There was quite a bit of technology packed into this cheap digital charger as it has charging units regulated by microprocessors with advanced software. In case you forget to take your electronic device out of the charging unit you can stay relaxed over the fact that this cheap digital charger has spark-free connections, over-temperature protection, and the ability to diagnose battery faults and failures to diagnose and prevent overcharging.
There are various models of digital charger from various renowned brand available that is fully automatic has multi stage performance with different modes of charging. At the Electronics fair I was overwhelmed by the large varieties of cheap digital chargers available in the market each with unique features that made them useful for people who's lives are dependent on technology to a great extent. As the saying goes that man's actions are confined to the fruits of his children in a similar manner technology would be a great boon if we use their products in a useful manner.