funnyhacks.com So you’ve done all the little optimisations to make your laptop last an extra half hour. Wireless is off. The screen is so dim that if you turn it at just the right angle you can read it. You’re even using the built in nipple mouse rather than an external one. D’oh! It ran out of battery anyway! OK, go get 20 AAs and we’ll get to work.
Video Rating: 4 / 5
rechargeable 18650 batteries from old laptop battery. Recharger for these, cheap, free shipping here: www.dealextreme.com
Video Rating: 4 / 5
like ur glasses
@irulethe70s Currently 3, although I may lighten up for the move. The oldest is a 486 with 8MB Ram. I’ve used this hack on 2 of them.
How many old laptops do you have?
By the way, video responses are welcome!
If you’ve had a go, I’d love to see it.
@TabalugaDragon Short answer: I don’t know.
Long answer: I have an Asus eee 701 which is said to be reasonable. I consistently get 3-4 hours on that depending on what I’m doing with it. It has a 5200mAh battery, but the interesting thing about this one, is that it’s 7.4v instead of the normal 10-12ish volts. So it holds 7.4×5200=38,480 watts (if I’ve done the calc correctly;) ) While my thinkpad, for example is only 4800mAh, yet it’s at 10.8 volts, so it holding 51,840 watts.
@ksandom40 Thanks for reply! I have cheap Asus PRO52RL which drains a lot of power
but 3 years ago I had samsung (I don’t remember exact title) which drained much less power, because it has battery 4000 mAh, and when I bought it it worked 3 hours, and asus I have now had 4400 mAh and worked only 2.5 hours on this battery, and now decreased so much works only half hour max
so obviosly samsung has better energy saving system
which laptop can you recommend with best energy saving?
@TabalugaDragon The first laptop I did this on an old HP omnibook 500. It lasted over 4 hours on 20 2500mAh batteries. The thinkpad in this video lasted a couple oof hours on 20 equivilent 2500mAh batteries. So it depends a lot on the power requirements of your laptop. I’ve posted a lot more information that’s linked in the description. But always happy to answer questinos
For how long can it work on this amount of good NiMH rechargable batteries?
@rrhade Thanks
I’m currently filming the next series, which I hope to start releasing at the end of July. It’s going to begin with a BANG! 
a battery from a dual core fujitsu siemens with 10 v 4800 mah .i ‘m getting 3-4 hours of intense office.
I enjoy watching your videos great work !
@rrhade Nice
I considered doing it that way, but I wanted to be able to swap between the original battery and the battery pack I made without rebooting. The way you’ve done it will almost definitely work more efficiently since that input is designed for a less abundant power source, so it should be more optimised for efficiency, while the jack I’ve used is more likely to be a swiss-army-knife of power supplies…. (This is a massive generalisation!)
i’m using the same hack on my thinkpad 600 .The original battery was bad , so i used some battery cells from another laptop battery .I cant use the internal chip from original so i only used the cells to power up.I recharge them with the ac adaptor + to + and – to – .
@tribalmasters Exactly! Some laptops detect the exact model of the power supply and will power off immediately during POST if they can’t detect what they want. (I’ve seen some dells and an HP do this). The way I get around it is to get past the BIOS on the normal battery and then everything else can happen on the AAs through the power supply socket. It may be easier to use battery socket entirely instead, but I suspect the laptop will complain about missing ACPI facilities.
Give it the right volts&s and it is happy! AA batteries happily power my USB toys so I guess my Thinkpad wouldn’t mind!
mAh is not milliamps (mA) its milliamp-hours which knowing its at 3.7 volts is a measure of stored energy in a battery:
Q=charge I=current V=voltage w=work or energy
w=QV Q/second=I current*time = Charge w=current*time*voltage
current*time is measured in Amp-hours or Ah. a mAh is a thousandth of a Ah.
@scrambler008 I sent the website link to your inbox on your profile, I could not post a link here on the comments section for some reason. Let me know if you do not get the link
@alaskanalain
I have a little problems… I need that tiny magnets, It wont fit on my radio without it. Can you tell where can I get them and what size are they?I need a dozen of them!!! Thanks…
@scrambler008. No these are bigger. I prefer these to AA but you can get a AA size battery that are 3.7 volts each instead of 1.5, you may be able to modify your gadgets to run on these but that might be risky. You do get little flashlights that can run off the AA size Lithium or regular AA, they have a voltage regulating chip. These are also available on the website if you follow my link at the top of the page or under my picture or video.
@scrambler008. No these are bigger. I prefer these to AA but you can get a AA size battery that are 3.7 volts each instead of 1.5, you may be able to modify your gadgets to run on these but that might be risky. You do get little flashlights that can run off the AA size Lithium or regular AA, they have a voltage regulating chip. These are also available on the website if you follow my link at the top of the page or under my picture or video.
Is that same size with a AA batteries???
Yaeh but you can’t discharge lipos (li-ion) below 3V or they will die.
AW Ruller !
my bust….found the site! Cheers.
Where did you purchase the little one for $15 w/ batteries. that’s a really good price. I have several lights with Cree qe5 LED’s. Thanks!
make a review of your ibook!!!!!!!!!!!!!
i would choose the TrustFire All-in-One Charger (for 10430/10440/14500/16340 /17670/18650/CR123A)
oder the ultrafire wf-139 they are the best
i need thos red ones and green for my lazer