Difference between battery chargers?

This is putting the "type" (NiCd, NIMH....etc) aside unless it matters ? ! ? and yes I do know that there are many mah standards such as 1000-1800 AAA or 2000, 2200, 2500, 3000 AA blah blah,... I am using 2000mah and 3000mah as an example From...

My battery won't charge over 15% I've tried 3 different chargers no difference can someone please help me out here!

1.)A 8.7 resistor and a 5.3 resistor are connected in series with a battery. The potential difference across the 5.3 resistor is measured as 12 V. Find the potential difference across the battery. answer in V 2.)A 7.3 resistor and a 6.4 resistor are...

I have a motor home with an auxilliary battery under the front seat. It is charged by the engine battery when the vehicle is running and is used to power the internal electrics such as lighting and fridge, without draining the engine battery. The present...

Automotive battery charger that will not charge a fully discharged battery. It says in the manual to take the battery to an automotive center to test battery. It is a new battery, we just left a light on and totally discharged the battery. I thought...

I recently moved to the London from Australia and brought with me some Duracell rechargeable batteries for use in my mice. However, I didn't bring my charger with me as I was intending to buy a new one from here. But while I have seen Duracell batteries...

I want to purchase a rechargeable Li-ion for my XHA1 (love it!). Was wondering if the non-name brand is just as good as the Canon brand battery? Could there be any difference besides the name itself? As long as the voltage and Mah are the same, I should...

I have a NIKON COOLPIX P510. I am using the included CHARGING AC ADAPTER EH-69P to charge the also supplied EN-EL5 battery. I also bought an EXTRA EN-EL5 battery for spare. After reading the manual of this spare battery, I found out that you can only...