What’s the best time to recharge the battery? Do we have to wait until 20%?
I do all of mine at 40% and charge to 85%. It might be overkill, but I am getting good battery life and want to preserve the life of the batteries. Taking it to 20% or charging to over 85% will reduce number of cycles you can get from any lithium battery. Most important is to time your charging cycles so they never run low on charge when the temps are below 40F. Eufy limits charging below 40 so the cells don’t develop internal damage. If you wait too long to charge, and temps drop, you will be forced to take your cams down and bring them inside to charge.