Kaiser's Stock Battery, Ground Plane?

[RemE]

I wanted to add a comment about the Kaiser's battery. It's the first lithium phone battery that I've seen with a ground plane, the inside face of the pack is a metal plate. The plastic film "case" around the battery has this metal plate exposed at all 4 corners to make contact with mating gold fingers in the battery box, all around the battery. I bring this up because there are always cheap batteries available for these phones and I would beware of one without this extra shielding, it may affect performance or just radiate more stray R/F?

Also it's the same capacity as Hermes but has 4 contacts vs Hermes 6 and they are in different locations. You'd think they could work on a "standardized" battery for phones. I found that the Kaiser's USB charge jack is in the same location as the Hermes and that I am able to place it onto the charge cradle that I currently have. Unfortunately the 2nd battery charge bay is useless, but this will work until the next generation of accys and cases come out.

[alanplum]

I didn't know batteries generated RF. WiFi sure, and bluetooth yes, but a battery?

[RemE]

:) No, batteries don't normally radiate, burn maybe, but not radiate. I'm thinking that since it's the inner face of the battery, that it's forming a shield for the back of the phone's electronics.

[MRedZac]

It might be an antenna for something as well !

[Nick Collision]

Yes, sounds like it could be a ground plane for an antenna. GPS perhaps? Getting my HTC unlocked tytnII tomorrow, will look into it.

[cushcalc]

I wanted to add a comment about the Kaiser's battery. It's the first lithium phone battery that I've seen with a ground plane, the inside face of the pack is a metal plate. The plastic film "case" around the battery has this metal plate exposed at all 4 corners to make contact with mating gold fingers in the battery box, all around the battery. I bring this up because there are always cheap batteries available for these phones and I would beware of one without this extra shielding, it may affect performance or just radiate more stray R/F? . . .

I just received a battery I ordered from http://http://stores.ebay.com/Accessories-Pro-shop_Battery-and-Charger_W0QQcolZ4QQdirZ1QQfsubZ9QQftidZ2QQtZkm.

It does not have the exposed metal corners of the original battery. It powers up the phone fine, but now I'm worried that I may cause a problem.

Would like to know the purpose of the metal contacts, and how important it is to stay with the exact match battery.

[RemE]

My educated guess is that it's a radio interference shield, probably required for certification. I'm sure of one thing, they didn't do this for fun, it was required.

Like most PC hardware, they are specified as Class B/ Class C etc. relating to radiated interference for home use vs commercial use (higher levels allowed). Once purchased, we merrily change bits and pieces, possibly voiding the original certification, but with little if any noticible consequence.

I think this is similar, unless someone notes that there is poor performance in one of the radios, like reduced sensivity from the GPS etc. we won't know.

[neotekz]

My educated guess is that it's a radio interference shield, probably required for certification. I'm sure of one thing, they didn't do this for fun, it was required.

Like most PC hardware, they are specified as Class B/ Class C etc. relating to radiated interference for home use vs commercial use (higher levels allowed). Once purchased, we merrily change bits and pieces, possibly voiding the original certification, but with little if any noticible consequence.

I think this is similar, unless someone notes that there is poor performance in one of the radios, like reduced sensivity from the GPS etc. we won't know.

if it is required then should we not see it on other pda batteries? is there a plate on the back of the battery for the 8525?

[RemE]

Not necessarily, this is the first shield plate that I've seen on any phone, the fact that it's there with matching contacts in the 4 corners of the Kaiser's battery box means that on THIS phone, this was designed in. We just don't know the engineering reason,but there is one.

[c6638746]

I think this is used as either some kind of antenna or for some kind of isolating purpose. No doubt about that. I just purchased the following battery:

http://www.batteryupgrade.com/product_detail.php?productId=17769546&searchphrase=HTC%2520P4550%2520battery%2520(1600%2 520mAh)

This battery does not have the plate in the back like the original battery. By the way I recommend this battery, so far it works great. Same size as OEM and no need for new cover. Made in Honk Kong and ships from there, comes with 1 year warranty.

One interesting thing that I do notice using this new battery is that it appears that my GPS reception has improved. With the original battery I do not get reception indoors and now I do (although not always). I believe I can confirm this as well. I was never able to get any GPS reception anywhere indoors before (meaning inside of a home).


I wanted to add a comment about the Kaiser's battery. It's the first lithium phone battery that I've seen with a ground plane, the inside face of the pack is a metal plate. The plastic film "case" around the battery has this metal plate exposed at all 4 corners to make contact with mating gold fingers in the battery box, all around the battery. I bring this up because there are always cheap batteries available for these phones and I would beware of one without this extra shielding, it may affect performance or just radiate more stray R/F?

Also it's the same capacity as Hermes but has 4 contacts vs Hermes 6 and they are in different locations. You'd think they could work on a "standardized" battery for phones. I found that the Kaiser's USB charge jack is in the same location as the Hermes and that I am able to place it onto the charge cradle that I currently have. Unfortunately the 2nd battery charge bay is useless, but this will work until the next generation of accys and cases come out.

[Scann69]

How is ther performance of this battery? Any better or a lot worse then the original battery? I'm really finding it hard to find charging point everywhere i go cos the original battery just cannot last the whole day :mad:



I think this is used as either some kind of antenna or for some kind of isolating purpose. No doubt about that. I just purchased the following battery:

http://www.batteryupgrade.com/product_detail.php?productId=17769546&searchphrase=HTC%2520P4550%2520battery%2520(1600%2 520mAh)

This battery does not have the plate in the back like the original battery. By the way I recommend this battery, so far it works great. Same size as OEM and no need for new cover. Made in Honk Kong and ships from there, comes with 1 year warranty.

One interesting thing that I do notice using this new battery is that it appears that my GPS reception has improved. With the original battery I do not get reception indoors and now I do (although not always). I believe I can confirm this as well. I was never able to get any GPS reception anywhere indoors before (meaning inside of a home).

[ilordvader]

I think this is used as either some kind of antenna or for some kind of isolating purpose. No doubt about that. I just purchased the following battery:

http://www.batteryupgrade.com/product_detail.php?productId=17769546&searchphrase=HTC%2520P4550%2520battery%2520(1600%2 520mAh)

This battery does not have the plate in the back like the original battery. By the way I recommend this battery, so far it works great. Same size as OEM and no need for new cover. Made in Honk Kong and ships from there, comes with 1 year warranty.

One interesting thing that I do notice using this new battery is that it appears that my GPS reception has improved. With the original battery I do not get reception indoors and now I do (although not always). I believe I can confirm this as well. I was never able to get any GPS reception anywhere indoors before (meaning inside of a home).

YA i like to know how much more does this last than the org battery
1 more hr or more ?
thankyou