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I would like to emphasize that the pigtail from Chris Moon could
physically be plugged into either of the 5s balance connectors
which Jim identifies as the "bottom" connector. If your esc is not
fully optically isolated on the ground leg and you plug into the
"upper" battery, there will be smoke. If there is a BEC in your ESC,
there will NOT be isolation. In that case, I suggest that you tag or
use nail polish to identify the correct balance connector on each
pack as you will be plugging into this balance connector whenever
you change batteries. It is also a good idea to use a switch for
each power lag and check each leg for power separately as part of
your pre-flight process. It is easy to forget plugging in the
balance connector when you start using this system plus it is
important to confirm that both legs are working before each and
every flight. Otherwise you can lose your redundancy before the
flight even begins.<br>
The Castle HV series without BEC allows you to use either balance
connector without any issues.<br>
<br>
John<br>
<br>
On 1/23/2012 4:25 PM, James Oddino wrote:
<blockquote
cite="mid:0FA541D0-1430-40BE-AE8F-F5847A3CEA0E@socal.rr.com"
type="cite">I've been using this setup for sometime and it is
working great. I have my two cell LiPo charged to 7.5 volts and
it is connected to a 6.0 volt regulator into the receiver. The
cable connected to the balance connector on the "bottom" 5S is
connected to a 6.3 volt regulator so it supplies all the current
to the system and the 2S pack never needs charging. I'm using an
800 mAh pack but it could be even smaller.
<div><br>
</div>
<div>Jim O<br>
<div><br>
</div>
<div><br>
<div>
<div>On Jan 23, 2012, at 2:09 PM, Scott McHarg wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">Guys,<br>
Chris Moon just e-mailed me about some leads that were
done at the factory. These leads run off your balance
leads to a voltage regulator and allow your main battery
pack to be utilized as a redundant receiver battery. It
is NOT meant to be a primary but it will save 20+ grams if
you're running 2 rx batteries. You still have to run the
2nd regulator for true redundancy but you eliminate the
2nd battery. These leads are factory made and eliminate
the need to make them yourself with the concern about
plugging in to the wrong cell. I know in my article, I
was pretty much against doing this as a backup but, with
Chris having this made at the factory, he has all but
eliminated making a mistake by tying to the wrong cell. I
have the link that I'll e-mail you off-list or you can
just go to his website. I don't want to break the NSRCA
list rules by advertising for him even though he
advertises with the NSRCA. The leads are only $3.99 each
and are found under the Connectors/Adapters listing.<br>
<br>
Thank,<br>
Scott<br clear="all">
<br>
-- <br>
<b style="color:rgb(51,51,255)"><font
style="font-family:comic sans ms,sans-serif" size="4">Scott
A. McHarg</font></b><br>
<br>
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