Safe rechargeable battery lasting an entire week?

[shekibobo]

Hi everyone, I'm here for my first time, and I was wondering if anyone could give me a lead on what I'm looking for. There is a portable desk that has its own rechargeable power supply. The description is as follows:

"With a built-in battery powerful enough to run a laptop for an entire workweek, and recharge quickly overnight, there’s never a need to stay within reach of an electrical outlet. No wires, no cords, no cables. Each battery has a 7-10 year lifespan, at which point it can be safely recycled."

I'm currently working on a project similar to this which will need to power several devices for a long period of time. So far, I've come across lithium ion batteries, but even then I have difficulty finding anything that comes even close to this performance.

Does anyone know what kind of battery would perform like this?

 

[MikeHalloran]

... would perform like _what_?

You need to write a spec, with numbers and units.



Mike Halloran
Pembroke Pines, FL, USA

 

[logbook]

Let's play with some numbers.
Say a 60W laptop. (Not sure how reasonable that is)
Say 5 hours per day (lazy days!)
say 5 days per week.
That's 60 (watts) * 5 (hours)* 5 (days) = 1500 Watt.hours
assuming no maths errors.

Let's take a lead acid at 13V. At 1A it delivers 13W. For 1500 Watt.hours it would need 115 hours, that is 115 Amp-hours capacity. 110A.hr is a medium sized leisure battery. So a couple of lead-acids would do it.

 

[MacGyverS2000]

Is this a school project?


Dan - Owner

http://www.Hi-TecDesigns.com