Battery Reconditioning

I have 3 rechargeable battery packs, but I only need one because I have a Play&Charge Kit. Does anyone know if GameStop will buy rechargeable battery packs?

I don’t see why not…

If they do, it won’t be for much though because their notorious for buying things off customers really cheap. Which in other words means they rip you off. So if I was you I would try to sell it to someone first. And if you can’t find anyone you can sell it to Gamestop if they will take it.

If the battery capacity is 300 Ah what will be charging current in case trickle charge and float charge?
How the charging current is calculated

The method of calculating rechargeable battery charge capacity of this invention has steps to temporarily interrupt charging and calculate battery internal impedance, to calculate a no-load battery voltage by subtracting the product of internal impedance and charging current from the battery voltage when charging current is supplied, to calculate charging power by multiplying no-load voltage and charging current, and to repeatedly perform the charging power calculation integrating that charging power result to compute battery charge capacity.

Im charging a Rechargeable AA battery using a 2.4W Solar panel. The batteries are connected through a USB port. They are exposed to 6 hours of sunlight, They seem charged after, However the batteries do not retain the charge and get very quickly drained. my question is why is the battery getting drained after showing 87% of charge.

The battery is clearly not getting fully charged. You need a charge controller with your solar panel to properly control the flow of electricity. And the solar panel must put out more voltage than the fully charged battery does or else it will never fully charge the battery even with the charge controller. So you need to know more than just how many watts the solar panel can make, you need to know it’s voltage. And keep in mind that the 2.4W rating is no doubt the maximum you can get under ideal conditions. If you don’t keep moving the panel to point exactly at the Sun all the time you will loose some power. This requires turning the panel slowly all day to follow the Sun. Just setting out in the sun and walking away for 6 hours will result is less than 2.4W most of the time.

If I buy a rechargeable battery now and keep it for 1 year with no use, will it work in a year like a new?
Or, every rechargeable battery has some kind of an expiration date and it work worse even if you don’t use it?

The same question is about non-rechargeable batteries.

Thank you.

No battery (cell), whether rechargeable or not, will be as good after a year of
simply sitting around as it would be if it had been used or periodically charged.

Sanyo "Eneloop" and other pre-charged NiMH cells are nominally ready-to-use
when purchased, but may need a charge anyway, depending on specific conditons.

I have found that, generally, a cell should be drained of its useful energy on or before
the "use by" date; otherwise, it will not last as long in service as it should.
This is in stark contrast to the idea of starting to use it by that date.

Additionally, some people store unused cells in a refrigerator.
I tried that for a long time, and found that it made no difference
whatsoever in their shelf life. They died as soon or sooner
compared to those I kept at reasonable room temperatures.
Those who wish to try may experiment as they like,
but whatever else you may do, never put a cell in a freezer.

how do you remove the batteries from the rechargeable battery pack?

http://www.google.com/products/catalog?hl=en&q=battery+charger&um=1&biw=1126&bih=601&ie=UTF-8&cid=10847035981904907859&ei=HaM0Td-pCoH48AatrcyYCQ&sa=X&oi=product_catalog_result&ct=result&resnum=3&ved=0CIABEPMCMAI#

how would the rechargeable battery pack fit into the charger?

I’m not sure what you are asking. The batteries in your description would work fine as long as your controller takes actual AA batteries. There is a rechargeable battery pack made specifically for the wireless controllers and they have their own charger (you can’t take the batteries out of these packs).

http://www.amazon.com/gp/product/B000OYMYZQ/ref=pd_lpo_k2_dp_sr_2?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B000B6MLSC&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=04TTQWQ7MVPH2MTHEVHE

hope this helps.