A trickle charger is a tool that gives a small quantity {of electrical} present to a battery over a protracted time frame. This may be helpful for sustaining the cost of a battery that’s not getting used frequently, akin to a battery in a automotive that’s not being pushed.
There are a lot of several types of trickle chargers accessible, however the most effective DIY 12v trickle charger is one that’s easy to construct and makes use of cheap elements. One fashionable design makes use of a transformer, a rectifier, and a resistor. The transformer steps down the voltage from the wall outlet to 12 volts, the rectifier converts the AC voltage from the transformer to DC voltage, and the resistor limits the present circulation to the battery.