Battery Reconditioning

I have some double A rechargeable batteries.Will they last longer if I wait until they are all the way dead before I charge them or does it matter.Any information will be helpful.Thank you.

If you let them discharge completely (die) before charging them again they will last longer. Try to take them off the charger as soon as they are completely charged, don’t leave them on the charger.

I have asked this question before. But does not satisfied me. I need to know the above laptops battery life. When i checked the dell website, according to them the xps 15 of 6cell battery gives 5hours and a 9cell battery gives 8hours. Is it is really gives such a battery life or is the company is giving it as fake for marketing?

the numbers given are just a guess it depends what you are doing on the computer how long they will last. if you are burning a dvd and on the internet no time at all…

I got my mac about 6 months ago and already it only lasts about 3 hours on full battery. Is there any way I can increase my battery life with out having to buy a new battery? Thank youu!

Decrease screen brightness, and have the HDD spin down when possible. ( I don’t know if you can spin down a HDD on a Mac, it is possible on Linux, which is almost like a Mac.) Close unused programs, and background programs, close widgets if you are not using them. When not using it put it into suspend mode or hibernate.

I have a crosman m74dp and it runs on 4 AA batteries. I was wondering if I could modify the wiring to be adaptable to a normal 8.4V rechargeable battery in normal airsoft guns? Also if you have any modifying tips for this gun, for example: how to make it shoot farther and harder, that would be great because I already know that with a better battery it will increase the rate of fire.

I agree with the other guy, messing with the wiring is much more complicated than you have to make it, buying AA rechargeable batteries are your best bet. http://www.duracell.com/en-US/product/rechargeable-batteries.jspx is an example of the batteries

I have 2 1.2V rechargeable batteries and a 5V power source.
Will current be lost and will it damage the power source or the battery?
It is only charging at 5mA while the rechargeable is 800mAh

Depends on several varibles, like the current rateing of the charger and of the batteries. The 5 v is too high and can overcharge and overheat the batteries and shorten their life cycle. So the charging has to be monitered. People do use higher voltage chargers to "quickcharge" their bateries, but most of those are so called "smart chargers" and divert the current from the batteries when they reach full charge and indicate that charging is done. I don’t know the mahr size of your batteries or the output of your charger and as I am using a Casio Brigade in mobile mode, ( my computer is down at the moment so this is all I have) I can’t get back to a question once I post an answer so if you add later info I can’t use it. So all I can add is try it and keep checking the temp of the batteries. As soon as they begin to get hot to the touch, stop charging them.