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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Thu Jun 04, 2009 5:48 pm 
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Portablizer
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Location: Next door to my neighbor
So, while its on, you will need both plugged in to play and charge?

Are they possible to combine?

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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Thu Jun 04, 2009 6:35 pm 
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Niblet 64
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2 things would be required:

1. a charging circuit connected to the batteries that splits the voltage, half going to the battery pack, and the other half to the system
2. a charger that can supply enough current for both.

Someone would have to design a specific circuit for that, and that would be expensive/not something the average portablizer would implement.

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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Fri Jun 05, 2009 3:39 pm 
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But it would be possible to charge and play off of wall power at the same time using two separate adapters?

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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Fri Jun 05, 2009 3:47 pm 
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Here's another one: Would it work to use a 7V wall power adapter instead of a 7.2V one?

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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Fri Jun 05, 2009 4:36 pm 
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Location: I am so caught up in real life I have to be done for a while. I'll still check in but dontexpectmuch
wajimba wrote:
Here's another one: Would it work to use a 7V wall power adapter instead of a 7.2V one?

It depends on what you're powering. If the power goes into a 7805 linear voltage regulator then 7v would be fine. If it is something that specifically goes straight into the board, you might still be fine, all that would happen would be that the system/circuit wouldn't turn on, no damage would be done.

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wallydawg wrote:
chainfire95 wrote:
220V I believe


I think we should check to see if you can withstand 220 volts


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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Sun Oct 11, 2009 11:08 am 
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Joined: Sun Oct 11, 2009 1:39 am
Posts: 78
Question. I happen to have stumbled upon some CHEAP Li-ion batteries at Goodwill and picked up two. They are each rated 7.4V 2000mAh (LISG160, offbrand battery for Samsung Camcorders if you're interested). I plan on using a 7805 regulator, I'm also using the Retroduo)

If I buy the charger that is typically supposed to charge one of these babies at a time, will it charge them both without a hitch if they are in parallel, or will I just cause something to explode?

(Edited since I found some of my answers)


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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Wed Jun 08, 2011 1:34 pm 
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Joined: Fri May 20, 2011 3:13 pm
Posts: 19
Mega bump, but I have a question. Don't you need to have a -7.4 charge going to the system as well?


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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Wed Jun 08, 2011 6:53 pm 
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Joined: Sat Jan 30, 2010 12:22 am
Posts: 1000
Location: Australia
With my topic, reckon any of you could help me there?

I got the protection circuit (honk kong lol) and the battery and the charger.

http://forums.benheck.com/viewtopic.php?f=9&t=42893


Thanks


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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Wed Jun 08, 2011 6:54 pm 
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Location: Australia
agentwd40 wrote:
Mega bump, but I have a question. Don't you need to have a -7.4 charge going to the system as well?


Why would you have a negative charge when you need a positive to charge the battery?

Are you confused with Ground??


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 Post subject: Re: Wiring lithium polymer (LiPo) batteries
PostPosted: Fri Jun 10, 2011 7:51 pm 
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Joined: Fri May 20, 2011 3:13 pm
Posts: 19
probably... I just noticed my gamecube had two power pins and assumed I needed positive and negative. So it one of them a ground pin then?

EDIT: This is what I was talking about... this chart says I need a negativly charged wire feeding next to the positive one: viewtopic.php?f=41&t=32713


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