Whole-home backup batteries
51 results41 in stock
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![EcoFlow DELTA Pro 3 4096Wh Smart Extra Batteries – [Multi-Pack] EcoFlow DELTA Pro 3 + 2 x DELTA Pro 3 Extra Battery](/media/products/421/3122e9246d0095f9-128.avif)
12,288 Wh
3.4 kWh per $1,000, the best value in the category gives 3.4 kWh
2 storesSave $2,590.01
$291/kWhfrom $3,578.99See 2 stores
$291/kWh
from $3,578.99
![EcoFlow DELTA Pro 3 4096Wh Smart Extra Batteries – [Multi-Pack] EcoFlow DELTA Pro 3 + 3 x DELTA Pro 3 Extra Battery](/media/products/1975/a8e1bd7b3f2a570e-128.avif)
16,384 Wh
3.1 kWh per $1,000, the best value in the category gives 3.4 kWh
![EcoFlow DELTA Pro 3 4096Wh Smart Extra Batteries – [Multi-Pack] EcoFlow DELTA Pro 3 + 4 x DELTA Pro 3 Extra Battery](/media/products/1976/38aab7c68ff5d6f0-128.avif)
20,480 Wh
2.9 kWh per $1,000, the best value in the category gives 3.4 kWh
![EcoFlow DELTA Pro 3 4096Wh Smart Extra Batteries – [Multi-Pack] EcoFlow DELTA Pro 3 + 5 x DELTA Pro 3 Extra Battery](/media/products/1980/631a098cead283e5-128.avif)
24,576 Wh
2.7 kWh per $1,000, the best value in the category gives 3.4 kWh
![EcoFlow DELTA Pro 3 4096Wh Smart Extra Batteries – [Multi-Pack] EcoFlow DELTA Pro 3 + 6 x DELTA Pro 3 Extra Battery](/media/products/1982/f8000f1c66af0998-128.avif)
28,672 Wh
2.7 kWh per $1,000, the best value in the category gives 3.4 kWh
20,992 Wh
2.5 kWh per $1,000, the best value in the category gives 3.4 kWh
30,720 Wh
2.5 kWh per $1,000, the best value in the category gives 3.4 kWh
30,000 Wh · LiFePO4
2.4 kWh per $1,000, the best value in the category gives 3.4 kWh
24,576 Wh
2.4 kWh per $1,000, the best value in the category gives 3.4 kWh
55,296 Wh
2.4 kWh per $1,000, the best value in the category gives 3.4 kWh
49,152 Wh
2.3 kWh per $1,000, the best value in the category gives 3.4 kWh
24,000 Wh · LiFePO4
2.3 kWh per $1,000, the best value in the category gives 3.4 kWh
18,432 Wh
2.3 kWh per $1,000, the best value in the category gives 3.4 kWh
43,008 Wh
2.3 kWh per $1,000, the best value in the category gives 3.4 kWh
36,864 Wh
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
26,880 Wh
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
23,040 Wh
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
19,200 Wh
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
30,720 Wh
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
18,000 Wh · LiFePO4
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
11,520 Wh
2.2 kWh per $1,000, the best value in the category gives 3.4 kWh
2 storesSave $767.99
$463/kWhfrom $5,331.99See 2 stores
$463/kWh
from $5,331.99
7,680 Wh
2.1 kWh per $1,000, the best value in the category gives 3.4 kWh
3 storesSave $721.00
$466/kWhfrom $3,578.99See 3 stores
$466/kWh
from $3,578.99
49,152 Wh
2.1 kWh per $1,000, the best value in the category gives 3.4 kWh
24,576 Wh
2.1 kWh per $1,000, the best value in the category gives 3.4 kWh
Results sorted by lowest price per usable kWh. How we rank results