The EcoFlow Delta 3 series includes three models: the standard Delta 3, Delta 3 Classic, and Delta 3 Plus. All three share the same 1024Wh capacity and use Lithium Iron Phosphate battery chemistry rated for over 3000 cycles to 80% capacity [1][2].

The Delta 3 Classic is the budget-friendly base model [1]. It delivers 1500W continuous AC output with expandable battery support from 1–5kWh [1]. It includes 13 outlets and supports one 500W maximum PV solar input [1]. The Classic is designed for users who want core Delta 3 performance at lower cost without needing extensive port options or dual solar charging [1].

The Delta 3 Plus is the flagship model with enhanced charging and connectivity features [2]. It charges from 0–100% in approximately 56 minutes via AC input [2], compared to slower speeds on the Classic. The Plus supports two 500W MPPT solar inputs for faster solar charging, enabling dual solar panel connections [3][2]. It offers higher continuous AC output of 1800W with surge capacity up to 3600W using X-Boost technology, more AC outlets than the Classic, and higher-output USB-C and faster USB-A ports [3][2]. The Plus also includes advanced smart home integration and NAS/HID communication features [2].

The standard Delta 3 appears to be a regional variant that may feature different internal architecture or port layout compared to the Plus, though specific distinctions are less clearly documented [2].

Choose the Delta 3 Classic for reliable high-capacity backup power at competitive pricing. Choose the Delta 3 Plus if you prioritize the fastest recharge times, maximum simultaneous device connections, and dual solar input capability for off-grid or backup scenarios [3][2].