===== ECOFLOW DELTA PRO 3 SMART EXTRA BATTERY PRODUCT PAGE CSS ===== /.hb21-spec-wrap max-width: 1100px; margin: 0 auto 40px auto; padding: 0 20px; text-align: center;.hb21-spec-wrap h2,.hb21-spec-wrap h3,.hb21-spec-wrap p,.hb21-spec-wrap li text-align: center;.hb21-product-intro max-width: 920px; margin: 0 auto 30px auto;.hb21-product-intro h2 margin: 0 0 14px 0; font-size: 2rem; line-height: 1.2;.hb21-product-intro p margin: 0 auto 14px auto; line-height: 1.7; max-width: 900px;.hb21-product-intro a color: #0066cc; text-decoration: underline;.hb21-spec-grid display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 30px; text-align: left;.hb21-spec-card background: #f7f7f7; border-radius: 14px; padding: 24px; text-align: left;.hb21-spec-card h3 margin: 0 0 16px 0; font-size: 1.25rem; text-align: left;.hb21-spec-card ul list-style: none; padding: 0; margin: 0;.hb21-spec-card li margin: 0 0 10px 0; line-height: 1.55; text-align: left;.hb21-spec-card strong font-weight: 700;.hb21-spec-card a color: #0066cc; text-decoration: underline;.hb21-warranty-note margin-top: 20px; font-size: 1rem; line-height: 1.6; text-align: left;.hb21-product-headline max-width: 1100px; margin: 0 auto; padding: 34px 20px 10px 20px; text-align: center;.hb21-product-headline h2 font-size: 2.6rem; line-height: 1.15; font-weight: 700; margin: 0; text-align: center;.hb21-section max-width: 1100px; margin: 0 auto; padding: 34px 20px; text-align: center;.hb21-section h2,.hb21-section h3 font-size: 2rem; line-height: 1.2; font-weight: 700; margin: 0 0 14px 0; text-align: center;.hb21-section p max-width: 900px; margin: 0 auto 14px auto; line-height: 1.65; text-align: center;.hb21-section a,.hb21-faq-item a color: #0066cc; text-decoration: underline;.hb21-footnote font-size: 0.9rem; color: #555; margin-top: 10px;.hb21-image-full max-width: 1100px; margin: 0 auto; padding: 14px 20px;.hb21-image-full img display: block; width: 100%; height: auto; margin: 0 auto; border-radius: 8px;.hb21-card-grid max-width: 1100px; margin: 0 auto; padding: 14px 20px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px;.hb21-card text-align: center;.hb21-card img display: block; width: 100%; height: auto; border-radius: 8px; margin-bottom: 10px; object-fit: cover; aspect-ratio: 4 / 3;.hb21-card h3 margin: 0 0 6px 0; font-size: 1.1rem; line-height: 1.3; text-align: center;.hb21-card p margin: 0; line-height: 1.5; font-size: 0.95rem; text-align: center;.hb21-faq-wrap max-width: 980px; margin: 40px auto 20px auto; padding: 0 20px; text-align: center;.hb21-faq-wrap h2 font-size: 2rem; line-height: 1.2; margin-bottom: 20px; text-align: center;.hb21-faq-item background: #f7f7f7; border-radius: 12px; padding: 18px 20px; margin-bottom: 14px; text-align: left;.hb21-faq-item h3 margin: 0 0 8px 0; font-size: 1.1rem; line-height: 1.4; text-align: left;.hb21-faq-item p margin: 0; line-height: 1.65; text-align: left; @media (max-width: 989px).hb21-spec-grid,.hb21-card-grid grid-template-columns: 1fr;.hb21-product-intro h2,.hb21-product-headline h2,.hb21-section h2,.hb21-section h3,.hb21-faq-wrap h2 font-size: 1.7rem;.hb21-product-headline h2 font-size: 2rem; Overview
The EcoFlow DELTA Pro 3 Smart Extra Battery adds 4096Wh of LFP storage to your EcoFlow DELTA Pro 3, doubling your standalone capacity from 4kWh to 8kWh. Connect two extra batteries and the DELTA Pro 3 system scales up to 12kWh total, enough to back up an household's essentials through a long winter outage or run a motorhome off-grid for days at a time.
It connects to the DELTA Pro 3 via the included extra battery cable with no tools, wiring, or installer required, and it is also cross-compatible as an expansion battery for the EcoFlow DELTA 3 Max Plus and EcoFlow DELTA 3 Ultra Plus. Automotive-grade LFP cells deliver 4000 charge cycles to 80% of original capacity and are backed by a 5-year warranty in New Zealand. EcoFlow DELTA Pro 3 Smart Extra Battery Specs:
- Capacity: 4096Wh (51.2V, 80Ah)
- Cell Chemistry: Lithium Iron Phosphate (LiFePO4 / LFP)
- Cycle Life: 4000 cycles to 80% capacity
- Weight: Approx. 33kg
- Dimensions: 691.8 x 295 x 215.5mm
- Display: LED Array
- IP Rating: IP20 enclosure (internal battery pack IP65)
- Optimal Operating Temperature: 20°C to 30°C
- Charge Temperature: 0°C to 45°C
- Discharge Temperature: -10°C to 45°C
- Storage Temperature: -10°C to 45°C
- Input / Output Port: EcoFlow proprietary extra battery port
- Input: 40-58.4V, 80A max
- Output: 40-58.4V, 100A continuous What's in the Box?
- 1 x EcoFlow DELTA Pro 3 Smart Extra Battery
- 1 x EcoFlow Extra Battery Cable
- 1 x Product Document Bundle (User Manual and Warranty Card)
