Failure of the battery to charge while in the home cradle

Hi, I have a Dyson DC56 with a lithium battery for about 18 months and I leave it plugged into it's charger when not in use. I do notice the Dyson charger seems to switch off automatically when charged. I don't have any problems so far. It you have a Genuine Dyson Lithium battery and the genuine Dyson charger it should not be a problem. That is because Lithium batteries have very precise requirements for their charging cycles and therefore the correctly designed charger required to make them work safely is a somewhat intelligent design and needs to be of good quality in having to meet those requirements. So use the original Dyson Charger. Also most high current Lithium Batteries will also have a protection circuit built in further increasing safety and reliability. Just don't use cheap cloned Chinese made Lithium chargers, because you will never know if they have been designed or even will operate correctly.
Now if you have old technology Ni Cad (Nickel Cadmium), LA (Lead acid) or NiMH batteries with basic cheap chargers they should not really be left connected to a charger full time.

If you're using the charger supplied with the phone, it should either work or not. If it doesn't; either the phone battery, charger or both require replacement.

If the battery is "good" and you are using a "3rd party" (non-original equipment) charger, you may not have one that is incapable of providing the correct voltage, charge current or both. If the charger can not provide adequate charge current or voltage, it is very possible that the charger is shutting off due to excessive heat. Once sufficiently cooled, it charges again.

Make sure that you've got the correct charger - or one that is designed to charge the type battery in your phone at the correct voltage and current rates.

Because your system is designed to operate off of batteries only, coming up with an external power supply to work around the original design becomes an issue. In order to do what you want to do you would have to have a rechargeable battery maintained by an appropriate charger that would run the system from the charger/supply, charge the backup battery and switchover to the battery in the event of a power failure. These do exist and one manufacturer is Altronix but there are several, you just have to visit a DIY alarm website and get recommendations bearing in mind the battery voltage your system is designed for and the amp hour rating necessary to keep the system running the duration of the power outage and beyond. Keep in mind the reason for your alarm system is security and compromising that with homemade non-UL retrofits might not be the way to go, your choice.

Hello. There is a hardware failure with the laptop not the AC charger. AC chargers have some range of protections of their own. If the power requirements of the laptop are bigger then what the charger can handle, the charger will turn off. Also other parameters can bring the charger offline. In your case, you have a problem with a small chip, the battery charge controller unit, witch regulates the amount of current required to propperly charge the battery. When this thing fails, the charging requirements for the battery are reported rong and the AC charger is forced to give more power then necesary. This results in disconnection of the AC charger ( an internal fail safe of the
AC charger) and the laptop to swich back to battery power. When the laptop is turned off, it can charge the battery because the power requirements are low, having all processor, main board, hard disk etc turned off. Therefore the AC charger can handle the load. However you will need to have it checked by a service center as it is a hardware fault. Both AC charger and laptop needs that check.
The charge controll circuit needs to be replaced probably. It will be a somewhat expensive repair. Don't buy any other battery untill you have the laptop checked.

Acer Aspire 7520

Hi -

It is not uncommon for some devices to be unable to accept a charge while in use - especially if not using the supplied charger. This is because the amount of power required to USE the device (your iPhone in this case) exceeds the amount of power provided by the charger.

If trying to make a call, you may be able to coax your iPhone to accept a charge if you shut down un-needed services such as wifi, GPS and BlueTooth radios along with turning the brightness of the display down, etc. This greatly reduces the power requirements of the phone; and if the charger is powerful enough, it will begin to slowly charge your phone. The charge rate will be significantly lower - requiring a longer time on the charger - whenever the phone is being used AND charged. Once the phone is no longer being used, the charge rate will immediately increase, since AC power no longer has to be divided between charging the battery and operating the phone lights, radio, etc. This shortens the amount of time needed to recharge, significantly.

Whenever possible, use the the supplied charger - or one with the SAME voltage, polarity, and voltage type (AC or DC). The amount of current or wattage should be the same or greater than the original. Most phones use USB connectors and are 5 Volts DC. USB standards call for between 1/2 and 1 Amp current. Since watts is equal to volts x amps, this example would represent a 2.5 (if 1/2 amp) to 5 (if 1 amp) watt charger. If you could find a higher wattage charger while still maintaining the DC voltage requirements, you would be able to use and charge the phone at the same time.

I hope this answers your charger question & good luck!

EBay, if that's what you want. The metz "chargers" are just 7 volt ac transformers - they supply 7 volts to the battery pack which has the actual charging circuit in it. I haven't pulled one apart yet, but I'm guessing they're very rudimentary chargers. Depending on what you're using for a battery you might want to use a modern external smart charger. I use $20 AGM batteries from batteries plus (instead of the $80 metz batteries) and use an external charger from WallMart on them. It's quick, lets me see the current charge state, won't overcharge the battery, and works on my car and boat batteries too.

check the voltage and current rating mah for the battery there is a probability that the battery may be of high current rating and your charger of low so it will definetely not charge the battery of the camera or will take too long to charge it..

Yes. You need a new battery. I would assume the same. Have the battery checked or try charging it in the battery charging cradle overnight.

This from Sony website:

To ensure the proper operation of the battery, please do as follows after charging the battery.
(1) When charging by connecting the AC adaptor directly to the camera Pleasedisconnect DC IN from the camera after charging is completed. Also, itis recommended to remove the battery from the camera when charging iscompleted as the battery is discharged slightly even if the camera isturned off.
(2) When charging with the supplied USB cradle Ifthe camera is installed in the USB cradle, please leave the power cordconnected to the outlet (when using the power strip, please leave itsswitch to on).If you want to unplug the power cord (or switch off thepower strip) after the battery has been charged using the USB cradle,please remove the camera from the USB cradle. Also, it is recommendedto remove the battery from the camera when charging is completed as thebattery is discharged slightly even if the camera is turned off.
NOTE: When you charge the battery by connecting the AC adaptor directly tothe camera or using the USB cradle, do not leave it with the power corddisconnected from the outlet.

Should it not work, continue with the manual reset procedure below:

1. Turn off the camera.
2. Ensure the camera is not connected to an AC power adapter.
3. Remove the battery from the camera for 15 seconds.
4. Reinsert the battery.
5. Turn on the camera.

NOTE: If the issue is not resolved by performing a reset procedure, service may be required .

Hello. There is a hardware failure with the laptop not the AC charger. AC chargers have some range of protections of their own. If the power requirements of the laptop are bigger then what the charger can handle, the charger will turn off. Also other parameters can bring the charger offline. In your case, you have a problem with a small chip, the battery charge controller unit, witch regulates the amount of current required to propperly charge the battery. When this thing fails, the charging requirements for the battery are reported rong and the AC charger is forced to give more power then necesary. This results in disconnection of the AC charger ( an internal fail safe of the AC charger) and the laptop to swich back to battery power. When the laptop is turned off, it can charge the battery because the power requirements are low, having all processor, main board, hard disk etc turned off. Therefore the AC charger can handle the load. However you will need to have it checked by a service center as it is a hardware fault. Both AC charger and laptop needs that check. The charge controll circuit needs to be replaced probably. It will be a somewhat expensive repair. Don't buy any other battery untill you have the laptop checked. For more aditional info please post back. PS. Sorry for my bad english, I am from Romania, it is pretty hard for me to explain tehnical stuff in english.