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Title: RC Heli Post by: Somnath Maji on May 20, 2020, 04:24:34 PM I have Nikko Sky Ace RC helicopter, which had 02 Nos. of 9.6v ni-mh 350 mah battery pack. Both are totally damaged at present.
So, where do I get the battery? If I replace the same with li-po battery (11.1v 850 mah 25C or higher mah capacity cell) - is it safe? Please, give useful suggestion. Title: Re: RC Heli Post by: tictoc21 on May 20, 2020, 07:48:02 PM Sure but 850 mah would be heavy for it.
Title: Re: RC Heli Post by: tictoc21 on May 20, 2020, 07:48:33 PM If it's 3 cell
Title: Re: RC Heli Post by: Somnath Maji on May 21, 2020, 06:49:09 AM First I would like to thank you for giving your valuable suggestion.
In 2 cell Lipo, we get >7.4v and in 3 cell we get >11.1v. But the Sky Ace cell capacity is 9.6v - so which cell Lipo pack should I choose? Title: Re: RC Heli Post by: tictoc21 on May 22, 2020, 11:18:20 PM It's better to explain if you post a photo
Title: Re: RC Heli Post by: Pundinas on May 23, 2020, 12:10:42 PM Yes!
Title: Re: RC Heli Post by: pnkyjs on May 24, 2020, 12:31:33 AM 2S would be a closer choice, because Fully charged it will be 4.2+4.2= 8.4 volts, that's closer to 9.6 volts,
3s would be 12.6 fully charged which is on the dangerous side. And you may not discharge below nominal 3.85 volts per cell , 3.85 + 3.85 + 3.85 = 11.55 which is also higher than 9.6volts so not recommended. Title: Re: RC Heli Post by: pnkyjs on May 24, 2020, 12:34:09 AM And why are you replacing 350 mAh with 850mAh ? That would be too heavy.
2S 350mAh to 450 mAh lipo should fly. Title: Re: RC Heli Post by: pnkyjs on May 24, 2020, 12:36:21 AM Getting a Lipo with a high C value would help you.
Title: Re: RC Heli Post by: Somnath Maji on May 24, 2020, 04:28:17 PM OK getting the suggested battery after lock down ends. Thanks for help, with regards.
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