battery has 12v but wont start

Troubleshooting a 12V Battery That Won’t Start: What to Do When Your Vehicle Won’t Start

If your vehicle won’t start, it can be a frustrating experience. Fortunately, there are a few steps you can take to troubleshoot the issue and get your vehicle running again. First, check the battery. Make sure the terminals are clean and free of corrosion. If they are corroded, clean them with a wire brush and baking soda. If the terminals are clean, check the voltage of the battery with a multimeter. If the voltage is below 12V, the battery may need to be replaced. Next, check the starter. Make sure the starter is receiving power from the battery. If it is not, check the starter relay and the starter solenoid. If these components are working properly, the starter may need to be replaced. If the starter is receiving power, check the spark plugs. Make sure the spark plugs are clean and free of debris. If they are dirty, replace them. If the spark plugs are clean, check the spark plug wires. Make sure the wires are connected properly and that there are no breaks in the insulation. Finally, check the fuel system. Make sure the fuel filter is clean and that the fuel pump is working properly. If the fuel filter is clogged or the fuel pump is not working, the fuel system may need to be serviced.

Series	Lithium Voltage	LiFePO4 Voltage
1S	3.7V	3.2V
2S	7.4V	6.4V
3S	11.1V	9.6V
4S	14.8V	12.8V
5S	18.5V	16V
6S	22.2V	19.2V
7S	25.9V	22.4V
8S	29.6V	25.6V
9S	33.3V	28.8V
10S	37V	32V
11S	40.7V	35.2V
12S	44.4V	38.4V
13S	48.1V	41.6V
14S	51.8V	44.8V
15S	55.5V	48V
16S	59.2V	51.2V
17S	62.9V	54.4V
18S	66.6V	57.6V
19S	70.3V	60.8V
20S	74V	64V
21S	77.7V	67.2V
22S	81.4V	70.4V
23S	85.1V	73.6V

If you have taken all of these steps and your vehicle still won’t start, it may be time to take it to a mechanic. A professional can diagnose the issue and get your vehicle running again.

How to Diagnose and Repair a 12V Battery That Won’t Start

If your 12V battery won’t start, it’s important to diagnose and repair the issue as soon as possible. Fortunately, there are a few simple steps you can take to troubleshoot and repair the problem. First, check the battery terminals for corrosion. If the terminals are corroded, clean them with a wire brush and baking soda. Make sure the terminals are securely connected to the battery. Next, check the battery’s voltage with a multimeter. If the voltage is below 12V, the battery is likely dead and needs to be replaced.

If the voltage is above 12V, the battery may be able to be recharged. Connect the battery to a charger and charge it for several hours. If the battery still won’t start, it may need to be replaced. Finally, if the battery is still not starting, check the starter and alternator. If either of these components is faulty, they will need to be replaced. By following these steps, you can diagnose and repair a 12V battery that won’t start. With a little patience and the right tools, you can get your vehicle running again in no time.