How to check charge of aa batteries with GB Analog Multimeter

have you tested altenator? have you checked battery connections and is there power going to altenator {large cable on rear of altenator) have you tested with multimeter to check is it charging low or not at all or even over charging? should be arounf 14.2 volts.. maybe its charging but battery past its service life? battery fluid level low?

You should be OK to charge the battery for 10 hours at a constant current of about 90mA. I assume this battery is a 3.7v type, with a full charge voltage of about 4.2v (it would be useful to monitor this with a multimeter).
Some useful commentary is here: https://www.sparkfun.com/products/341
Good Luck

As long as the batteries are rechargeable it could take 30 mins to several hours depending on how low the batteries are, the make and their use.

you would be measuring current
you would set the meter to maximum current setting
Then place the leads between the terminals of the fuse for each circuit. with the fuse removed.
so if you have a ten amp fuse you would expect a current either below 10Amp or at 10 amp.
maximum setting of current is in case short circuit to ground causes a huge current drain. To prevent blowing up amp meter of multimeter.
You may wish to put a fuse on the lead of the multimeter to safe guard your meter from blowing up in case you encounter a high current it can't handle.
if via the battery disconnect one lead and put a fused meter lead on the battery and the other lead on the battery cable. look for current drain while car switched off.

NP55 or 65 battery pack which is just aa batteries. Build your own pack with aa batteries and solder them in series and insulate.

Check the battery voltage , check the contacts of the battery. Chek the adapter for any possible current limiting reducing the charge level.If so the charging will not take place and will result in this indication.
If possible measure the charging voltage/current using a multimeter with an external battery or a device. If the battery is not charging and the camera is not getting powered ON then a cross check on the battery or adapter will be useful

have you checked the charging of the device. if its charging, then if its possible take out the batteries and check its voltage levels using a multimeter. if the levels are lower than the defined and fast dying then replace the batteries

No, the charger is only usable to charge the rechargeable NiMH or Li-Ion battery which comes with the radio. Attempting to charge Alkaline rechargeable batteries with this charger could cause the to expode. If your charger is not charging the batteries which came with the units, it could be you do not have the charger cord end plugged in all the way, or the batteries dropped below the initial charge level by setting on a store shelf too long. Most TalkAbouts come with a cradle style charger to hold the radio, and a possible plug to plug into the charge hole. Check all connections, and clean any battery/charger contacts with a pencil eraser. To re-initialize the batteries you would need to attempt 3-5 charge cycles by charging for 8-10 hours, then letting the battery rest for 8-10 hours, repeating 3-5 times as needed. If this does not bring the battery back to life, you need to replace the batteries.

Get a multimeter from harberfreight and check the battery. It should read 12 volts if less battey is bad, jump start the car and check it again, it should read 13 / 14 volts if not its the altenator. Good luck

well I know you can buy the battery in them from a third party but Not to sure if its really worth it. I do know there is and issue with these if they sit around for a while and not used it seems like the battery dies even more and then you can not charge it. If you come across not being able to charge it, what I did was take it apart and apply a 1.5 or a AA battery battery to the leads. You will need a multimeter to determine which is negative and positive but what I did was tape some 22 guage wire to the negative and positive ends of a AA battery and apply the positive of the AA to the positive of the battery in the treo and negative to negative. You only need to hold it there for 3-5 secs and then you should be able to charge it.