Add to favorites
12000mAh Rechargeable Battery for eufy Security S220 S230 S231 S330 E330 3-in-1 Video Smart Door Lock E31 and Smart Drop, T8520 T8520S T8520J11 T8531 E8531JY1 T8520T11 Security Smart Lock
Brand: Fancy Buying
Condition: Used
$2849
$2999
-5% Save $150
Updated: 4 days ago
Description
Parameters: 3.7V-44.4Wh/12000mAh. Battery capacity of 12000mAh battery ensures that your security system runs uninterruptedly! Upgraded thickened battery cell, it can work in the temperature range of22°F to 158°F(-30℃ to 70℃).
Compatibility with Rechargeable S330 battery are Fully compatible with eufy Security S330/E330 3-in-1 Video Smart Lock, S230/S231/S220 Smart Lock，Smart Drop(T8790),Security Smart Lock Touch（T8520T11）,T8520 T8520S T8520J11 T8531 E8531JY1
Compatibility with eufy security S330 S230 S220 E330 3-in-1 Video Smart Lock, Smart Lock Touch & Wi-Fi (Black/Silver, Model T8520) and Smart Drop, Smart Delivery Box.
Large Capacity: 12000 mAh ultra-large capacity rechargeable battery ensures long time continuous operation.
Easy to use: You don't need to remove the smart lock from the door, just take out the battery to charge the battery. Input: 5V/2A
Multiple circuit protection: over-charging, over-power,short-circuit, high-temperature,over voltage and battery PTC protection
Package Contents: 1x rechargeable battery, 1x USB charging cable.
1 year Warranty. If your have any problem,please contact us through Amazon, 24 hours help you solve the problem!
Applicable models: For eufy T8520 / T8520S / T8520Q2522 / T8531 / T8520J11 / EUT8520J11 / E8531JY1 / EUE8531JY1 / T8790 and SmartDrop
Compatible with eufy S330 S230 E330 S231 Video Smart Lock 3-in-1 and Smart Drop, completely replace the original battery.
Compatible with eufy S330 S230 E330 S231 Video Smart Lock 3-in-1 and Smart Drop, completely replace the original battery.
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0ffgm1k3b
- Model:
- T8520S
- Country:
- US
- ASIN:
- B0FFGM1K3B
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $2 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Fancy Buying products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.