Need help on repair of laptop battery


Warning: count(): Parameter must be an array or an object that implements Countable in /home/styllloz/public_html/qa-theme/donut-theme/qa-donut-layer.php on line 274
0 like 0 dislike
7 views
Have battery from Acer 14.8 V 4000mAh
When an autopsy discovered 8 cans.
According to my calculation, each Bank 500mAh.

On dealextreme is about the same banks, but with a capacity of 2700мАч.

Would like to try to replace the old Chinese without changing the wiring.

If you look closely at the photo, you will see that there is a 4th plug under banks, i.e. variations in the battery set 12 cans.

So you get 12*2700мАч=32400мАч about 8 times more volume and following this logic, if earlier, the battery held 2 hours Autonomous operation, switching to a new — 16h will keep.

But there is a difficulty in this case to do the wiring and how all this will include the controller.

Controller as with all rechargeable batteries especially do not mind, it is important that when the rechargeable battery snaps into the laptop — the laptop is not lost.

image
by | 7 views

6 Answers

0 like 0 dislike
In Your laptop has a charger. If the charge current equal to 1/10 of the battery capacity, then, theoretically, the charging time will be 10 hours, but real time, this current load is 16 hours. Some chargers can stop the charge, or time, or temperature, or the amount of other indicators. So instead of installing 2700мАч banks 32400мАч, you will not get the desired, because the charger you are changing. The charge time can be roughly calculated using the following formula: charging Time (h) = 1.4 x Capacity(mAh)/Charging current (mA). If You correctly install the banks, observing the voltage, the charger most likely will not burn, but the charge time will be very large, and this is can burn. Suggest you read the literature on lithium-ion batteries capacity, calculating the time of charge and discharge (just copy this in the search bar of Google or Yandex and you'll find a lot of information to read)
by
0 like 0 dislike
and if you get 12 cans with DH for 2700мАч, connecting the three in parallel and then in series, will receive a capacity of 2700*3 = 8100мА. Really quite about 6-7Ah should be.
by
0 like 0 dislike
In your case, each Bank 2000 mAh, so charge time for a lot of will not increase. And given that this batteries with dx, then with high probability, still a decent decrease :)
by
0 like 0 dislike
Capacity depends on the connection method jars? :) From the geometry depends on the output voltage, not capacity. Strictly speaking, you need amp-hours multiplied by voltage to obtain the absolute value of the energy capacity.
by
0 like 0 dislike
Well, Yes. Parallel connected banks — increasing the capacity of, the series voltage.
by
0 like 0 dislike
Capacity consider the number of circuits, as the circuit is discharged all at once. Spell capacity = cell capacity in number of circuits. In the picture the most common 18650 cell. 3.7 volt, 2700 mah but can not be sure. They are the standard 2600. And the sellers in the left field lie shamelessly using that to check few can. In the forehead to solder you can, if you put obviously the greater capacity of the cell or more circuits are doing. View the battery voltage. If 7-8 volts, then add them quietly. If about 15, then add nothing. Because there are two chains of 4 cells.
To put the cells smaller than the original fraught. Can ignite from overcharge (don't know how it in Russian correctly. Pereskazyvaniem type). Or have the brains to rule the battery. Doable, but a pain in the ass. It will be easier a new battery from China to order.
by

Related questions

0 like 0 dislike
3 answers
0 like 0 dislike
3 answers
0 like 0 dislike
3 answers
0 like 0 dislike
3 answers
0 like 0 dislike
3 answers
110,608 questions
257,186 answers
0 comments
28,049 users