Can we use old and new batteries together?

  • Thread starter guy3288
  • Start date
  • Tags
    Batteries
In summary, using weaker or used batteries in electronic devices such as a computer mouse can cause the pointer to become "sticky". It is not recommended to mix old and new batteries as it can affect the overall performance of the device due to differences in terminal voltage. Additionally, using rechargeable batteries may be a better option as they can save money in the long run and are more environmentally friendly. However, rechargeable batteries may not be suitable for devices that have a fast self-discharge rate, such as a remote control.
  • #1
guy3288
10
0
My computer mouse uses 1 AA battery and when the battery is weak, the pointer becomes "sticky".


i keep these weaker batteries aside to be used in other gadget like TV or aircond remote controls. These gadgets require 2 AA batteries.

If i were to use 1 brand new AA battery and another, a weaker used battery, in the remote control, would the mixture of 1 new and 1 old batteries cause the new battery to drain its power faster?

Is this a good idea to fully utilise the residual power left in the weaker/used battery?


Thanks alot.
 
Engineering news on Phys.org
  • #2
Do you have a battery tester so you can keep track of which battery is good, partially exhausted or dead?

It is not a good idea to put old and new together.
Since most multiple battery installations are in series there will not be increased current draw, if anything it will be slightly less due to the lower terminal voltage of the partially exhausted battery.
It is the terminal voltage that will be your problem since most electronic gear is quite sensitive to batttery voltage and even a small drop will cause poor or mal function.

So if you must, put a pair of used batteries in the remote, this will be OK.
Better put them into a handtorch.
 
  • #3
thanks for the info.
 
  • #4
Why not use rechargeable batteries? It will solve your week battery problem, cost less over time, and its better for the environment.
 
  • #5
Rechargeables are fine in the mouse, it has a bunch of voltage regulating circuitry to drive the LED and sensor.
You might find that in a remote they self-discharge too quickly. Some rechargeables batteries can lose a couple of %of their charge a day even when they aren't being used.
 

What are the potential risks of using old and new batteries together?

Mixing old and new batteries can lead to uneven power distribution, leading to decreased performance or even damage to devices. Additionally, old batteries may have corrosion or leaks that can affect the new batteries.

Can different types of batteries be used together?

No, it is not recommended to use different types of batteries together. Different types of batteries have different voltage levels and capacities, which can result in uneven power distribution and potential damage to devices.

How can I determine if old and new batteries can be used together?

The safest option is to avoid using old and new batteries together. However, if you must, check the voltage and capacity of each battery and make sure they match. Also, check for any signs of corrosion or damage in the old batteries before using them.

Is it safe to mix different brands of batteries together?

It is generally not recommended to mix different brands of batteries together. Different brands may have different voltage levels and capacities, which can cause uneven power distribution and potential damage to devices.

Can using old and new batteries together affect the overall lifespan of the batteries?

Yes, using old and new batteries together can affect the overall lifespan of the batteries. Uneven power distribution and potential damage can decrease the lifespan of both old and new batteries. It is best to use batteries of the same type, brand, and age to ensure optimal performance and longevity.

Similar threads

  • Electrical Engineering
Replies
15
Views
1K
Replies
1
Views
2K
  • DIY Projects
Replies
28
Views
2K
  • General Engineering
3
Replies
76
Views
8K
Replies
2
Views
5K
  • Electrical Engineering
Replies
21
Views
5K
Replies
13
Views
2K
Replies
8
Views
7K
  • Computing and Technology
Replies
10
Views
4K
Replies
11
Views
2K
Back
Top