I purchased this for trickle charging the battery on my tractor. It tends to sit (covered) in a sunny spot, and, it is an electricity hog when I use the lights on it. It has worked well for about a month maintaining the charge on the battery, making up for the poor output of the old generator on the tractor, and boosting the starting and lighting power. This unit provides a constance 0.15 amp charge. I have a few concerns. I hooked up a high quality voltmeter to it and the charge read somewhere between 16 volts and 18 volts (off the scale on my volt meter). Under a load (once connected to the battery) it may read a lower voltage but I have not measured it under load.
My other concern is that this does not have any kind of voltage regulator.When your battery reaches its full charge there is a possibility of overcharging the battery.
In any event, it charges a battery over a period of about four days and keeps it charged.
A real plus to this unit is that it is accompanied by an excellent array of leads. It has an extension cord that is about 8 feet long. There are four types of leads enclosed with the package.
The first are bare wires ( and - (red
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