Ansmann AC/DC Delta 3 Charger Ultra fast charging.
This intelligent charger is designed to fully control the charge state of the battery pack, so it never overcharges.
The Ansmann AC/DC Delta 3 Charger detects when the pack has reached full capacity. When the battery is fully charged, it will automatically switch from the fast charging current to a trickle, to keep the battery pack full without overcharging it.
It also features a safety timer of 90 minutes, which switches the current to a trickle at this pre-determined time.
This is electronically controlled on plugging the battery into the charger.