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There is no definite user period on batteries and that is why there is a warranty. Factors affecting the life of a battery are ambient temperature Cold weather affects batteries that are below good condition. Charge rate --over charging boils of batteries and buckles the plates--Low electrolyte levels affects the life as it causes sulfation of the plates. --vibration of the battery removes the lead paste from the cell plates and reduces the life of the battery (Diesel engine problems). High discharge rates over heats the battery cells and buckles plates causing internal shorts.---crap around the terminals and on the battery posts reduces the ability to pass current and so the battery appears flat /and /or will not charge.
The brand of the battery and the price is no guarantee to quality and long life but proper battery care helps.
1. Check to make sure that you have good air flow around the laptop, including sides and bottom.
2. Make sure fan/heatsink area is clear of dirt, etc. If you are using the laptop in an environment where there is a lot of dust, it will clog up the fan/heatsink.
Check the Lenovo support forum to see how the clogged heatsink looks. https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Y560-overheating-and-shutting-down/m-p/677023
Be aware to get to access to the insides, will require dis-assembly of the laptop. Best left to experts.
Usually that indicates a low battery charge or bad battery. Make sure you do not have the battery backup side overloaded with too many devices. Do not plug inductive loads with motors or heating elements into the backup. Turn the device off and unplug anything that is plugged into the bachup. Plug the battery backup into the wall with nothing attached and turn on. Wait 10-15 minutes. this will charge the battery. If beeping continues after this with nothing attached, you likely need a new battery or the control/monitoring system is bad. If beeps stop, reinstall and do not attach more wattage than the unit can suppluy
Is the laptop under warranty? If yes, then take it to the authorized service station, they shall repair it free of cost. If not, then how old is the laptop? How much battery backup does it provide when it is fully charged?
Charge the thing over night and try again. Nothing? Get a charger you know that works great and charge again. Still nothing? Your battery is shot and needs replacing. Have Apple do it for free if your still under warranty. If your out of warranty and low on cash, then get the battery kit from e-bay and then go on you tube and watch the instructional videos.
The UPS can temporarily provide power to IT hardware in the event of a disruption to the Mains power supply. The UPS should stay powered up for long enough to enable the hardware it is protecting to be powered down in a controlled manner, before shutting off itself. The 5 minute period seems reasonable for such a task (although significantly less than the rated time), and if at any point within that period the Mains power supply comes back online, the hardware could continue to work.
I note that this particular model is supposed to provide battery power for 85 - 95 minutes. The amount of time it can supply regulated voltage for will depend upon the load placed upon it. The greater the load (in terms of current drawing devices), the shorter the amount of time that the UPS will be able to provide power.
There may be a Manufacturer Limited Warranty period (parts): 2 years for this model, although labour charges will probably be made.
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.