The VIpower range of sealed lead-acid battery chargers have a 3 stage charging algorithm allowing them to be left permanently charging the battery without detrement to the battery & ensuring it is always ready for use. This is a good quality battery charger suitable for charging sealed lead acid batteries (20-40 Ah capacity) overnight in a safe, effective manner. Suitable for 12V Vehicle batteries, classic car batteries, Marine, Leisure applications & industrial use. Charger Benefits: ♦ Extends battery life ♦ Wide input voltage for world wide use ♦ Small physical size ♦ 3 Stage algorithm ♦ Fast recharge time ♦ CE approved for use in Europe