24 Volt System Overcharging
The purpose of this test is to assess the controlled output of the alternator in relation to electrical load on the battery.
24 volt system overcharging. That is 24 volts for a 24 volt system. The batteries are 12 volt connected in series to produce 48 volt. Alternator voltage and current 24 v. One bad battery can bring the performance of the entire set down.
I have a solar electric system with a battery back up for power outages it is also grid tie i would like to add a wind turbine to charge the batteries in extended outages with no sun and hopefully wind we normally have low wind but storm outages have lots of wind. Normal absorb voltage for a 24 volt system is 28 8 but it can be higher for some batteries 29 6 for trojan for example. An overcharging car battery will eventually cause damage to the battery and even other electrical components of your car. How to perform the test.
Modern sli batteries are lead acid type using six series connected cells to provide a nominal 12 volt system in most passenger vehicles and light trucks or twelve cells for a 24 volt. Connect picoscope channel a to the vehicle battery terminals. 24 volt charger sizes. A 24 volt charger can be had from a low milliamp output 100 200 500 milliamps up to 40 or 50 amps that will plug into a 115 volt wall outlet chargers above about 30 amps usually require a 20 amp circuit so check.
The reason for this is that nominal no load or resting voltage is about 50 soc so that same voltage under load assures the battery will not be below that level. If you have a two wired alternator you only have one 24 volt. While the engine is running most of the power is provided by the alternator which includes a voltage regulator to keep the output between 13 5 and 14 5 v. Alternators can be set to produce different voltages 12 volts is the most common for cars but on larger vehicles a higher voltage is required.
If you are showing something like a 4 volt charge on a 6 volt golf cart battery you have a bad battery and will want to replace it. You should be particularly concerned if your car battery is charging more than 15 volts. View connection guidance notes.