Is trickle charging harmful to batteries?
Many battery manufacturers do not recommend long term ( months at a time) trickle charging. If trickle charging is used then the charge rate should be very low or only intermittent. The best smart chargers will only send an occasional pulse charge to the battery once it is charged. They do not apply a continuous low rate of charge. Some battery resellers state that applying a continuous trickle charge of about 1/10th the battery’s capacity is not harmful. However, we have not seen any battery manufacturer condone the practice. It is better to fully charge batteries and then store them fully charged in the freezer than to leave them on trickle charge for very extended periods of time.
