mm (20.3 × 11.1 × 4.4 in) |
Does the add-on battery work by itself?
No. This battery is an expansion unit only and must be connected to the EcoFlow WAVE 3 Portable Air Conditioner to function.
How much extra runtime will I get?
The add-on provides up to 8 hours of additional runtime in Eco Mode, depending on temperature, mode, and ambient conditions.
Can I charge the battery separately?
Yes. The battery can be charged independently via AC, solar, or a portable power station before attaching to the WAVE 3.
Is installation difficult?
Not at all. It’s a snap-on modular design that attaches securely to the bottom of the WAVE 3 in seconds—no tools needed.
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