Solar Panels![EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity](https://storage.googleapis.com/solarbazaar/products/ecoflow/ecoflow-delta-2-max-smart-extra-battery.webp?GoogleAccessId=solarbazaar-storage%40maksof-technologies.iam.gserviceaccount.com&Expires=4922899200&Signature=cqs3HYrQRW3Ym1BvgLKPvf4lWM19Zy0%2FbjmFm5FHvGPXFosu9JFHNQLq2aYTSYUoMDOdswIUbSpaEd1K9RJV1N%2BdKoWlv35eZd2MYQ5DtHt8Sf3hNGEAKUPi6AQ6XuMfP0zGqvupsgR2%2FMaMVVrYMzu9eMMrumvDo0p3RvX8WXyxmkE3SNt9VgWnSFvIR3zn5MROvyl60RCXosHV3YO1mp4LuBp2Hzwuud%2FAwsWx7rJj%2F63J4d5HT12YwYFUiR6UJFyJM04iHBBtzwdFlqZvS2SP9UD2or8qqFq9mHoLAk4KluQ7qitkyQlzgjGE5NK6AdNcGoCv%2F%2Fz1Y5fGIUKS2w%3D%3D)
Batteries
BrandEcoflow
EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity
$ 799USD · price may vary
BrandEcoflow- Model
- EFDELTA2MaxEB
- Specifications
- 0
Overview
EcoFlow DELTA 2 Max Smart Extra Battery
EcoFlow DELTA 2 Max Smart Extra Battery has an expandable capacity. Increase the capacity of DELTA 2 Max with an extra 2046Wh.
Triple the power - 2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144Wh. Ideal for home backup, RVing, outdoors or even everyday use.
Built to last 6× longer - Get 10 years of daily use until hitting 80% of its original capacity. That’s down to its LFP battery chemistry giving you 3000+ cycles.
5-Year Warranty
What’s Included With Your Order?
Extra Battery Cable
User Manual
Warranty Card
Free Shipping
Lifetime Customer Support (Email, Live Chat & Phone)
Expandable capacity
Increase the capacity of DELTA 2 Max with an extra 2046Wh.
Triple the power
2-6kWh expandable capacity to fit your energy storage needs. Add up to two EcoFlow DELTA 2 Max Smart Extra Battery to hit a capacity of 6144wh. Ideal for home backup, caravanning, outdoors or even everyday use.
10-Year Long-lasting LFP Battery
Durable, Safe, Lightweight
With its upgraded LFP battery chemistry, DELTA 2 Max has a lifespan of 3000 complete cycles until it reduces to 80% capacity. You'll get pretty much 10 years of power, even if you use it every day. That's 6× longer than other power stations with a similar capacity and output.
LFP Battery Chemistry
That's 6× longer than other power stations with a similar capacity and output.
Advanced BMS Protection
A built-in battery management system regulates vitals, including voltage, current, and temperature, keeping DELTA 2 Max safe, secure, and built to stand the test of time.
Robust Design
Made with a sturdy one-piece design, DELTA 2 Max is designed for the rough and tumble of portability. Each port is reinforced, protecting them against wear and tear.
Upgraded Tech, Lighter Weight
Even with its upgraded LFP battery, DELTA 2 Max is still 30% lighter than similar power stations on the market.
Run 99% of Appliances with X-Boost
Power pretty much anything with up to 3400W Output
DELTA Max powers almost all the devices you need with a large 2400W AC output. With X-Boost proprietary technology, run appliances with an output of up to 3400W. Compared with similar portable power stations, DELTA 2 Max can power more devices while also preventing overloading and overheating.
120V Home Backup: Power through outages
Power your essential appliances with a hefty 2400W AC output by connecting DELTA 2 Max (2kWh) and up to two Smart Extra Batteries (6kWh) with your home's transfer switch for partial home backup. With a plug-and-play design, it's easier than ever to prepare for blackouts.
Power for the entire family
2048Wh Capacity
A generous 2048Wh capacity makes DELTA 2 Max ideal for home backup, running your essentials for hours. Using your transfer switch, or plugged in directly, keep your fridge on and stop food from spoiling for up to 14 hours. With its lightweight design, DELTA 2 Max is portable enough to grab and go on the next camping trip.
