How do you charge a 10000mAh 9.6v NiMh battery bank?

Question

I have 8 brand new D cell NiMh batteries by Tenergy rated at 1.2v 10000mAh running in series. I am using them to power an N64 and a 7.5" LCD screen. The total draw is about 2 amps when running. When I try to use this portable N64, I measure the voltage and I see about 9.54v. When I turn it on, the voltage drops quickly and in about 5 minutes, the voltage gets below 7.2v and the screen stops working. I have tried to charge them before with a small 400mAh charger, but, even when I left it charging for the day that it required, this still happened. Perhaps the batteries are faulty? Or maybe the charger is incapable of charging that big of a bank? I don't know, but any help would be appreciated. Thanks!

classicsat · Accepted Answer

I would forget that, and use either SLA or Li-Ion packs.

thayne · Answer

The NiCad batteries are in all probability undesirable in the event that they gained't value. Their charging cycles are lesser than lithium ion or NiMH. yet while that's working, toss the NiCads interior the trash and use the NiMH batteries. NiCad batteries suck besides.

? · Answer

This 'battery bank' you have constructed is a start. You will need
another one just like the first. Wire them in parallel. You will need
a power supply that can deliver 12 Volts DC and a variable voltage
regulator. Set this regulator to 9.6 Volts DC. This should properly
charge your batteries without any issues. Feel free to e-me.

How do you charge a 10000mAh 9.6v NiMh battery bank?

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