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-   -   5 cell hump pack question (https://www.rctech.net/forum/radio-electronics/836936-5-cell-hump-pack-question.html)

GAJ 09-16-2014 06:06 PM

5 cell hump pack question
 
I have purchased a used nitro R/C. It has a 5 cell pack. Each battery in the pack says 1.2 V 1000mah ni-mh. I cannot make out the manufacturer.

With a multi-meter, how do I know if the pack is good?

Voltage is at 6.2

Electronics worked when purchased after a quick 5 minute charge on a "quick charger"

Thanks

xrayracer1 09-17-2014 12:26 AM

5 cell packs whether they're flat or hump packs have a minimum voltage of 6.0 volts. So 6.2 volts means the pack is ok.;)

GAJ 09-17-2014 06:07 PM

What should the voltage be fully charged?

How long should the recharged battery last while powering throttle and high torque steering servo. Tough question I know, but I have no idea.

2uzferunner03 09-17-2014 07:38 PM

Just get a new pack if your that unsure about it. Make sure you have a failsafe if you do decide to use it. 1000mah really isn't much and won't last long anyways, maybe 10-15 mins on a used pack depending on the amount of power your servos draw.

GAJ 09-27-2014 01:54 PM

Me again...
Cell pack is reading 6.6V, but servos only work for about 1minute. Afterward, pack still at same voltage. Swap in my 4 x 1.2 rechargable AA's and all is good for a long period of time.

Is pack dead? Is there a way to test?

2uzferunner03 09-29-2014 03:15 PM

That's how every nimh battery I've ever had ended it's life. Voltage okay but no oomph even of you get it to take the rated mah.


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