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🔐 Power your smart lock with confidence—never get locked out of convenience!
The NASTIMA Security Rechargeable Battery is a high-capacity 10500mAh Li-ion replacement battery designed specifically for eufy smart locks and Smart Drop devices. Featuring a stable 3.7V output, USB fast charging with a clear LED indicator, and advanced safety protections, it guarantees long-lasting, reliable performance. Compatible with multiple eufy models, it offers a seamless swap-in solution backed by a 35-day money-back and 1-year service warranty.
| ASIN | B0DQPS7RDS |
| Antenna Location | Video smart lock |
| Battery Capacity | 10500 Milliamp Hours |
| Battery Cell Composition | Lithium Ion |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 170 Grams |
| Best Sellers Rank | #324 in Home Security Systems |
| Brand | NASTIMA |
| Built-In Media | 1*Battery+1*USB Cable |
| Compatible Phone Models | Eufy S330 S230 S220 E330 Video Smart Lock 3-in-1 and Smart Drop |
| Customer Reviews | 4.3 out of 5 stars 74 Reviews |
| Item Dimensions | 2.35 x 0.85 x 3 inches |
| Manufacturer | QUANZHOU MELASTA NEW ENERGY CO., LTD |
| Model Name | EF37-LI1050-NA |
| Model Number | EF37-LI1050-NA |
| Number of Batteries | 1 12V batteries required. (included) |
| Recommended Uses For Product | Video smart lock |
| Reusability | Rechargeable |
| UPC | 782003392732 |
| Unit Count | 1.0 Count |
B**N
Battery works as it should and then some.
this battery works great! too bad eufy won't make a few extra battery covers for holding the battery in. such a great lock, why is the cover so cheap with only two plastic tabs on a door that has to open every other day to charge. Oh, well... This was about the battery, not the @eufy The battery charged right up. Not sure how fast, as I didn't need it right away and let it charge until I did. I charged it sveral times before selling the house and had no issue whatsoever with the battery itself.
V**N
Excellent replacement for original battery
Excellent replacement for the original battery. With the smart locks on my Disney cabins I need to make sure the batteries are always functional while I’m not there and this really helped. Now my helper just swaps out batteries from fresh charged and they last about 1-2 months between changes.
H**.
Quality
Easy use, good quality and affordable
S**N
Doesn't last as long as the genuine Eufy batteries, but nice that it's USB-C instead of micro USB
Doesn't last as long as the genuine Eufy batteries, but it's nice that it's USB-C instead of micro USB
F**N
Solid battery
Arrived as advertised. Work great.
J**T
Ok but could be better
Does not last as long as the Eufy battery
A**R
Work perfect
Work perfect
D**N
Great value!
Great product and easy to install! Great value for the money!
Trustpilot
2 months ago
2 months ago