E310 and non-removable battery..

[Sid_Daley]

I read that the battery is non-removable and was wondering
if that is a big concern or not. I understand rechargeable batteries
have a finite life to them and if you can't put in a new one that might
not be so good.
Opinions please..

Also I can get a Compaq iPaq H3830 for $100 more, is that a
smarter move overall?

Sid

[JackTheTripper]

I understand rechargeable batteries
have a finite life to them...

Are you planning to keep your Toshiba "to infinity and beyond!" I'm not.

I would guess the batteries will last a goodly amount of time. 2 years at least. 4 years? 5 years? Good chance. By that time they'll be installing PocketPC 2007 directly into your skull.

If I'm wrong here (well, except for the 2007 thing) someone jump in here.

[ECOslin]

The Lithium battery should be good for the lifetime of your PDA. Lithium/sulfur batterys have a shelf life of 10 years and 70% of initial charge, if not used.
The discharge rate is constant until the last 15% of charge in the battery, where it drops.

I've got an Audiovox Maestro and the battery life sucks. The battery is internal to the case and one day soon I'll crack the sucker open to see whats in it. Unless I can find good pictures or schematics elsewhere. I'd like to cut a hole in the case and backpack a lithium gel cel against the entire back of the pda. I believe in overkill, I believe in furniture I can stand on, I want a PDA battery that can start my truck and run for weeks!

Edward


High power density. A "D" lithium/sulfur dioxide battery can produce 21Wh (7.5Ah at 2.8V) when being discharged at C/10 current rates. That's about 250Wh/kg (115Wh/lb) or 0.4Wh/cc (6.5Wh/cubic inch). It would take about 2 and a half alkaline batteries or about 20 carbon/zinc batteries to produce the same amount of power under similar load conditions.
Do not open contents and expose to water, unless you have distance and want to be entertained.

[Sid_Daley]

Not forever but I would prefer to not have to get rid
of a functional piece of equipment because the battery
is toast. Imho

Sid

I understand rechargeable batteries
have a finite life to them...

Are you planning to keep your Toshiba "to infinity and beyond!" I'm not.

I would guess the batteries will last a goodly amount of time. 2 years at least. 4 years? 5 years? Good chance. By that time they'll be installing PocketPC 2007 directly into your skull.

If I'm wrong here (well, except for the 2007 thing) someone jump in here.

[Sid_Daley]

That's awesome information, one quick question however. What
is the difference between Advanced Li-Ion (E310) and Lithium
Polymer (Compaq).

The Lithium battery should be good for the lifetime of your PDA. Lithium/sulfur batterys have a shelf life of 10 years and 70% of initial charge, if not used.
The discharge rate is constant until the last 15% of charge in the battery, where it drops.

I've got an Audiovox Maestro and the battery life sucks. The battery is internal to the case and one day soon I'll crack the sucker open to see whats in it. Unless I can find good pictures or schematics elsewhere. I'd like to cut a hole in the case and backpack a lithium gel cel against the entire back of the pda. I believe in overkill, I believe in furniture I can stand on, I want a PDA battery that can start my truck and run for weeks!

Edward


High power density. A "D" lithium/sulfur dioxide battery can produce 21Wh (7.5Ah at 2.8V) when being discharged at C/10 current rates. That's about 250Wh/kg (115Wh/lb) or 0.4Wh/cc (6.5Wh/cubic inch). It would take about 2 and a half alkaline batteries or about 20 carbon/zinc batteries to produce the same amount of power under similar load conditions.
Do not open contents and expose to water, unless you have distance and want to be entertained.

[ECOslin]

http://www.powerpulse.net/powerpulse/archive/aa_080601a1.stm

What is the difference between lithium-ion and lithium-ion polymer? Although the characteristics and performance of the two systems are very similar, the lithium-ion polymer is unique in that the solid electrolyte replaces the porous separator. The gelled electrolyte is simply added to enhance ion conductivity.


Table 1. Advantages and limitations of lithium-ion polymer batteries.

Advantages: Very Low Profile -- batteries that resemble the profile of a credit card are feasible.
Flexible Form Factor -- manufacturers are not bound by standard cell formats. With high volume, any reasonable size can be produced economically.
Light Weight -- gelled rather than liquid electrolytes enable simplified packaging, in some cases eliminating the metal shell.
Improved Safety -- more resistant to overcharge; less change for electrolyte leakage.

Limitations: Lower Energy Density and Decreased Cycle Count Compared to Lithium-Ion -- the potential for improvements exist.
Expensive to Manufacture -- once mass-produced, the lithium-ion polymer has the potential for lower cost. A reduced control circuit offsets higher manufacturing costs.

[Sid_Daley]

Thanks Edward, man you know your batteries are you
involved in the industry or just a technical guy?


http://www.powerpulse.net/powerpulse/archive/aa_080601a1.stm

What is the difference between lithium-ion and lithium-ion polymer? Although the characteristics and performance of the two systems are very similar, the lithium-ion polymer is unique in that the solid electrolyte replaces the porous separator. The gelled electrolyte is simply added to enhance ion conductivity.


Table 1. Advantages and limitations of lithium-ion polymer batteries.

Advantages: Very Low Profile -- batteries that resemble the profile of a credit card are feasible.
Flexible Form Factor -- manufacturers are not bound by standard cell formats. With high volume, any reasonable size can be produced economically.
Light Weight -- gelled rather than liquid electrolytes enable simplified packaging, in some cases eliminating the metal shell.
Improved Safety -- more resistant to overcharge; less change for electrolyte leakage.

Limitations: Lower Energy Density and Decreased Cycle Count Compared to Lithium-Ion -- the potential for improvements exist.
Expensive to Manufacture -- once mass-produced, the lithium-ion polymer has the potential for lower cost. A reduced control circuit offsets higher manufacturing costs.

[ECOslin]

I am a sometime student, an electrical engineer, Computer help desk, cabinetmaker, researcher, manual writer and toymaker.

Former Sales and inventory clerk, Data Entry technician, Aircraft Mechanic, Transient Alert Crew Chief, Maintenance dispatcher, and Circuit City Computer Phone help support.

Currently unemployed and playing with 555 timer circuits.

Edward