Take the battery out and test it with a multimeter.
to see how strong your battery is
You can take it to a battery place and they can test it under a load.
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 load test
13 test batteries
A battery charger can be used to test a battery if the charger includes a voltmeter, so you can read off the voltage. Note: A battery charger is designed to be used only for rechargeable batteries. It can be very dangerous to try to use a battery charger to test or recharge normal non-rechargeable batteries.
give me kinds of battery...
Battery capacity tester
Have a shop load test the battery.
Put the red test lead on the positive and the black test lead on the negative post of the battery and see the result.
you can use a test software or look at the back of the battery, the battery information is on the back of the battery