Larger Capacity, Longer Life Extends the usage time (up to 18 days) of your Tapo battery-powered cameras and video doorbells, freeing you from frequent charging. Works with Tapo Battery Cameras & Video Doorbells Enjoy solid performance with Tapo C42, Tapo C4, Tapo D23 . More products will be supported in the future. Secure Charging with 6-way Protection Get your battery fully charged in around 5 hours with multiple safeguards such as over-charging protection, short-circuiting protection, over-heating protection, and more. Quick Release & Replacement Quickly release or install the battery within minutes. No Memory Effect Premium lithium ion cells offer fully usable capacity and a longer battery life without memory effect and you can charge it at any time infinitely. * 67mAh Large Capacity-Extends the usage time(up to 18 days)† of your Tapo battery-powered cameras and video doorbells * Compatible with Tapo Cameras and Video Doorbells-Works with Tapo C42, Tapo C4, Tapo D23. More products will be supported in the future * Quick Release & Replacement-Easily release or install the battery within minutes * Secure Charging with 6-Way Protection-Safeguards your battery from being over-charged, short-circuited, over-heated, and more * 5-Hour Charging Time-Get your battery fully charged in around 5 hours with a USB charging cable * No Memory Effect-Made of premium lithium ion cells, Tapo A1 offers fully usable capacity and a longer life without memory effect