Portable power stations are becoming increasingly popular, and for good reason. They offer a reliable source of power for camping trips or as an emergency backup during unexpected blackouts. However, choosing the right one can be a bit tricky.
Understanding battery capacity and the different types of battery technology, such as Lithium-ion versus LiFePO4, can pose challenges to potential buyers. That’s where we come in.
In this article, we’ll be comparing two models: the EcoFlow DELTA 2 and the EcoFlow DELTA Max. We aim to provide you with detailed comparisons to help you select the best option that suits your needs. So let’s dive in without any further ado.
Before diving in, we recommend you check out the helpful comparison table on the EcoFlow website to get a feel for where these products sit in their line-up, particularly in relation to their newly released models.
Battery Specs and Features
Battery Capacity (Wh): The EcoFlow DELTA 2 boasts a capacity of 1024Wh, while the EcoFlow DELTA Max offers nearly double that at 2016Wh. This spec is vital as it indicates the energy storage capability of each device in watt-hours.
A higher figure means you can power more devices for longer periods. Therefore, if your energy needs are substantial, opt for a model with a greater Wh value.
Battery Type: The EcoFlow DELTA 2 uses a LiFePO4 battery, renowned for its safety and longevity. This makes it an excellent choice for regular use or important applications. In contrast, the EcoFlow DELTA Max utilises an NCM type Lithium-ion battery, which typically provides higher energy density but may not last as long.
Understanding the type of battery can give you a good idea of how durable the unit will be and how safely it’ll function.
Life Cycles: The EcoFlow DELTA 2 and the DELTA Max differ significantly in their cycle life. The former offers a range of 3,000 to over 80%, while the latter provides up to 800 cycles before dropping to an 80% capacity. This indicates that the DELTA 2 may offer greater longevity and cost-effectiveness over time due to its higher number of charge-discharge cycles.
Expandable Capacity: The EcoFlow DELTA 2 and DELTA Max both offer the ability to connect additional batteries, enhancing their overall storage capacity. The DELTA 2 supports one extra battery up to 3040Wh, while the DELTA Max can handle two extras for a whopping total of up to 6kWh. This feature is particularly handy when you’re off-grid or in situations where power sources are scarce.
AC Output (W): The EcoFlow DELTA 2 and the EcoFlow DELTA Max differ significantly in their maximum continuous power output from the AC outlets. The former offers an output of 1,800W while the latter provides a more substantial 2400W.
This difference is significant if you’re planning to run high-powered devices such as microwaves or power tools. In this case, the DELTA Max would be your better option due to its higher wattage rating.
Surge Power (W): The EcoFlow DELTA 2 and the EcoFlow DELTA Max both cater to devices requiring a short burst of high power upon start-up. The DELTA 2 offers a surge power capacity of 2,700W, which is substantial for most household appliances. However, the DELTA Max outperforms with an impressive surge power rating of 4,600W, catering to more demanding equipment or multiple appliances simultaneously.
Ports and Outlets
AC Outlets: Both the EcoFlow DELTA 2 and DELTA Max models feature four AC outlets, enabling simultaneous powering of multiple devices. However, there’s a slight difference in voltage between the two units. The DELTA 2 operates at 220V-240V while the DELTA Max runs slightly higher at 230V.
It’s vital to ensure that these voltages align with your device requirements to avoid any potential damage or inefficiency. So, despite their similarities in outlet quantity, this variance in voltage could be a deciding factor depending on your specific needs.
USB-A Outlets: Both the EcoFlow DELTA 2 and DELTA Max models feature two outlets with a standard charge of 5V, 2.4A. However, there’s a difference in their fast charging capabilities; while the DELTA 2 offers three different voltages for fast charging (9V, 2A /12V,1.5A), the DELTA Max only mentions ‘Fast Charge’ without specifying voltage or amperage.
This could imply that the DELTA Max has a more versatile fast-charging capability but without specific details it’s hard to compare directly. Both models would be suitable for charging low-power devices like smartphones and tablets efficiently due to their multiple USB-A ports.
USB-C Outlets: Both the EcoFlow DELTA 2 and DELTA Max models feature two outlets, with a maximum output of 100W. This indicates that both products can efficiently charge larger devices such as laptops, in addition to smartphones. The key difference lies in their voltage range; the DELTA 2 offers more versatility with its multiple voltage options (5/9/12/15/20V), while this specification is not provided for the DELTA Max.
DC5521 Outlets (5.5mm): Both the EcoFlow DELTA 2 and DELTA Max models feature two outlets. However, there’s a difference in their specifications.
The DELTA 2 model offers a fixed voltage of 12V with a maximum current of 3A and power output of up to 38W. On the other hand, the DELTA Max provides variable voltage with an increased maximum current capacity at 5A.
