適用於 Familock S3 和 S3 Max 的充電式鋰電池

The 1,500 mAh capacity has been a lifesaver—my lock's battery was down to 20% and this thing swapped in without any tools needed. It's been three weeks and the charge level hasn't budged, which is way better than the old battery that drained monthly.

Installed it in about two minutes and the lock's been running quiet and steady ever since. The 1,500 mAh capacity is plenty — I've gone over a month without worrying about the low-battery warning.

My lock started beeping at 11pm, and this 1,500 mAh battery was here in two days—swapped it in, and the lock hasn’t missed a beat since. The fit is perfect for my S3 Max, and honestly, the peace of mind is worth every penny.