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> Batteries, Battery Options
wsuetholz
post Aug 9 2006, 10:34 PM
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Hello,
Would this type of battery work? If so, then could the battery be integrated into where the hinge is? I realize that this is probably not workable, but, cheap batteries, and the possibility of simplifying the system board layout by not putting the battery in the middle of it, ok, to one side.

2700ma AA rechargeables
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Da_Blitz
post Aug 19 2006, 04:44 AM
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actually from what i have seen alkalines only do about 1000maH but the battery discharge curve is diffrent which for some applications means it gets a longer life

basically an alkilines charge can be worked out from the voltage because as the charge goes down so does the voltage, with the rechargables its at about 90%-100% voltage until you hit 80% capacity, at which point the voltage drops throgh the floor

now if you have a device that requires x volts and is sensetive to changes then you can see that an alkaline would dip past there sooner. however wether or not this would effect s would have to do with the chipset i use for charging, and a bit of testing however i am inclined to use li-Ion due to the weight/capacity advantages

one other thing to note that 1 3.7v litium ion battery @ 1000maH is equal to 3x 1.2v NiMihs @ 1000maH (you cant jus mach maH you have to match the power (power = voltage x current/maH)) so even if the NiMih is 1000mah, i have to pull tricks to bump that up to 3.3v and 5v (cpu IO and USB and perhaps 2.5v) but to do so i have to consume extra current

i am tired at the moment so there may be a mistake in the above statment but basically you dont get somthing for free
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Posts in this topic
wsuetholz   Batteries   Aug 9 2006, 10:34 PM
Da_Blitz   i dont think that making a model that runs off AA ...   Aug 9 2006, 11:07 PM
BarryW   Has anybody looked into the sony video camera batt...   Aug 10 2006, 05:54 PM
Da_Blitz   i belive someone mentioned that, guess it all depe...   Aug 11 2006, 11:05 PM
Ferret-Simpson   I think digital Camcorder batteries are the best o...   Aug 18 2006, 03:59 AM
daniel3000   Having AA batteries (optionally rechargeable) woul...   Aug 18 2006, 04:07 AM
Ferret-Simpson   Yeah, but how many mAh does a normal AA hold? E.G....   Aug 18 2006, 04:31 AM
desertrat   QUOTE(Ferret-Simpson @ Aug 18 2006, 12:3...   Aug 18 2006, 06:24 AM
zedkatuf2   QUOTE(desertrat @ Aug 18 2006, 03:24 PM)QUOTE...   Aug 23 2006, 10:47 PM
Da_Blitz   actually from what i have seen alkalines only do a...   Aug 19 2006, 04:44 AM
Ferret-Simpson   http://www.mobilefun.co.uk/product/11276.htm Beat...   Aug 24 2006, 04:38 PM
Ferret-Simpson   Does No-One have an opinion on this?   Aug 26 2006, 03:24 AM
zedkatuf2   QUOTE(Ferret-Simpson @ Aug 26 2006, 12:2...   Aug 26 2006, 03:49 AM
Da_Blitz   i havent had a chance to look at the link 9still o...   Aug 26 2006, 05:25 AM
Da_Blitz   forgot to mention the obvious however nokia or mo...   Aug 26 2006, 05:28 AM
Ferret-Simpson   You picked the right guy. XD The newer Nokia batt...   Aug 26 2006, 07:53 AM
Da_Blitz   still havent seen the pic is it a rectangular batt...   Aug 26 2006, 04:21 PM
Ferret-Simpson   Mine hasn't arrived yet, but it's separate...   Aug 27 2006, 02:27 PM
Da_Blitz   once i have X up and running ill have a look, at t...   Aug 28 2006, 03:04 AM
Ferret-Simpson   Nono, It's thicker than a Nokia. About Double ...   Aug 28 2006, 03:11 AM
Da_Blitz   my bad, i will need to check the mesurements for n...   Aug 28 2006, 07:02 PM


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