[rob_ocelot]

Originally Posted by Jason Dunn

I'm pretty dubious myself - I tested one from Martin Fields and saw NO difference in my tests. Also, what the h-ll kind of laptop can only do 20 minutes of video playback before dying? :roll:

You have to wonder if these 'independant' reviews aren't plants by the manufacturer. The guy in the laptop review was talking about how he was a 'changed man' like it was a religious experience for him. :wink:

Why do I think that the manufacturer had a surplus of the same material left over from when the 'cell phone antenna booster' market crashed a few years ago?

The real problem with testing these sort of devices is that every battery has a different history of use/abuse and how many recharge/discharge cycles it has had.

A Li-ion battery in general will last about 2 years regardless if you use it or not, now factor in how you initally charged it (12 hours minimum is recommended, even if the charging is finished in an hour), and then factor in your daily habits with the battery -- do you use it for a few min at a time and then 'top it up' in the charger or do you discharge down to 40% and then charge it? Finally factor in any incidences of battery abuse -- did you ever accidentally discharge it to zero charge? (btw, very easy to do on the newer power hungry 128 MB VGA models like the e800. Even in standby mode I coudn't leave my unit for a few days without it being drained to 20% charge). Heck, even the ambient temperature you use the battery in makes a difference

The point is that there are far too many variables to keep in control when you try to scientifically investigate something like this. I wont even get into differences in application of the product by the end consumer.

[rob_ocelot]

Originally Posted by Jason Dunn

I'm pretty dubious myself - I tested one from Martin Fields and saw NO difference in my tests. Also, what the h-ll kind of laptop can only do 20 minutes of video playback before dying? :roll:

You have to wonder if these 'independant' reviews aren't plants by the manufacturer. The guy in the laptop review was talking about how he was a 'changed man' like it was a religious experience for him. :wink:

Why do I think that the manufacturer had a surplus of the same material left over from when the 'cell phone antenna booster' market crashed a few years ago?

The real problem with testing these sort of devices is that every battery has a different history of use/abuse and how many recharge/discharge cycles it has had.

A Li-ion battery in general will last about 2 years regardless if you use it or not, now factor in how you initally charged it (12 hours minimum is recommended, even if the charging is finished in an hour), and then factor in your daily habits with the battery -- do you use it for a few min at a time and then 'top it up' in the charger or do you discharge down to 40% and then charge it? Finally factor in any incidences of battery abuse -- did you ever accidentally discharge it to zero charge? (btw, very easy to do on the newer power hungry 128 MB VGA models like the e800. Even in standby mode I coudn't leave my unit for a few days without it being drained to 20% charge). Heck, even the ambient temperature you use the battery in makes a difference

The point is that there are far too many variables to keep in control when you try to scientifically investigate something like this. I wont even get into differences in application of the product by the end consumer.

[rob_ocelot]

Originally Posted by Janak Parekh

One last question: how long do you think the "benefit" would last? Are talking days, weeks, months? I'm guessing shorter, but the longer it is the more value such a "sticker" would have.

If this does actaully work, I suspect the bennefit comes from giving your battery a massage once in a while, rather than the composition of the sticker :-)

I don't think I'd guess on how long the bennefit would last (see my above post on the variables involved). If we could get six months it would definitely be worth it. I wonder as well if the newer swappable PDA batteries that come in plastic shells would get any bennefit. This definitely seems to work better with the older Li-polymer packs that were not easily swappable.

[Janak Parekh]

Originally Posted by rob_ocelot

If this does actaully work, I suspect the bennefit comes from giving your battery a massage once in a while, rather than the composition of the sticker :-)

Presumably you can massage Li-Polys, but I'm not quite sure how to massage Li-Ions.

--janak

[felixdd]

Have anyone looked at the specific heat capacity of these "stickers"? Are they really thick? If yes to both questions, maybe they're just some really high specific heat material that moderates the temperature of the battery (i.e. heats up slower and thus doesn't reach as high a temperature)?

[JvanEkris]

They are suprisingly thin. They do have some "metalic" texture in them and when cutting them they are very tough (not hard, but just difficult to cut). In the back-side, the side that is turned towards the battery, it is simply black.

Jaap

[Matt Kitchen]

Originally Posted by Janak Parekh

Presumably you can massage Li-Polys, but I'm not quite sure how to massage Li-Ions.

--janak

I think it is done circular motions - starting with your fingertips and moving towards palms and then the heel of your hand.

Or maybe they prefer the fingertip only approach...

[Janak Parekh]

Originally Posted by Matt Kitchen

I think it is done circular motions - starting with your fingertips and moving towards palms and then the heel of your hand.

On a hard shell of a battery like my laptop's?

My point was that Li-Polys are flexible and implicitly massageable, but Li-Ions are not.

--janak

[Fishie]

Originally Posted by Jason Dunn

I'm pretty dubious myself - I tested one from Martin Fields and saw NO difference in my tests. Also, what the h-ll kind of laptop can only do 20 minutes of video playback before dying? :roll:

A Sony :mrgreen:

[Fishie]

Originally Posted by Janak Parekh

Presumably you can massage Li-Polys, but I'm not quite sure how to massage Li-Ions.

--janak

Nothing to be ashamed off, we all done it at one time or another.

[Cybrid]

Originally Posted by felixdd

Have anyone looked at the specific heat capacity of these "stickers"? Are they really thick? If yes to both questions, maybe they're just some really high specific heat material that moderates the temperature of the battery (i.e. heats up slower and thus doesn't reach as high a temperature)?

By George, I think he may be onto something. Heat accelerates chemical reactions. That's why in colder climes like Ontario they use block heaters in cars and you cook food.

Perhaps this thing is a simple insulator..."black heat absorbing battery side and silver reflective on the other". Keep the battery warmer and get better results. This most likely reduces the battery longevity.