Battery not charging - 1990 Acura Integra Hatchback

Is the battery fully charged??

I would leave it overnight. That small a charger will have to work hard to charge the battery. Replace battery and save yourself battery problems in the future.

Make model and year, and what have you checked so far ?
Have you had the battery tested ? Alternator working ?

2003 taurus not starting the lights on dashboard not coming on.windows wont go up and wont crank ..anyone know what to do ..please

A new battery should have approx 12.62 fully charged
It could be slightly more
If you ever see 13 volts, on an old battery, it is gone

You need a min of 12.5, to do any testing of your vehicle, or you charge it
It should hold 12.5 or more for 3 or 4 weeks,then charge, if you let the truck sit
unused.

Sounds like your alternator isn't charging your battery.

Alternator is what charges the battery. The alternator isn't putting out enough of amps to charge your battery and you will get a light or gauge reading that the voltage is low.

A working alternator can try to charge a bad battery but won't. Have the battery and charging system checked with a machine. Also note: your alternator is not designed to charge a battery. It is made to maintain the state of charge present in the battery. If the battery has been drained, then jumped, the alternator can put a surface charge there but will never fully charge the battery...This is only done with an external battery charger. Not doing this will over-work the alternator and shorten battery life!

Check the alternator and battery clemmas/wires coming from alternator. It looks like no charge from it coming to battery. If it is second battery already this is the sign. You can do it free of charge at autozone store. But any way as a temporary solution you can buy battery charger ($25 walmart) and charge the battery back if battery is damaged you will see it right away (it wont be charging). After you charge battery back start the engine run it for 30 minutes (if Alternator OK it is enough to charge battery back), stop and start again. If no start alternator is a problem.
Good Luck

it is the alternater as the alternater is responsable for charging the battery when the battery need charging.It should run you about 60 dollars fro the alternator plus about 50 for the labor