Voltcraft charge manager 410

CM-410 on the left and IPC-1L on the right

Well, as usually, I will only add my personal opinion and the information that usually is not provided.
Some time ago, I bought Voltcraft IPC-1L and wrote about it. Since then (about 3.5 years) I remain more than satisfied from the product.
Recently, I bough some cheap rechargeable batteries (not the ones shown on the picture) that for some reason stopped charging before they ware completely full. I thought that the charger might be broken or about to get broken... So, I bough an upgrade: Voltcraft CM-410. There is (perhaps) better version CM-420 but I was uncertain about some small details.