Typical rip off from the manufactures, battery for lap top 12 months old Compaq V 6000 B4000 in Australia, Thailand B3800

Well this little black duck spend 40 hours at TAFE college and learnt basic electric 101 15 years ago , well worth it for what I learnt.

Now for replacement battery, Sorry Big boy from Multi nationals, makita, lap top, any thing that uses a battery, I learnt not to pay for your expensive rip offs

3 x 6 volt battery baht 600 connected in series, producing 18V, just enough for lap top.
Baht 100 for nice Blue cover from local washing shop
Baht 100 for some wire and connectors

Total cost B800 for a 10amp battery for the lap top, thats a wooping B3000 saving , less my time, and the fact THAT i GET 10 HOURS OUT OF THE BATTERY

Photo: battery assembly ready to power up the lap top for 10 hours, thats 8.5 hours longer that the orginal one , for a 1/3 cost

battery have been glued together



Photo: of battery in soft blue case, fits nicely into carry bag with 2 mt lead

I have a nice Asus lappy that I bought from Oz to LOS.

I have managed to miniaturize a Honda genset to power it, which I carry around in a wheelbarrow if I need to go portable

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House Builder,Fence builder,Trailer Builder,Lap-Top Long Life Battery Builder and Teacher, anything i left out ? and please don't tell me you made the light blue case also....many talents you have Aussieboy.

laptop would be for carrying convenience. so now you have 2 bags to carry, one for laptop, one for battery

although, great for the home

Are the batteries re-chargeable? One of the reasons I initially bought a Compaq was the 3.5 hrs battery life. The idea was for the kid to watch movies etc. on the regular journeys we make to the coast. However, the battery life was at best 1.5 hrs when watching movies, now it's about 20 mins just playing Free Cell.

Oh, and does the carry case come in any other colour?

laphanphon wrote:laptop would be for carrying convenience. so now you have 2 bags to carry, one for laptop, one for battery

although, great for the home

No, Its just 1 bag, battery fits into lap top bag as shown by photo, just 2 kilo extra weight , but well worth it

Gallowspole wrote:Are the batteries re-chargeable? One of the reasons I initially bought a Compaq was the 3.5 hrs battery life. The idea was for the kid to watch movies etc. on the regular journeys we make to the coast. However, the battery life was at best 1.5 hrs when watching movies, now it's about 20 mins just playing Free Cell.

Oh, and does the carry case come in any other colour?

Fully rechargable batteries, case was made to match the little boy scooter\\I presume your journey is in a car, use the cigarett lighter outlet to charge your laptop

beer monkey wrote:House Builder,Fence builder,Trailer Builder,Lap-Top Long Life Battery Builder and Teacher, anything i left out ? and please don't tell me you made the light blue case also....many talents you have Aussieboy.

Government safety officer, licensed also,

When you work in the the bush, you need to do every thing your self, and No I didn't make the case, I left my 1980 model 7tp singer sewing machine at home, in my tool box, which is a 20' shipping container

Fully rechargable batteries, case was made to match the little boy scooter\\I presume your journey is in a car, use the cigarett lighter outlet to charge your laptop


I was told not to use the car to power up/recharge the laptop. Power surges apparently.

Gallowspole wrote:
I was told not to use the car to power up/recharge the laptop. Power surges apparently.

The manufactures of laptops won't make any profit if people stop buying batteries, highly expensive item, so they wont recommend you use car outlet,

I have had no problem recharging my laptop battery from my car, but never turn the computer on from the car out let WITHOUT a surge protection device, When I am not driving my car I use the outlet, example when I arrive at a job site, and turn the car off, I use the car out let many times with out any problems, before I start the car again to go to the next job , I disconnect the cars supply and run off the laptops batteries.

So buy a charger with a surge proction, and you can use the lap top while the car is running, or buy a seperate battery like I use




An in-car switch mode power supply / charger. A universal power adaptor allowing you to charge laptop batteries while on the road. Comes complete with 6 different adaptor plugs to suit most applications : 3.5 x 1.35 (NH) / 4.75 x 1.75 (NJ) / 5.5 x 1.75 (NAB) / 5.5 x 2.1 (NE) / 5.5 x 2.5 (NG) / 6.5 x 1.0 (NAA)

Protection against short circuiting and power surges
Lead length adjustable, can be wound around the adaptor
Rotary switch for voltage selection
Input voltage 12 - 13.8Vdc
Dimensions 160 x 70 x 30mm
Output voltage 15 / 16 / 18 / 19 / 20 / 22 or 24Vdc (Selectable)
Weight 310g
Max. current 3500mA

Thanks for the info AB. Much appreciated.