Received yesterday. Brought, put on charge a set of batteries. Batteries are charged. Today I decided to check the test mode. I put in the battery. It shows 47%. Surprised. Pulled it out, put it back in. Showed 67%. Even more surprised. Twisted a little inside the charger. Showed 99%. Other batteries showed the same uncertain results: sometimes 40, sometimes 70, sometimes 99%. I have a complete misunderstanding of what is happening. Downgraded for this only.