Why battery drains if not disconnected? - Swisher 60" 26 Hp Zero Turn Radius Riding Mower #Zt2660b

Something is staying on after you turn the ignition off draining the battery. There are some good diy videos on you-tube. Disconnect your battery positive when done driving until you can find problem.

the red light drain 0.001amp. from you battery.need 1000 hour to drain 1 amp. test the battery if is any good. do drain test on the car.rust and short will drain battery overnight.after market equipment,light in the trunk or glove box, under hood light etc. disconnect the battery and install amp meter. do the drain test. your computers uses 0.2-0.4amp when sleep.anything over 0.5-.6 amp is bad. after you connect the amp meter give 1min. to turn all systems to sleep mode.Is normal the first minute to be high drain.
ones you know something is wrong disconnect the fuses one at the time and note if any changes. if the fuse you disconnect turn the amps low note what system is connected to the fuse and you will know were is the problem

Try disconnecting the battery (engine NOT running). Turn everything off. Touch the battery cable to the battery post - if it sparks a tiny bit, you can easily test. If not, use a multimeter (voltage setting) or test light between teh battery post and the cable to verify a drain. If you find NO drain that way, then nothing's draining your battery - you have a battery or alternator problem.

If you DO find a drain that way, then you have to disconnect everything electrical - one thing at a time - until the drain goes away. When it goes away, whatever you just disconnected is the culprit.

Disconnect any one of the cable from battery (either + or - ) and in series with battery connect a 12v bulb of low wattage say 5w or 10w. By connecting in series I mean one wire of bulb goes to disconnected battery cable and the other wire to the terminal of battery from where you disconnected the cable.

Now observe the filament of bulb, if it glows then your battery is draining due to short in your vehicle electrical system. You need to locate this short circuit and fix it, otherwise your new battery would also drain.

Let us know what you found out.

Someone will have to disconnect the battery and check all of the circuits for a voltage drain.

The alternator may charge fine but could drain the battery through a bad diode,have you checked the alt for a bad diode?Disconnect the battery positive cable.Put a regular 12v test light between the battery positive post and the positive battery cable.If the test light is bright you do have a drain,if dim it is OK.A dim light may mean the drain is internal in the battery.If you do have a bright light remove a fuse ,one at a time from the fuse box until the light goes dim.Once dim you have identified the bad circuit.If removing all fuses do not dim the light,disconnect the alt charging wire at the alt,if that dims the light,then you do have a bad diode.DO NOT create a drain(bright light) when checking for the drain by turning on the key or opening a door/trunk etc.
Also,do an overnight battery check by disconnecting the battery overnight,if things are fine the next morning after the battery was disconnected then it is a drain in the vehicle,if the battery is dead even after being disconnected overnight,,then the battery is bad.

Best thing to do is disconnect the neg battery terminal put your volt meter on amps and hook it up in series from the neg cable head to the battery neg and disconnect fuses one at a time until the draw goes away,then narrow it down from there

TO CHECK FOR A BATTERY DRAIN. TURN OFF EVERY SWITCH IN THE CAR. CLOSE THE GLOVE COMPARTMENT. MAKE SURE THE LITE IN THERE IS GOING OUT. OPEN THE HOOD CLOSE ALL OF THE DOORS. MAKE SURE ALL OF THE COURTESY LIGHTS ARE GOING OUT. DISCONNECT ANY UNDER HOOD LIGHTS. DISCONNECT NEG. BATTERY CABLE. USE A 12 VOLT TEST LIGHT, FASTEN ONE END TO THE NEGATIVE BATTERY TERMINAL, FASTEN THE OTHER END TO A METAL PART OF THE MOTOR. IF THE LIGHT COMES ON, THERE IS A BATTERY DRAIN. NO LIGHT, NO DRAIN. IF THE LIGHT IS ON, PULL EACH FUSE, BIG & SMALL, ONE AT A TIME, OUT OF THE FUSEBOX THAT IS NEAR THE BATTERY. WHICHEVER FUSE MAKES THE LIGHT GO OUT IS CAUSING THE DRAIN. IF THE LIGHT STAYS ON THROUGHOUT THE FUSE PULLING, DISCONNECT THE ALTERNATOR. IF THERE IS SOMETHING WRONG IN THE ALTERNATOR, IT CAN DRAIN THE BATTERY WHILE SITTING STILL, EVEN THOUGH IT IS CHARGING THE BATTERY WHILE YOU ARE DRIVING. GOOD LUCK

Use a 12volt test light between the positive battery post and the positive cable with the positive cable disconnected from the battery.
Keep key off.
You will see the test light "light" with any drain.

Any drain showing a dim test light is..... OK
Any drain showing a bright light is.....BAD

Disconnect items (fuses) one at a time and watch the light.
Keep the doors closed....the inside dome light is a drain with the door open!
After fuses are checked....disconnect the alt if needed and watch the light.
Keep going until you get rid of the bright light.

First disconnect the battery overnight just to make sure the battery is not self discharging......if it's dead or down in charge while disconnected....time for a new one.
Now.....if the battery is good....disconnect one battery cable and place a 12 volt test light between the cable and the battery post the cable had just been attached to. A bright light means a drain in the car.
Your job is to remove one fuse at a time until the light dims.
A dim light is OK...clock memory etc.
Remember....a open car door is a drain......the dome light.....so keep them closed while pulling fuses.
Also....if the fuses don't show a drain......disconnect ALL wires from the alternator....there could be a drain there.
Just keep disconnecting one thing at a time until the light goes out or dims.