I have a 9 volt charger/power supply for my radio. Will this charge an IBM Thinkpad 390 laptop without any damage. The laptop battery is 10.8 volt
2006-11-25 01:57:05 · 8 answers · asked by lamebrain 2 in Computers & Internet ➔ Hardware ➔ Laptops & Notebooks
Probably not as the current demand for a laptop is quite high, in fact very high compared to your radio. So the chances are that you would blow the power supply. Plus it would have to have the same connector and be the same polarity i.e. positive on the middle pin, negative on the outer collar (or visa versa).
In addition to the current demand, in order to charge a battery the supply voltage always needs to be slightly higher than the battery, so in order to charge you 10.8 volt battery you would need around 11.5 volts.
2006-11-25 02:10:06 · answer #1 · answered by Richard_Webb71 2 · 2⤊ 0⤋
No. The 9V charger will only charge the battery to its capability (providing the current output is sufficient. I suggest you log on to the IBM website and request a proper charger for the 390 series Laptops. Otherwise the battery will be damaged or will develop 'memory' (i.e. will only charge to the amount of the charger used.)
2006-11-25 02:08:34 · answer #2 · answered by Anonymous · 1⤊ 0⤋
no it has to be over 10.8v to charge.
a 12v charger would do it. You can buy a universal laptop charger that has changeable plug connectors and changerable voltage. If you set the voltage too low the laptop will not charge up.
This charger can be very cheap and a good investment. They do a car version but don't pay more than £25 or you are been ripped off. I have seen them for around £100 - this is just a stupid price to pay.
2006-11-25 02:06:48 · answer #3 · answered by j_emmans 6 · 1⤊ 0⤋
Nope
2016-03-29 08:26:53 · answer #4 · answered by Anonymous · 0⤊ 0⤋
it may but you should check the current. thats the important bit if that is the same it should be ok. if current on charger is bigger than laptop it will burn out laptop
2006-11-25 02:00:01 · answer #5 · answered by aidy74 1 · 1⤊ 1⤋
I wouldn't suggest you use it. It can cause damage by under charging it.
2006-11-25 01:59:06 · answer #6 · answered by MDTBA 3 · 0⤊ 1⤋
try it any ways u would provid only 9v to a product that is made for 10.8 ....no harm try it
DISCLAMIR: I AM NOT REPONSIBLE
2006-11-25 02:22:48 · answer #7 · answered by bear 1 · 0⤊ 1⤋
no it is not powerfull for the laptop
2006-11-25 02:20:25 · answer #8 · answered by daniel j 1 · 0⤊ 0⤋