Can you tell me how to charge my batteries for my daughters new tinkerbell 6 volt -ride-on

Sounds like the battery is shot. All batteries should be charged up even when they are not in use. I charge my lawn tractor battery about once a month in the winter time.
If you let them run down not only will they die but they will freeze and burst in cold weather.

It sounds like your alternator is not charging the battery. Fit a new battery remember to undo negative lead first to remove and fit positive lead first to refit the battery. When the new battery is filled please charge it using less than 1 Amp DO NOT use a car charger or try to jump start it. Your new battery should show 12.5 to 13 volts on a meter for a 12 volt system and 6.3 to near 7 volts for a 6 volt system. Start the scooter and check across the battery terminals your meter should show about 14.4 V for 12 volt battery and about 7.5 V for a 6 Volt one. No voltage increase means your charging circuit is not working. Either the alternator or rectifier(regulator) are not operating correctly. Worst case scenario is both units dead.

Check the charging voltage at the battery with the engine running, it should be about 14 volts if you have a 12 volt system or 7 if you have a 6 volt system. The voltage should be about 20% above the normal battery voltage with the engine running at about twice the idle speed, to charge it.

a lawn mower battery is only good for a couple years when keeping it charged and testing voltage doesn't tell you what is has for amps is the volt meter read more than the off voltage while running then it works they only have a 4-7 amp charging system

Actually I did it successfully over the weekend with a Sears 6/2 amp car charger. First I removed the battery caps and topped the cells off with water. Then I set the charger on 6 amp for approx. 4 hours. I monitored it and as water began to overflow I suctioned it off. The result - a very happy grandson riding his Gator

if its a new battery it could be as simple as it wasn't charged when you purchased it, If it was charged and your mower isn't charging it, the power source to the battery from the mowers motor isn't working properly,, not knowing if its a 12 or 6 volt system you need to check the battery ,, see which one it is,, using a multimetter ( if its 12v ) check the battery after you charge it with an outside source ( battery charger) you would have a reading of 12-12.5 volts on a normal check,, then start the mower, and check the battery as its running,, you should get a reading of 13-13.5 volts minimum, if your not, the alternator or magneto isn't working properly, if you do show the increased voltage at the battery connections, then you need to clean the contacts since the charge isn't reaching the actual battery

The battery is 12 volts and to charge use a 2-10 amp charger.

check the battery with a multimeter and see if its showing 12 volts or more, if it is showing volts but not 12 or more then put it on the charger for about 8 hours, then check the battery again if it still hasn't went up check the voltage of the charger with the multimeter and make sure that the charger is putting out 13.8 volts or more, iif it isn't then you need a new charger, if it is then you need a new battery

check the alternator is putting out charge !
use a volt meter & rev motor a little to see if volts increas if it doesnt then get a replacement

Get a 2 amp charger and charge the battery fo 3 hours or so. While the battery is charging,check the fuses and check the wiring harness connections between the flywheel and the battery.

Start the bike and rev it up. Use a DC voltmeter to check the battery voltage while running. The voltmeter should read 14+ volts. If not then there may be a problem with the stator.

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