Batteries don`t last very long.Also there is a small round battery in the bottom & was wondering what its for?

Question edited for clarity, and add MAKER, so few words, so many spelling mistakes!

Lithium batteries aren't rechargeable. Your small round CR2032 battery lasts 8 years. It is the same battery in a computer motherboard and easy to find in any pharmacy.

REPLACING 3V LITHIUM BATTERY The Auto-set time memory is maintained by a lithium button cell battery, model CR2032. The expected life of this battery is about 8 years. Be sure that the 2 "AA" batteries in the clock are fresh. The MODE switch (8) must be in the RUN position when replacing this button cell battery. This battery is located in the small round battery compartment on the rear of the clock secured by a screw. Open the battery compartment (3) with a screw driver and replace the CR2032 lithium battery observing the polarity. Then close the compartment securing with the screw.

https://cdn.shopify.com/s/files/1/0035/7443/1790/files/40222s-40222b_1.pdf?v=1594066127

..

I don’t know your location or weather conditions however I use 12v and it’s length: 20.75"
Width: 8.19"
Height: 7.93”
You can find lots of batteries that fit the tractor rather 6v or 12v but avoid totally using car battery thecdo not last and cause lots of headaches. Good luck also with the cost they are very expensive compare with automobiles batteries. God bless

it can be--their is no definite life span of a battery because everything has a different draw of power a simple watch can last years while more complex such as date/stop watch /backlight etc will draw and kill battery quicker

There's a small half-round clip at the bottom, open that, then you are able to lift the battery cover and swap batteries.

Take your batteries out, and take them down to .a battery shop. Have the battery load tested, Reading the voltage under no load conditions will not tell you much, normally the batteries voltage gives you its state of charge. These batteries will show a full charge at no load, as soon as you put any load at all on the voltage drops off and you don't have much in amperage output. The amperage is what is important when you right down to it. When load testing your battery they will use an instrument that they punch in the cranking amps. The instrument will look for the voltage drop off at a load of what ever amp value you punched into the instrument. The instrument will give you a pass\fail indication for the cranking amps value the technician punched into the keypad. There can be a problem when load testing batteries. The technician doesn't key in a amperage value, This is what happened to me. The instrument when no value is entered will use a default value, Say the default amperage is usually set at around 200 Cranking amps. My technician was either rushed or just being lazy. He set the load tester to use the default values, my battery passed with the tester set up the way it was. My battery is a 35 amp\hr battery and puts out 480 cranking amps In actuality my batteries weren't putting out nearly that much. It would put out 265 cranking amps for about 2 seconds then die. He told me the batteries were good. When i brought the batteries back to him
i didn't let him take them into thee back room. THIS TIME HE DID THE CHECKS OUT IN PLAIN SIGHT OF ME. I asked to do a comparison between my batteries and new ones. We had to retest a number of time in order to find the upper limit of the new batteries. As it turned out my batteries were bad and all my problems disappeared with my old batteries. NOTE, scooters use deep cycle batteries only Glass mate batteries if you want to take your scooter on a flight.

Now if you had your batteries load tested and you know their good, its got to be the charger thats malfunctioning. Check the charger connection points make sure there tight. One connector should go to the negative battery terminal, the other connector should go too the positive terminal and read +24v. Make sure the connections are solid.

How long does it take to charge a battery? There are allot of variables to this but generally speaking if a charger is a four amp charger and you got a 35amp/hr battery it will take roughly 8 hrs to charge. Batteries typically don't like to be cold. My batteries are 35amp/hr my scooter will go 25 miles @ a max speed of 6 mph. The run time is roughly 5.5 hrs with a draw of about 6amps

There isn't room onboad for bigger batteries. But you can cheat by constructing a two wheeled trailer just big enough to hold two more batteries they can be as big as you want. When the on-board batteries get low flip a switch and your running on out-board batteries. Be sure the trailor is conntructed to be as lite weight as possible. you can buy trailers for scooter. I did it the lazy way, I wired my external batteries directly to my internal battery terminals due to amp loading.If they are lets say 50amp to your 15amp on- board batteries you are going to go way more miles than with15amp batteries. WARNING this setup you don't hook fully charged big batteries into discharged small. batteries. I don't let my on-board batteries get to discharged. I've spliced into the main battery terminal lines..so that they are thick enough to handle the amp load which are 12 gage. I also have a 50 amp connector between the external scooter and the trailer for quick disconnect

YES U CAN

This is really weird, but I had the same thing happen. I just randomly pressed the OK button after I pressed the power button & it starts working. Don't know if this will help. It seems something on the electronic parts must be messed up.

Hello -- All AAA batteries are the same voltage so there is no difference between them.
Some just last longer like Enegizer which is why they are more expensive.
Does the camera need disposable batteries or did it come with a charger to use re-chargable ?
Also make sure they are the right way round as AAA are small enough to fit either way.
Look for the + sign for the first battery. Ray

usually on the bottom of the mouse is a small slide type door with a small indent
slide it open and change batteries, if for any reason mouse were not to work still, look for the reset bottom on bottom of mouse and press it and you might even have to hit reset button of the eye also.
I mention this because of batteries if they are all the way dead sometimes you will have to reset.
keyboard is the same way