Anyone have a dead Asus battery? A32-A8 please!

I am willing to pay for your dead A32-A8.

Hopefully a moderator wont move this thread to the shopping channel.

Where better to look for an Asus dead battery then in the Asus forum.

 

Sorry, I don't have one, but I am curious... Why do you want one?

David

 

Well… I was afraid someone was going to ask this…

How I came to this is rather very long.

I am trying to build the most efficient way to run my laptop off an external battery. IE a vehicle battery.

Naturally, the first thing I did was used an inverter. However, my laptop would only run for about 1 hr on it before it killed my car battery. I didn’t understand this. The battery in my laptop is 4.8AH, and my car battery is ~55AH. Turns out the inverter is a crazy-inefficient way to make AC power.

So then I looked into a power adapters that plug strait into the 12v DC port. Turns out they are just as bad for inefficiency. As it has to take 12v and ramp it up to 18v, it is a mini inverter as well.

So then I entertained the idea of running two deep cycle batteries together for 24v then running it down to 18v and run that 18v line directly into the laptop with a direct pass through power cable. But this presented a lot of problems. Most of which was where would the extra batteries be stored and, most important, how were they going to be charged… So that idea didn’t seem very viable.

Then one day, I pop the battery out of my laptop and see it says 11.1v! I’ am like, “OMG! ***! This thing can actually run off 11.1v???!?!” So I go buy a universal cable that plugs into the 12v DC port and plugs into the back of the laptop. Turns out it wont start. It requires at least 16v to start, but can actually run on 12v. It was determined that there is some kind of switch or circuitry within the laptop itself that prevents it from starting when plugged in if it doesn’t have at least 16v running to it. It WILL start if the battery is in, it just wont if it is out.

So a work-a-round was thought up that involved scrapping a dead battery. We would wire in the external 12v DC line into the battery and plug the batter into the laptop. There by, the idea is, the actually batter would be the deep cycle, not the batter attached to the computer. Or another way of looking at it would be, the batter in the laptop would be drawing power from the deep cycle battery.

If it works I would be able to get about ~12 hrs of life at full power on a normal (~55Ah) deep cycle, and about ~20 hrs of life on a high cap/high performance (~125Ah) deep cycle.

If anyone knows a better way to do this, please, by all means, speak up!

 

OK. Sounds like an interesting project and I hope it works. Sorry I can't help with a battery. If you were after a battery for a Dell C-series laptop, I could supply several. But my ASUS batteries are all in use.

Have you looked at eBay. It has been a while since I looked but they people were selling old batteries.

Don't forget to tell us how it goes.

David