REACELL S330 Battery Compatible with eufy S330 3-in-1 Video Smart Lock, Compatible for eufy E330 S230 S231 Smart Lock, Smart Drop, for eufyCam S4

On time and good seller

Well designed

+ USB C charging + Compatible with my door lock - Dies extremely quickly (a few days) with minimal door activity I basically only use this now while the original battery is charging. Pretty disappointing.

Bought this to rotate whenever the original battery needs charging. It lights up red when charging and shows when charging is done. It seems to have good battery life and has no compatibility issues.

I finally installed my Eufy video doorbell (and also smart locks which use the same battery). This battery was easy to charge - it charged faster than the batteries supplied with the original locks. It fits perfectly within the battery space and I'm actually using this right off the bat, while using the original battery as the spare. Seems to be holding up well! I wish there was a way the Eufy app could tell us the battery percentage.

I always hated the fact that the lock full functionality was down as I charged the one battery provided with the smart lock. The lock is my main deadbolt for my front door. I got the battery with about an hour and a half to charge to full out of the box. The battery includes a USB-A to USB-C cable. The factory battery is charged with USB-micro, so it's nice to see the USB-C as most of my new devices use USB-C. There is one battery status LED light lit when charging. Form factor is a perfect match to the size of the original battery and it fits perfectly in my S230 Smart Door lock and reads fully charged when connected. The one thing I truly like about this is that I can have one fully charged battery at the ready to change out when the one installed gets low.

I have a Eufy S230 smart lock and the battery was no longer holding a charge for longer than a day. This replacement works flawlessly and I no longer and annoyed by the lock yelling at me that the battery is low. It looks identical to the original battery except it is black and not blue. Charges with USB-C cord.

I was very disappointed in the original battery for my eufy dropbox. It only lasted about six weeks. When I needed to pull it out to charge it, I had to do it overnight to make sure that I didn't miss any deliveries. At that point, I knew I wanted another battery, so I could just swap them out and charge at my own convenience. This new battery fits perfectly and seems to be lasting longer than the original, if the in-app battery indicator is accurate. It has the added benefit of being USB-C, whereas the original one is micro-USB.