Trickle charger
A trickle charger, on the other hand, will charge no matter whether the battery is fully charged or not, so it needs to be connected and disconnected periodically. Trickle chargers will work to keep the battery charged, if used once a month or so for a day or two, but the float chargers can be left connected indefinitely without potential harm to the battery.
Στην πράξη σημαίνει ότι δεν σταματάνε ποτε να δίνουν φορτίο στην μπαταρία ούτε και όταν θεωρητικά είναι γεμάτη.
Float charger
A float charger differs from a trickle charger in having circuitry to prevent overcharging. It senses when the battery voltage is at the appropriate float level and temporarily ceases charging; it maintains the charge current at zero or a very minimal level until it senses that the battery output voltage has fallen, and then resumes charging. It is important to note that the appropriate float voltage varies significantly with the construction of the battery and the ambient temperature. With the appropriate voltage for the battery type and with proper temperature compensation, a float charger may be kept connected indefinitely without damaging the battery. With a 6-cell (nominal 12V) lead-acid battery the correct float voltage drops by about 0.15 V for a 5°C rise in ambient temperature. Not compensating for this will shorten battery life either by over- or under-charging.
Αυτο στην πράξη σημαίνει οτι αν δεν υπάρξει μια διακύμανση στα βολτ σεν δίνει φορτίο στην μπαταρία, διακύμανση όμως μπορεί να υπάρξει και απο μεγάλη διαφοροποιήση θερμοκρασίας.
Τουλάχιστον οι φορτιστές που το υποστηρίζουν κόβουν την φόρτιση όταν λένε οτι είναι γεμάτη η μπαταρία.