Any flat Li Polymer external batteries that handle 120w+? For G50VT

I have an Asus G50VT-x6 with orange trim and an X9100, upgraded to a Forceon DFS541305MH0T “F8U5” fan, SSD. Wish Asus still made them like this instead of the new ones where the screen can hardly tilt past 90'.
But anyway (sorry)
Asus stopped making the genuine A32-M50 6 cell and A33-M50 9 cell batteries for this and other laptops. So, I can buy used genuine batteries, which I've had good and bad luck with. Tophatphones on Ebay sent me one with about 65Wh out of 79Wh original for $10 shipped. They still have more but you may not get as lucky with the condition of the battery. Another seller gave me ones with dead cells (got my money back).

Also there are aftermarket batteries but the 1 I got (ATC/bayvalleyparts) would cut out even at a full charge if power consumption exceeded 60w or so, even with a full charge. Maybe others don't have this flaw, not sure. The voltage via hwinfo32 was fine. Anybody have good luck with aftermarket batteries while gaming (high power consumption)?

So I think for now I'll stock up on used 9 cell batteries after testing them and store them partially charged.

But before coming to that conclusion, I tried to find external battery packs, the flat Lithium Polymer ones that would work with a gaming laptop. All the ones I came across topped out at 90 watts compatible, not 120 watts that my Asus can draw, much less the 180w a G750 can!
Anybody know of any that can handle that wattage and 200wh or more?

Thanks

 

They would get to a silly size to support that kind of draw and heat dissipation and not store a whole lot of charge for that weight.

 

The genuine Asus batteries can handle around 100 watts of power, at least when at a relatively high SOC% ,like 55% and higher. Mine still has trouble if I ask of it to draw 120W at 55% SOC, voltage will dip below 10V and it'l hibernate or just cut out. A new genuine battery (which doesn't exist) might handle high draw better. An external pack has more watt hours and a larger cooling surface than the genuine batteries so internal resistance would likely be lower and cooling would be easier. But I might be missing something. There may be voltage regulators in the pack to output 19V for the laptop to use, which has energy loss.

Lithium Polymer might not have the Wh/Kg that cylindrical cells have, but phone batteries are energy dense now.

 

Yes but doing that on a regular basis will kill it fairly rapidly.

 

That's very true, the battery pack gets moderately warm on the outside of the plastic. It's mostly about the ability to use it if I need to, to handle peak power in case the GPU cranks up while on battery power, instead of it popping into hibernate or cutting out when software engages all the processors. I just bought 3 more used A33-M50 9 cell batteries for $30 to put in the fridge, should last me through a degree or two.

Would be nice for an external pack to handle peak power of 120w but of course continuous is not needed.


Anybody else get good deals on batteries for their power hungry gaming laptops? How are the aftermarket batteries?

 

How about UPS

 

The battery out of a UPS may work.

 

I use a 35AH Deep cycle battery (AGM) and a 150w Can inverter to power my notebook all night.

Not the most elegant solution though.

 

What's the total capacity of that battery? (what voltage does it put out)

 

35Ah so 35,000mAh. The inverter converts it from 12v DC to 240v AC. There are some conversion loses but its minimal.

I use a battery pack like this, connect my cigarrette jack can inverter then to my laptop power adapter. Car battery would work fine too but they arent designed for deep cycles.

As i said not an elegant solution but its how i get by when im off grid.

 

Ah you see without the voltage you can't get the true output of a battery.

A 35Ah battery at 12v is half the size of a 35Ah battery running at 24v (acer do that with their high capacity batteries, they are the same mAH but different voltages).

Anyway a bit OT there. It's a decent solution (more of a brute force approach but what choice do you have?)