Comments on: m500 Series Travel Chargers Available
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RE: Any issues with these?
I swear by mine
I placed my order for the 9V m505 charger earlier this week. This is a must have if you ever travel. More convenient than an AC charger, and smaller too!
-Al
RE: Any issues with these?
I'm not a electrical engineer, but it would seem that a device is designed to charge at a certain voltage. Does a 9V battery charge at the same rate/voltage (or what ever the correct factor is) as the cradle?
There must be an EE around here somewhere!?!
RE: Any issues with these?
He says that the M50x has the charging circuitry built-in, so all it needs is a regulated 5V supply...
Ben
RE: Wow!
Thanks for the link. That is the best technical evaluation I've seen on any Palm. A MUST read for Palm fanatics.
Regarding this battery charger, I'm not sure his analysis makes me more comfortable with this 9V charger.
He writes:
Fortunately Palm also found the space to fit the complete charge logic in the unit. Like the PalmIIIc, the m505 needs only stabilized 5V (up to 700mA) to be charged. The PalmVx still used a dedicated external LiIon charger supplying the right current/voltage regulation.
With a little luck and the right adapter (self made), you might be able to use your mobile supply in the car to charge also your m505. Alot of mobiles use external 5V supplies and most of the cigarette plug style adapters are able to supply 1A, more than enough. A little warning here: If you intend to use a replacement for the original 5V supply from Palm, make sure it's truly regulated! There are good regulated wall bricks on the market for as much as $10-$20, they'll do it. Don't use the usual $5 '3-6-9-12V' supplies!! They are most likely not regulated and the output voltage is varying strongly with the output load. But a LiIon battery is not charged with a constant current, but with a constant voltage (along with a current limit if necessary). In other words, when the LiIon battery is quite empty, the charge current might be as high as 300-500mA and the voltage of the cheap brick is right. Later, when the battery becomes full the current drops below 10mA and the voltage would rise above a healthy level, due to the missing load. So better spend a few $$$ more!
Dumb Question:
Your Milage May Vary, It's A Dumb Idea, Don't send me your burned up toys, etc.
RE: Dumb Question:
RE: Dumb Question:
Francis Lo
Hong Kong
RE: Dumb Question:
RE: Dumb Question:
$29 is a sad price to pay for a battery with about 10 cents worth of parts attached to it.
The website looks pretty sad too.
RE: Dumb Question:
RE: Dumb Question:
If you can string together a bunch of ICs, resistors and capacitors AND make it look half decent with the Universal Connector for under $29, go ahead. If you can take those 10 cent components like you say and make a decent profit, do it. Otherwise, deroggatory statements are not necessary.
RE: Dumb Question:
Bump.
RE: Dumb Question:
Not that dumb
Yes, it is true that a LiIon battery pack needs complex charging circutry to properly charge, but all that is built in to the Palm (PalmIIIc, m500, m505. NOT the V or Vx).
All you need to do is take the batterypower through a regulator to get 3,3 or 5v stabilized (is it 3,3 or 5? Don't remember...) and it would charge.
Palm branded M500 series chargers
Quick Questions
Does this device completely charge the m505?
How many charges do you get out of a 9v battery? and 2 AA's?
Thanks,
Claire
Just got mine today!
On the upside, it is extremely small and will disappear nicely into your pocket. Definitely going to be a lot more convenient than the Palm travel charger!
-Al
-
Battery Length
Purple m505?
RE: Purple m505?
Emergency Chargers
Travel Charger
I think MicroInnovations is supposed to be a good company. This charger fits in any AC outlet, has a LED indicator, has a 10' cable, does rapid charging, has over charging protection and works with 110-220 volts.
I would appreciate it if anyone having positive or negative would post them here.
Many thanks!
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Any issues with these?
Does anyone know if there are risks by using this device? What does Palm think about this?