This means that while both can cater to certain electronic devices and smaller appliances, the DELTA Max may offer more flexibility due to its variable voltage capability. It’s important for potential users to check if their devices require this type of outlet before making a decision.
Other DC Outlets: Both the EcoFlow DELTA 2 and DELTA Max models feature a single car outlet. This is particularly handy for charging devices that utilise car chargers or specialised plugs. If you’re in possession of such gadgets, this attribute should be taken into account when choosing between these two models.
AC Charging (W): The EcoFlow DELTA 2 has a maximum power input of 1,200W from a wall outlet, while the EcoFlow DELTA Max can accept up to 2000W. This suggests that the DELTA Max could potentially charge faster due to its higher wattage. However, it’s important to weigh this against each unit’s total battery capacity when making comparisons.
DC / Car Charging: Both the EcoFlow DELTA 2 and DELTA Max support a 12V/24V battery with an 8A capacity. The key difference lies in their maximum power output, where the DELTA 2 offers up to 1,100W. Both models have the added convenience of DC charging capabilities, making them ideal for road trips or situations without access to AC outlets.
Solar Charging (W): The EcoFlow DELTA 2 has a maximum solar input of 500W, while the EcoFlow DELTA Max can accept up to 800W. This indicates that the DELTA Max would charge faster from solar panels, making it more efficient for off-grid use or during emergencies.
Maximum Input (W): The EcoFlow DELTA 2 has an AC input of 1100W, while the EcoFlow DELTA Max boasts a higher capacity at 2000W. This difference in wattage indicates that the DELTA Max would typically charge faster due to its ability to accept more power from charging sources.
Wireless Charging Pad: Both the EcoFlow DELTA 2 and DELTA Max models lack wireless charging capabilities. This feature, while handy for charging smartphones or other devices without cords, isn’t essential to all users.
Smart App Control: Both the EcoFlow DELTA 2 and DELTA Max models offer smartphone app control, providing users with handy features such as battery status updates and power input/output monitoring. The connection to the app for both units is facilitated through Wi-Fi and Bluetooth.
This shared feature enhances user convenience across both models, allowing for easy remote management of each unit’s functions. There doesn’t appear to be any significant difference between the two in this regard; they’re on par in terms of connectivity options.
Warranty: The EcoFlow DELTA 2 offers a warranty period of five years, while the EcoFlow DELTA Max provides two years, extendable by an additional year upon product registration. This suggests that the manufacturer has greater confidence in the durability and longevity of the DELTA 2 model. However, it’s always wise to scrutinise the terms and conditions attached to these warranties.
EcoFlow DELTA 2 vs EcoFlow DELTA Max Comparison Table
|EcoFlow DELTA 2
|EcoFlow DELTA Max
|Battery Capacity (Wh)
|Supports one extra battery (DELTA 2 or DELTA Max) up to 3040Wh
|Yes, up to 6kWh with two extra batteries
|3,000 to 80+%
|800 cycles to 80%
|AC Output (W)
|Surge Power (W)
|4 Outlets – 220V-240V
|4 Outlets – 230V
|2 Outlets – 5V, 2.4A + 2 Outlets – 5V fast charge, 2.4A / 9V, 2A / 12V, 1.5A
|2 Outlets – 5V, 2.4A + 2 Outlets – Fast Charge
|2 Outlets – 5/9/12/15/20V, 5A, 100W Max
|2 Outlets – 100W Max
|DC5521 Outlets (5.5mm)
|2 Outlets – 12V / 3A, 38W Max
|2 Outlets – Variable Voltage, 5A Max
|Other DC Outlets
|1x Car Outlet
|1x Car Outlet
|Wireless Charging Pad
|Solar Charging (W)
|AC Charging (W)
|DC / Car Charging
|Supports 12V/24V battery, 8A, 1,100W Max
|Supports 12V/24V, 8A
|Maximum Input (W)
|2 years (+ 1 year extension with product registration)
|Smart App Control
In conclusion, both the EcoFlow DELTA 2 and DELTA Max offer impressive features, but they cater to different needs. The DELTA 2, with its LiFePO4 battery and higher cycle life, may be more suited to those seeking longevity and regular use. Its lighter weight also makes it a more portable option.
On the other hand, the DELTA Max’s larger capacity and higher power output make it ideal for powering high-demand devices or for extended off-grid use. It may not be as lightweight or compact as the DELTA 2, but its additional capabilities could outweigh these factors for some users.
The choice between these two models ultimately depends on your specific energy requirements and preferences. Both are solid options in their own right; it’s just about finding which one aligns best with your needs.