Charge NIMH-battery in QX7 without unplugging

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Koarl
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Charge NIMH-battery in QX7 without unplugging

Post by Koarl » Fri Feb 09, 2018 9:30 am

Hello guys!

I want to put a NIMH-battery into my QX7. Is it possible to solder an extra lead to the battery and use this for charging, while leaving the the 2s-plug connected to the transmitter? Or does this any damage to the radio?


Thanks

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MikeB
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Re: Charge NIMH-battery in QX7 without unplugging

Post by MikeB » Fri Feb 09, 2018 11:09 am

Works perfectly OK, I have such an arrangement on my QX7. The only "extra" thing I have done is to include a diode in the charging connection to prevent the charger being connected with reverse polarity.

Mike
ersky9x/er9x developer
The difficult we do immediately,
The impossible takes a little longer!

Koarl
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Re: Charge NIMH-battery in QX7 without unplugging

Post by Koarl » Fri Feb 09, 2018 11:33 am

Thanks!

Koarl
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Re: Charge NIMH-battery in QX7 without unplugging

Post by Koarl » Fri Feb 09, 2018 4:29 pm

Another question popped up:
I bought some rechargable AAs, would you solder 'em together to a pack or just throw it into the supplied battery holder?

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MikeB
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Re: Charge NIMH-battery in QX7 without unplugging

Post by MikeB » Fri Feb 09, 2018 6:03 pm

I always make up a pack, I just don't trust a battery holder, too many connections, any one of which could fail, and they tend to have a relatively high resistance.

Mike
ersky9x/er9x developer
The difficult we do immediately,
The impossible takes a little longer!


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Kilrah
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Re: Charge NIMH-battery in QX7 without unplugging

Post by Kilrah » Fri Feb 09, 2018 9:14 pm

Battery holders have several decades of experience killing models. If not already when new corrosion always ends up creeping in after a few years.

Koarl
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Re: Charge NIMH-battery in QX7 without unplugging

Post by Koarl » Fri Feb 09, 2018 9:37 pm

Ok, so I make pack!
Thanks

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