Energiser 'Energi To Go' phone charger - what's inside?

[Mike B]

Has anyone taken one of these apart?
http://www.amazon.com/Energizer-Cel2Mot-Instant-Cellular-Motorola/dp/B000JD39X8
Is it anything more than just a plastic battery holder and connector cable?
If so, $20 for a battery holder seems expensive?



Mike

 

[David L. Jones]

Has anyone taken one of these apart?
http://www.amazon.com/Energizer-Cel2Mot-Instant-Cellular-Motorola/dp/B000JD39X8
Is it anything more than just a plastic battery holder and connector
cable?
If so, $20 for a battery holder seems expensive?

It tells you:
"Patented intelligent control chip that maximizes power transfer from the
charger to the cell phone"
Otherwise known as a boost DC-DC converter that converts the 3V from the
batteries to the voltage required for the phone charger system (the phone
handles it's own charging, this device just supplies the voltage and enough
current). IIRC Motorola phones need 9V.

Dave.

 

[Bob Larter]

Has anyone taken one of these apart?
http://www.amazon.com/Energizer-Cel2Mot-Instant-Cellular-Motorola/dp/B000JD39X8
Is it anything more than just a plastic battery holder and connector cable?
If so, $20 for a battery holder seems expensive?

I have a gizmo like that that came free with my Nokia phone. It takes an
AA cell, & it's actually a switched-mode boost converter: 1.5V to 5V.

OTOH, the one you're talking about takes two (3V?) lithium cells, so
maybe it /is/ just a battery holder with a switch in it.

 

[David L. Jones]

I have a gizmo like that that came free with my Nokia phone. It takes an
AA cell, & it's actually a switched-mode boost converter: 1.5V to 5V.

OTOH, the one you're talking about takes two (3V?) lithium cells, so maybe
it /is/ just a battery holder with a switch in it.

No, it uses two standard Lithium AA's which are 1.5V, so it needs to have a
boost converter in it to get the 5V or whatever is required.
The blurb even tells you it has a "Patented intelligent control chip"

Dave.

 

[Bob Larter]

No, it uses two standard Lithium AA's which are 1.5V, so it needs to have a
boost converter in it to get the 5V or whatever is required.

Well, the one I have works off a 1.5V or 1.2V cell.

The blurb even tells you it has a "Patented intelligent control chip"

Oh yeah, so you KNOW it's good, eh? ;^)

 

[David L. Jones]

--
http://www.alternatezone.com/eevblog/

Well, the one I have works off a 1.5V or 1.2V cell.

Not surprising given that a 1.5V cell's end point is 0.8V. A single cell
boost converter will typically have an input range down to at least 1V, a
good one will go down to and start up at 0.8V, so you can extract the most
juice from the battery.

Oh yeah, so you KNOW it's good, eh? ;^)

Yup, typical marketing speak for a DC-DC boost converter.

Dave.

 

[IrvingHebert]

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[IrvingHebert]

I have a gizmo like that that came free with my Nokia phone. It takes an
AA cell, & it's actually a switched-mode boost converter: 1.5V to 5V.I got it from amazon.
Recently I came to know that there is a website named AmazingWatcher.Com which is a free website that will “watch” items for you on Amazon and let you know when amazon has them in stock at regular retail price.It got so awesome!
Good luck everybody!
http://www.amazingwatcher.com