My system will not power up after I allowed the batteries to fully discharge. What should I do?

Your description suggests one or both of the batteries are sulphated - been allowed to remain partially discharged or even fully discharged for a few weeks or more.

Charge the batteries, allow them to stand for a few hours and connect a voltmeter. A healthy young battery should read 13/13.2 volts while an older battery that is still serviceable might only achieve 12.7. Much below this and the capacity will be much reduced.

If these are the sort of voltages you have, the charger is probably ok. Ride the scooter until the battery indicator shows recharge is needed and test the voltage again - if it has fallen considerably, at least one of the batteries is faulty.

Traction, semi-traction or deep cycle batteries are the only ones that should be used and cheaper batteries will serve for a time but rarely survive the warranty period.
Batteries that are discharged generate heat when recharged and it is the heat that shortens battery life. Batteries last longer if they receive a top-up charge after each use.

Never leave a battery in a discharged or semi discharged state...

Press and hold
POWER, MENU
and RESET
simultaneously
to reset the Edge.

If the battery gauge does not seem accurate.
Allow the Edge battery to fully discharge, and then fully charge
the battery (without interrupting the charge cycle).

There is no such thing as a memory system in your battery. If you charge the battery until the green light on the charger comes on, that is as much as the battery can/will safely charge to. With Lithium batteries, they will fully charge whether they are at 75%, 50% or 10% capacity when placed on the charger and discharge to 0% if you use them that long. If you need the battery before the green light comes on and you use it, it will still fully charge when replaced on the charger. All batteries do discharge at different rates. Most not noticeably but a few will discharge fast enought to be noticable. If it affects your usage of the tool, you may want to exchange it or get it replaced under warranty because it will only get worse with age.

"Calibrating" a laptop battery is one way to increase the lifespan of a battery that doesn't last long. The procedure involves two steps: fully discharging the battery, then then fully charging it immediately thereafter. It's important to note that a full discharge doesn't mean you drain your battery until your computer powers off, but rather that you deplete it until it reaches a level of approximately 3 percent capacity, according to BatteryCare.com.

1. Charge the laptop battery to 100 percent. Allow the laptop to sit plugged-in and fully-charged for approximately two hours.

2. Click the "Battery" icon in the lower, right corner of the Windows Taskbar and click "More Power Options." Click "Change When the Computer Sleeps," then click "Change Advanced Power Settings."

3. Scroll down to "Battery" and click the "Plus Sign" icon next to it. Click "Critical Battery Level," then click the arrow to decrease the number to "3." Click "Apply," then click "OK."

4. Unplug your laptop and continue using the computer until it reaches 3 percent, at which point it hibernates automatically. Allow the computer to hibernate for at least five hours, then plug it in and allow it to recharge fully.

I hope you find it very helpful. Thank you for using fixya.

Do not expose the <a href="http://www.laptopsbatterysupplier.com/4200mah-replacement-laptop-battery-for-a1280-p-2055.html?cPath=9_2163">apple A1280 battery</a> to high heat or freezing temperatures. Do not leave your <a href="http://www.laptopsbatterysupplier.com/4600mah-replacement-laptop-battery-for-a1281-p-2061.html?cPath=9_2202">apple A1281 battery</a>in your car in the summer. Hot <a href=" http://www.laptopsbatterysupplier.com/sony-laptop-battery-vgpbps8-c-32_2062.html">Sony BPS8 battery</a> discharge very quickly, and cold ones can't create as much power. 6. Fully charge new <a href=" http://www.laptopsbatterysupplier.com/sony-laptop-battery-vgpbps9-c-32_2063.html">Sony BPS9 battery</a> packs before use. New pack needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity. 7. For laptops that work as Desktop Replacement, the <a href="http://www.laptopsbatterysupplier.com/toshiba-laptop-battery-pa3534u1bas-c-447_1843.html">Toshiba PA3534U-1BAS battery</a> should be re -installed every 3-4 weeks and allowed to fully discharge. 8. Leaving the <a href=" http://www.laptopsbatterysupplier.com/4400mah-replacement-laptop-battery-for-gateway-nv52-p-1904.html?cPath=35_2094">Gateway Nv52 battery</a> in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant state of charging up and that will reduce the life cycle of the battery.

If the battery appears to be charging, the drop in the time it sustains power is likely due to a faulty or old battery. Eventually it will appear 100% charged and drop to zero in 5 minutes or less. I would think you need to replace the battery.

If you want to maintain the battery properly, it is best to remove it once fully charged and use on ac power alone. If using the laptop on battery, remove the AC connection and allow the battery to fully discharge before recharging it ( there is some debate on this method, other may disagree)

Calibrate laptop battery pack under the following conditions:
? When the battery status display seems inaccurate.
? When you observe a significant change in normal batteryrun time.
? When the battery pack has not been used for one monthor more.
How to Calibrate laptop battery
To Calibrate laptop battery pack, you must fully charge, fullydischarge, and then fully recharge the battery pack.

Discharging the Battery Pack Disabling Hibernation
To fully discharge the battery pack, disable Hibernation temporarily.
To disable Hibernation:
? Select the Power Meter icon on the taskbar or access Power Options > Hibernate, and clear the Enable Hibernate support check box.

To fully discharge the battery pack:
1. Select the Power Meter icon on the taskbar, or select Start > Control Panel > Performance and Maintenance > Power Options > Power Schemes.
2. Write down the 3 settings in the Plugged In column and the
3. settings in the Running on Batteries column, so you can reset them after calibration.
4. Select the drop-down lists and set all 6 options in both columns to Never.
5. Select the OK button.
6. Disconnect the notebook from the external power source, but do not turn off the notebook.
7. Run the notebook on battery power until the battery pack is fully discharged. The battery light begins to blink when the battery pack has discharged to a low-battery condition. When the battery pack is fully discharged, the power/Standby light turns off and the notebook shuts down.

On MobilePro systems, which both batteries have fully discharged, the user must perform a hard reset after charging the batteries for approximately 10 hours to ensure proper operation. If the systems fails to power on the user must perform a "hard" reset to initialize the power management circuitry.

On MobilePro systems, which both batteries have fully discharged, the user must perform a hard reset after charging the batteries for approximately 10 hours to ensure proper operation. If the systems fails to power on the user must perform a "hard" reset to initialize the power management circuitry.