Checking 12v-10Ah Motorcycle Battery: Using Multimeter to Test Voltage & Determine Battery Health

Question

Hello, I did not know exactly where to ask this question, but for someone who knows the topic, it will be a second for a layman longer -) I do not want to buy a second battery for free, but I want to check it with a meter, for example, whether it is good or not suitable, it is a 12v - 10Ah...

kavma · Answer

Hello
If you have a voltmeter, fasten it to the battery terminals and adjust it so that you can see the indication when you start the start-up.
If, during the start-up, the battery voltage drops to a value below 10V, the battery must be replaced.

krzysztof 7 · Answer

The easiest way if you have a meter, connect the plus of the voltmeter to the plus of the battery through the voltmeter readings. minus the voltmeter to the minus of the battery. Turn the starter and see what voltage you have like 10 - 11V that's good.

ma3-4ysz · Answer

The first thing is to measure the battery's open circuit voltage - that is, what it is without load and write what it is.

The battery may simply be undercharged. If you have access to a multimeter, set it to a constant voltage range of about 20 V (or more than 12) and the black cable to the battery minus and the red cable to the plus and write how much the meter showed. It should be around 12V.

Then do the same on the attached starter: hook up as before, spin the starter and read the indication of how the starter will spin.

Write how much will be. The voltage should drop slightly, if it drops too much, it may mean that the battery loses capacity as a result of operation.

Check it at the beginning and write the results, then we will think about what to do next.
greetings

Gerri · Answer

If the starting voltage drops too much, it may also indicate excessive mechanical resistance - e.g. on the starter bushings.

vcc · Answer

Everyone would only measure the voltage at start-up, just like a colleague, ma3-4ysz, measure the charging voltage, because if it is low, the battery will be undercharged and the starter will always turn poorly (checked on the C-330 tractor). Also check the quality of the cable connections.

Błażej · Answer

You should also check the battery leakage. You disconnect it from the receivers, charge it fully, measure the voltage and put it aside for 24 hours. Then you measure the tension again. When it dropped significantly (above the volt), the battery tends to lose electricity and rather ends its life.
And if you check the battery under load, it is rather not the starter, because it may actually have resistance to work and give a false idea about the condition of the battery. Better to make yourself a load of light bulbs. You can then check exactly what is happening with the battery.

fantomek · Answer

Hello again, colleagues, I know what and how, it looks like the battery is fully operational, the voltmeter readings are as follows: 12.5V when idle, then I pumped his car wheel again and showed 12.5V, do you recommend doing something? I will add that the battery is maintenance-free. But I came to another probable cause of the motorcycle not starting, namely steel around a month, maybe the fuel has evaporated and you need to transfer the carburetors just by setting the fuel knob to the PRI position - I haven't done it yet, but I will let you know what and how ... my fears were caused, first of all, by this that the motorcycle did not start, and secondly that it seemed to me that the starter was turning poorly ...

ma3-4ysz · Answer

As the month was unloaded, it is no wonder that his enthusiasm for work disappeared.
When I had a car battery with instructions, it probably wrote that if the battery is disconnected, it should be charged every 3 months - there is a phenomenon of self-discharge, and if it was installed in the car, then the power consumption of some devices should be taken into account (alarm, etc.)
The battery is not a super tight electric bulb. I recommend reading if you are curious about the issue of sealed lead batteries (I can't dig out the link, so I give the files)

Checking 12v-10Ah Motorcycle Battery: Using Multimeter to Test Voltage & Determine Battery Health

Post #1

Post #2

Post #3

Post #4

Post #5

Post #6

Post #7

Post #8

Post #9

Didn't find an answer? Ask Artificial Intelligence

Topic summary