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I need to replace the charger and cord for my laptop. It is a 19v 3.95a. How improtant is it to match the amp rating?

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The Voltage must be within 10% of your original AC Adapter Voltage. The Amps may be the same or higher but they cannot by lower. Or it would damage your laptop. Besides the voltage and current, make sure the connection fits the port in your laptop.
Source for Toshiba laptop ac adapter

Posted on May 18, 2011

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Toshiba c655d-s5133 plugged in not charging


Dead battery? Try another cord/charger with the EXACT same power specs.

Jan 25, 2013 | Toshiba Satellite Computers & Internet

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I have a Toshiba U500 00X laptop with 19V power supply which I do not have with me at the moment. I do have an ASUS 19V AC adapter with positive terminal on the inside of the circular plug. The diagram on...


Hi, what your toshiba laptop model and asus laptop model? You can use the asus ac adapter on your toshiba laptop only if the folllowing three conditions are met:
1) Output Voltage is within +/- 5% of your old charger's output.

For example, if your old charger provides 19V, then you can use a charger that provides 20.5V or 18.5V.

2) Output Current is the same or higher than that of your old charger.

For example, if your original adapter provides 3.42 Amps, then you can use a charger that provides 3.42 Amps, 3.9 Amps or higher.

3) Connector tip must fit securely into your laptop.

For the specifications of the two adapters, you may check it here:
http://www.chargerbuy.com, then decide if it will work or not.

Jul 07, 2011 | Computers & Internet

1 Answer

My gateway EC3081i laptop do not charge 100%. actually, the battery is new as I have replaced the old one. BTW i replaced the old one since my battery is charging uptp 88% only. However, the same problem...


Please compare the Volts AND Amp ratings on BOTH the laptop (underside) AND the A/C adapter.
IF they don't match, then battery may not charge to full capacity.

Example: 19V, 3.9Amp

Apr 03, 2011 | Gateway LT2021u Netbook

1 Answer

Replacing the OEM 18.5 V 3.5 A ac adapter with an 19V 4.74 A adapter for my c551nr compaq, should not give me problems, will it? It should be within spec, hopefully.


Specification of Compaq Presario C551NR AC Adapter:
Power: 65W
Output: DC18.5V 3.5A
DC Connecter (Barrel) :
Internal Diameter: 1.7mm
External Diameter: 4.8mm

But it's OK to use a 90w 19V 4.74A adapter on your laptop only if the connector tip fits your laptop.

Thefollowing three conditions should be met for you to use an ac adpater safely. 1)Output Voltage is within +/- 5% of your old charger's output.
For example, ifyour old charger provides 19.5V, then you can use a charger that provides 20.5Vor 18.5V.
2) Output Current is the same or higher than that of your old charger.
For example, ifyour original adapter provides 3.42 Amps, then you can use a charger thatprovides 3.42 Amps, 3.9 Amps or higher.
3) Connector tip must fit securely into your laptop.

Mar 29, 2011 | Compaq Presario C551NR Laptop Charger...

3 Answers

Can using the wrong Toshiba ac adapter destroy or damage your Toshiba computer?


Take a look at the sticker on the bottom of the laptop, and also on the AC adapter you have. IF both ratings for Voltage AND Amperage match exactly (as in, say 18V, 3.8mA), AND if the connector fits snugly (no 'wiggle room' means no constant shorting, which can destroy a motherboard, believe me), then I'd try it myself, in a pinch anyway. I've found laptop adapters on a particular eBay vendor named sib-usa to be perfect matches, as long as you search their 'store' for your exact model (again, on the bottom sticker on your lappie)--and they're pretty cheap, many if not most going for under $15, including the shipping! I've bought dozens from them for my own local PC repair clients--even my own brother. Hope this helps.

Feb 18, 2011 | Toshiba Computers & Internet

1 Answer

A quick question, I have an Acer Aspire 5516 and today the charger just flat out stopped working. it was a 19v 65w charger, then I had gotten a universal charger that came with 19v 75w and 19v 90w tips. I...


You do not have to be worried about the wattage. Wattage (in the case of chargers) is the capacity a charger can provide. So higer the wattage better it is. However, higher the wattage higher the price usually. Voltage has to match. But the most important thing to look for when you buy a universal adapter is the polarity. Take care to match the polarity. Polarity will be represented by a small line encircled by a circle with + AND - . If you look at it carefully you will understand that it is trying to tell you what polarity is the inner lead and the outer lead. You will see this marking on the charger and also on your laptop close to the DC in. (Usually the inside lead is positive and the outside lead is negative) However some manufacturers reverse this. (I have no idea why they do it though I think some kind of regulatory body should make a standard to avoid unsuspecting users from frying their devices). If your voltage and polarity is matching you are good to go with 65 watts or above. If this holds good, don't worry about any listings.

Sep 19, 2010 | Acer Computers & Internet

1 Answer

My battery never worked so i used my charger to keep my window vista 32-bit computer alive but now the charger wont work it just flashed n turned off what does this mean..??


Find an electric/electronic geek-friend with a voltage/amperage multi-meter, and get him/her to test the output of the charger, i.e., 6V to 19V, 1A to 3A,
to see if the "actual" output matches the "rated" output printed on the charger's label.
If not, your charger needs to be replaced.
If it's OK, then take your computer to a qualified technician, for trouble-shooting why the power isn't reaching the "guts" of the computer.

Jun 01, 2010 | Acer Aspire 3680 Laptop

1 Answer

My Gateway laptop use AC cord with the output 19v = 3.42A. can I use the AC cord with the output 19v = 3.95A?


Yes you can use one that has an higher current rating. The system will only use what it needs. If you try to use one with an lower current rating the power supply would fail. Just check to make sure the pin out is the same..ie postive tip or negtive tip.

Feb 23, 2010 | Gateway HQRP Replacement Laptop AC Adapter...

1 Answer

Psu


200 watt max. 19v DC power brick with a 4 pin plug, with two positive and two ground pins. The PSU is unique to the E-bot. I have not been able to find an exact match anywhere. Foxconn no longer sells the PSUs and will not help with tech support in any way. The PSU was originally produced by Fortron Source Power (FSP). When mine went bad, I had to buy a similar looking unit (but with only a 150 watt max rating), then I had to rewire the output cord, because the 4 pin plug had the positives and negatives switched around.

If you need a new power brick for the Ebot, I seriously hope you have the old original unit still. If you do, you can then simply buy any 19V laptop power brick that has acceptable power output (at least 120 watt) and then replace the power output cord with the original one from the Ebot's power supply (some soldering required). It's really the only way to replace the unit.

Jun 23, 2008 | Foxconn eBOT Barebone

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