It is a meter with a high wattage resistor connected parallel with the meter that drains power from the battery while it is measuring the voltage it is used to test the condition of the battery if the condition is good there will not be a large voltage drop while testing the battery
chemical reactions take place in battery which reduce the charge.
You need to use a blocking diode wired in series to prevent battery discharge via the solar panel at times of no sunlight, eg nighttime.
It doesn't actually drain the battery, but without a working alternator to recharge the battery it will only discharge as the car is operated.
a deep cycle battery i a battery that you can charge and discharge over and over without harming the cells in the battery unlike a normal battery . deep cycle batteries are normally used in boats
And analog multi-tester will have a meter, battery, and switch. The meter is the part that can show the conversion of analog to digital or simply act as an analog display. The battery is the power source and the switch is the part that allows you to select the specific function of the multi-tester.
take the car to a repair shop and have them put a battery tester on it. it may be the alternator or the battery the tester will tell
You can test your battery with a battery tester. If you don't have a battery tester, you could take the battery to Advance Auto Parts and they will test it for you for free.
Battery capacity tester
Test the battery with a tester.
The charger can test the % left in the battery and the voltage remaining. It can also test a car's alternator.
A battery tester will show test how much current is coming from your batteries. It will allow you to test the life left in your battery. They can be purchased in most large retail stores. I hope this answers your question.
Try a battery tester
You can use a wire tester to check for a ungrounded wire. Attached the wire tester to the battery posts. The tester will show you if the ground is weak or strong.
To buy a battery tester needs a store or a shopping center to buy it, also can be purchased in stores ebay and amazon are very good porcierto for its variety of products.
Use a battery maintainer.
You can buy a battery tester to check how much energy is left in staples or best buy. You can also check BJs if they have any left.
Either there is a dead cell in the battery or something is drawing power from the battery. Even a good battery will slowly discharge over time. Normally it will take months.