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most scooter batteries take 5 to 8 hours to charge correctly the only backup methods are the following
if you have a detachable battery box .pride gogo ect a spare battery box can be purchased and kept charged.
there is no quick way emergency charge if you run out of power
just charge it evrey time you use it and for a min of 8 hours to keep your batteries in top condition,have them tested if you think low range.
First tell how old is your UPS ?
if its older by two to three years may be the Battery eeds a replacement .Try charging the battery externally with a good battery chargers but before charging externally please take out the battery outside.
Then if the battery shows very low voltage even after charging for some 8 hours then you have one alternative that is replace with new battery.and promptly keep it under charge with out fail.
follow this steps and fix it. God bless you
Plug the battery backup into a working electrical outlet. If the battery backup turns on when the power button is pressed, then the problem may be that the previous electrical outlet is faulty. Proceed to step three. If the battery backup doesn't turn on, proceed to step two.
Reset the circuit breaker on the battery backup. APC battery backups have a labeled circuit breaker button located on the unit near the phone line, fax line, USB, network and coaxial cable inputs. Press the button to reset the circuit breaker. Power on the battery backup by pressing the power button. If the battery backup powers on, proceed to step three. If the battery backup doesn't turn on, proceed to step six.
Determine if the battery backup is charged and providing battery power. With the battery backup on and plugged into a working electrical outlet, plug a computer monitor into one of the battery backup outlets labeled "battery backup plus surge protection" on the battery backup. (APC power supplies have some outlets that provide only surge protection while the other outlets provide surge protection plus battery backup.) Turn the monitor on. Unplug the battery backup power cord from the wall outlet. If the monitor remains on, the battery is holding a charge, supplying electrical power and the battery backup is working properly. If the monitor goes off, proceed to step four.
Charge the battery. Plug the battery backup into an electrical outlet and allow the battery to charge for 16 hours. This will fully charge the battery.
Test battery charge. Once the battery is fully charged, repeat step three. If the monitor stays on when power is interrupted to the battery backup, the issue is solved and the problem resulted from an incompletely charged battery. If the monitor turns off when power is interrupted, the battery within the battery backup is faulty and needs to be replaced.
Replace the battery backup unit. The unit itself is faulty. If the battery backup is under warranty, contact APC to request a replacement.
The backup battery exists to protect your data when the main battery dies. It only has enough power to keep the internal memory 'alive' so you dont lose your files, settings etc.
When the backup battery dies it should be replaced as soon as possible, as the main battery will power the internal memory only while it has charge. Should the main battery die it would be like performing a hard reset.
The h5450 comes with what HP calls a backup battery. It is built
into the device and not accessible by the user. However, the backup
battery has only enough juice to power the Pocket PC for a few minutes
while you change main batteries. Don't expect it to keep your RAM data
alive if the main battery runs out.