No power on a fully charged batery why?

The battery is not fully Charged. Please charge for 4 to 5 hours.
The flash light works because it requires lower voltage than drill/driver to work.

Do you also have a good battery that runs the drill well to proof the drill is good, and a volt meter (multi meter)?
I have several cordless tool batteries that show the rated voltage on a meter, and register as fully charged when on the charger, that no longer have any current capacity. They will barely turn the drill and die in seconds. This is a different problem than when freshly charged run fine but lose their charge in a few days or so. That is caused by internal short circuits in some or all the cells from "dendrites", a build-up of small amounts of the cell plates as little branches growing on the plates until they reach the other plate, causing a tiny short circuit. Dendrites can sometimes can be burned off, the way I do it can be extremely dangerous and I do not recommend it. I do it by putting 4 battery chargers in series, giving me an open circuit voltage of 59 volts. I for a no more than 4 seconds connect them to the battery - to - and + to +, with a current in excess of 50 amps. The battery gets hot and could explode, so I do it by reaching around a 1/2" thick poly-carbonate shield. Lacking a shield, i use a power strip to plug the chargers in Have the power strip unplugged from the outlet or extension cord, connect the charger clips to the battery, and from a distance, plug in the power strip just for 2-3 seconds. The battery may be quite hot. I then check the battery voltage, it is usually a bit higher than the voltage rating. I put the battery in the drill and if it makes a few turns, i run it till the drill stops, then charge the battery normally. I use 2 small 12 v chargers that have a 50 amp jump-start setting and two that have a 10 amp rating.
The proper repair is to replace or rebuild them.

depending on the model of drill, the indicator (if not colour / state changing) only indicates that the drill is connected to power.

hence with no indicator of a full charge, if you refer to the user manual for this drill it should tell you how long the drill should be charged for.

First, you should know your battery is a Ni-CD / NI-Mh or Li-ion battery. If it is a Ni-CD / NI-Mh battery, please fully discharged and fully charged it to prevent "Memory effect".

If it is a Li-ion battery, please charge it before you use it.

Please keep in mind that, please fully charge a battery when you store it. And, charge it again every two months.

If your old battery is dead, you can replace it with a new one. Ryobi Power Tool Battery

the green light or LED indicates or sign the the batery you are charging is already full,.so if it doesn't happen to switch ,it means that your baterry is weak and can not reach anymore the amount of current or amperes needed thats why it cant go to the highest peak of charging just like when it is new.Replace your batery and the green light will switch again if it is fully charge.

the battery's are most likely dead, (like the real dead) after many uses of rechargeable battery's they slow stop holding charge at all, make sure when you get a new rechargeable battery you fully charge it once and fully discharge it once this will increase batterys life time

Does the drill do anything? Check in the cavity where the battery goes and make sure there is nothing there to prevent the battery contacts from connecting with switch. I take it the charger indicates the batterys are fully charged. If you cant see anything obvious I would take it back and get a replacement.
Dave

batteries have a charge memory in the, when you purchase a new battery the best thing to do is to fully drain the battery before charging it up, this will tell the battery that it needs full charge, if you charge the battery before this it will only charge the battery to a certain percentage.
what you need to do now is find a way to fully discharge the batteries

kind regards