<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px"><div><span>Mike,</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;"><span></span>What is the fully charged voltage on the pack?</div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;">at 3.3v your packs is about 35% charged.</div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal;
background-color: transparent;"><br></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;">A123 cells have 3.6V maximum</div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;">Hobbico LiFe packs and a lot of others have 3.7v maximum.</div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;">My TP820 charges them to 7.4v.</div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida
Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;">You need to check the final voltages & cell resistance of each cell.</div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;"><br></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;"><br></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px; font-style: normal; background-color: transparent;">Ihncheol<br></div> <div style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica,
Arial, Lucida Grande, sans-serif; font-size: 14px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <div class="hr" style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); border-image: none; height: 0px; line-height: 0; font-size: 0px;" contenteditable="false" readonly="true"></div> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> "Dr. Michael Harrison, DDS via NSRCA-discussion" <nsrca-discussion@lists.nsrca.org><br> <b><span style="font-weight: bold;">To:</span></b> 'John Fuqua' <johnfuqua@embarqmail.com>; 'General pattern discussion' <nsrca-discussion@lists.nsrca.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, October 10, 2014 9:05 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [NSRCA-discussion] LiFe batteries<br> </font> </div> <div
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#yiv6469748932 </style><div><div class="yiv6469748932WordSection1"><div class="yiv6469748932MsoNormal"><span style="font-size: 11pt;">Same with me. I did all those things last night.</span></div><div class="yiv6469748932MsoNormal"><span style="font-size: 11pt;">mike</span></div><div class="yiv6469748932MsoNormal"><span style="font-size: 11pt;"> </span></div><div class="qtdSeparateBR"><br><br></div><div class="yiv6469748932yqt7813680888" id="yiv6469748932yqt08258"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0in 0in; border-image: none;"><div class="yiv6469748932MsoNormal"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> NSRCA-discussion [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>John Fuqua via NSRCA-discussion<br clear="none"><b>Sent:</b> Thursday, October 09, 2014 7:30 PM<br
clear="none"><b>To:</b> 'General pattern discussion'<br clear="none"><b>Subject:</b> Re: [NSRCA-discussion] LiFe batteries</span></div></div></div><div class="yiv6469748932MsoNormal"> </div><div class="yiv6469748932MsoNormal"><span>Very Interesting. I have 3 850mah LiFe 2S batteries I use. I just charged all three and right at the end of the charge cycle, monitoring cell voltage, one cell went high. About 2 tenths of a volt or so. So I balanced them on my balancer. Recharged. Same result. Then I put them on discharge. The closer they got to 6.6 volts the closer the cells got to 3.3. maybe 3.31 and 3.29 worst case. it seems with these batteries there will be some voltage difference at fully charged. Now I wonder if this is a characteristic of the LiFe battery or the Cheetah brand???????</span><span
style="font-size: 11pt;"></span></div><div class="yiv6469748932MsoNormal"><span style="font-size: 11pt;"> </span></div><div class="yiv6469748932MsoNormal"><span style="font-size: 11pt;"> </span></div><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0in 0in; border-image: none;"><div class="yiv6469748932MsoNormal"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Ihncheol Park [<a href="mailto:pnahobbies@sbcglobal.net" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:pnahobbies@sbcglobal.net">mailto:pnahobbies@sbcglobal.net</a>] <br clear="none"><b>Sent:</b> Thursday, October 09, 2014 5:28 PM<br clear="none"><b>To:</b> John Fuqua; 'General pattern discussion'; General pattern discussion<br clear="none"><b>Subject:</b> Re: [NSRCA-discussion] LiFe batteries</span></div></div></div><div
class="yiv6469748932MsoNormal"> </div><div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span style="font-size: 10.5pt;">I use LiFe on a few glow models and have a few other friends using LiFe on gas models. Engines are hard mounted. </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">depending on the size, about 100 to 300 mAh are used. Largest being a 30cc on a giant scale stik with 7 high torque digital servos.</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">Best way to check is using something similar to Hyperion Sentry. it shows capacity based on the pack voltage on LiXX type.</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">It is pretty close to actual. about 2
to 5% variance.</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">I am using Team Orion LiFe RX packs have up to 35C rating. Hobbico is 10C rated.</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">Minimum voltage is 3.0v per cell, so 6.0v I wouldn't fly if the pack is 3.2v per cell. I've never had a chance to fly/discharge the rx pack down close to minimum voltage. usually stop flying, charge, or replace the rx pack if the pack has about 30% left.</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">Discharge
curve is similar to LiPo. Flat and drop sharp. </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">Hope Mike is using a charger that shows mAh charge amount. much easier to calculate how much capacity is used per flight.</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;">Ihncheol</span></div></div><div><div class="yiv6469748932MsoNormal"><span style="font-size: 10.5pt;"> </span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span style="font-size: 10.5pt;"> </span></div></div><div><div><div><div class="yiv6469748932MsoNormal" style="background: white;"><b><span style="font-size:
10pt;">From:</span></b><span style="font-size: 10pt;"> John Fuqua via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br clear="none"><b>To:</b> 'General pattern discussion' <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> <br clear="none"><b>Sent:</b> Thursday, October 9, 2014 4:48 PM<br clear="none"><b>Subject:</b> [NSRCA-discussion] LiFe batteries</span><span></span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span> </span></div><div id="yiv6469748932"><div><div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span>Mike Harrison asked a question about LIFE batteries that I don’t know the answer
to but I am sure there are experts out there that do. Mike has switched to 1750 LIFE batteries in his YS powered airplane. So how many mah average would one expect to use per flight? What does the discharge curve look like and what is the cut off voltage below which you quit flying???</span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span>I run LIFEs in my electric and I consume about 60-70 mils per flight average but do not have a clue as to a 4 stroke powered plane. </span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span>Thanks </span></div></div><div><div class="yiv6469748932MsoNormal" style="background:
white;"><span> </span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span style="font-size: 16pt;">John D. Fuqua</span><span></span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span><a href="mailto:johnfuqua@embarqmail.com" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:johnfuqua@embarqmail.com">johnfuqua@embarqmail.com</a></span><span></span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span>850-974-6655 Cell</span><span></span></div></div><div><div class="yiv6469748932MsoNormal" style="background: white;"><span> </span></div></div></div></div></div><div class="yiv6469748932MsoNormal" style="background: white; margin-bottom: 12pt;"><span><br clear="none">_______________________________________________<br clear="none">NSRCA-discussion mailing list<br clear="none"><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank"
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