Experience the world's fastest 43 minute recharge
Fuel Up 80% in Only 43 Mins*
With DELTA 2 Max's upgraded tech, combine up to 1000W solar input with AC for world-leading charging speeds. In only 43 min get an 80% charge. Or stick with AC for an 80% charge in a speedy 1.1 hour.
*When combined solar and AC input is 2400W.
99% MPPT Efficiency
Maximise solar generation during daylight hours
EcoFlow's smart (MPPT) algorithm automatically detects voltage and current in real-time to give you optimum solar generation throughout the day, even during cold and cloudy days. With a solar input of 1000W, connect up to 2 EcoFlow 400W Portable Solar Panels or 4 sets of 220W Bifacial Solar Panels.
EcoFlow DELTA 2 Max Smart Extra Battery Specs
Capacity 2048Wh
Input Port 51.2V, 2000W Max
Output Port 51.2V, 3200W Max
Battery LFP chemistry, 3000 cycles to >80% capacity
Dimension 464 × 235 × 283 mm (18 × 9 × 11 in)
Weight 19kg (42lbs)
Compatible with DELTA 2 / DELTA Max 2000/ DELTA 2 Max
Still Have Questions? Give us a call today 1-877-242-2792
Reading the specifications
Detailed specifications for EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity have not been published yet. Ecoflow lists this battery in the Batteries, and we add fields as the manufacturer releases them — in the meantime, ask your distributor for the datasheet before ordering.
For a battery, the figures that matter most are usable capacity after depth of discharge — LiFePO4 typically allows 80–100%, lead-acid closer to 50%, system voltage: 12 V, 24 V and 48 V for low-voltage packs, or a high-voltage stack, continuous charge and discharge current, which limits how much power you can draw from the pack and cycle life at a stated depth of discharge, commonly 3,000–6,000 cycles for LiFePO4. Storage is what turns a solar array from a daytime bill-reducer into a system that covers evening loads and rides through outages. It is normally the single most expensive component, so sizing it correctly matters more than with any other part.
Choosing a battery: the checks that matter
The checks below apply to any battery. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.
- Leave room to expand. Packs that parallel cleanly let you add capacity later; ones that do not force a full replacement.
- Compare usable kilowatt-hours, not nameplate capacity. A 100 Ah lead-acid battery at 12 V is nominally 1.2 kWh but only about 0.6 kWh is safely usable, while a 100 Ah LiFePO4 pack gives you roughly 1.0–1.2 kWh.
- Size from your evening consumption. Add up what actually runs after sunset for the hours you want covered, then divide by the usable capacity per unit — that number, not the array size, sets how many batteries you need.
- Check the continuous discharge rating against your inverter. A battery that stores plenty of energy but can only deliver 50 A cannot support a large inverter at full output.
What people get wrong
- Installing lithium packs in an unventilated, hot enclosure. Sustained high temperature is the fastest way to lose cycle life.
- Ignoring the charge current limit and pairing a large array with a small bank, which trips protection and shortens life.
- Mixing old and new batteries, or different chemistries, in one bank. The weakest unit drags the whole bank down and can be damaged by the others.
Price and availability
EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity is listed at $ 799 (USD). Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.
SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in your country: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports Ecoflow locally before ordering.
EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity — frequently asked questions
How much does EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity cost?
EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity is listed at $ 799 (USD). The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.
Who makes EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity?
EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity is a Ecoflow product, listed under batteries with model reference EFDELTA2MaxEB. The Ecoflow brand page lists the rest of its range so you can compare across the catalogue.
Is EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity right for my system?
That depends on what it has to connect to. For a battery, check system voltage: 12 V, 24 V and 48 V for low-voltage packs, or a high-voltage stack, continuous charge and discharge current, which limits how much power you can draw from the pack and cycle life at a stated depth of discharge, commonly 3,000–6,000 cycles for LiFePO4 against the rest of your equipment before price enters the decision. Check the continuous discharge rating against your inverter. A battery that stores plenty of energy but can only deliver 50 A cannot support a large inverter at full output.
Where can I buy EcoFlow DELTA 2 MAX [Smart Expansion Battery] | Expand Storage Capacity?
SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer — buying in-channel is what keeps the manufacturer's warranty valid.
Reviews
No reviews yet
Be the first to review this product.
Write a Review
Share your experience — no account needed.
