http://tuxamito.com/wiki/index.php?title=Building_a_battery_pack&feed=atom&action=historyBuilding a battery pack - Revision history2024-03-28T23:34:48ZRevision history for this page on the wikiMediaWiki 1.31.12http://tuxamito.com/wiki/index.php?title=Building_a_battery_pack&diff=381&oldid=prevDaniel at 18:27, 19 September 20162016-09-19T18:27:45Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 18:27, 19 September 2016</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The original pack consisted of 8 AA sized NiCd rechargeable batteries in series, giving 800mAh at 9.6v (9.6v = 8 x 1.2v).  Although I considered AA batteries at the end I chose AAA batteries because they are smaller.  A home made pack of AA batteries would have resulted a bit bigger, making necessary to mod the transmitter's battery holder (that is, to cut the plastic).  As modern AAA NiMH batteries hold approximately the same capacity as the original batteries, I made my life easier and went with these.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The original pack consisted of 8 AA sized NiCd rechargeable batteries in series, giving 800mAh at 9.6v (9.6v = 8 x 1.2v).  Although I considered AA batteries at the end I chose AAA batteries because they are smaller.  A home made pack of AA batteries would have resulted a bit bigger, making necessary to mod the transmitter's battery holder (that is, to cut the plastic).  As modern AAA NiMH batteries hold approximately the same capacity as the original batteries, I made my life easier and went with these.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The first step was to open the original battery, cut the connector to reuse it later, and put the old batteries y the recycle bin. Then I soldered the batteries as seen in the next pictures, joining the + side with the - side of another.  The soldering iron should be quite hot as the big size of the battery will dissipate the heat quite fast, making it difficult for the tin to keep the right temperature while in contact with the battery. I recommend to slightly scratch the surface of the battery <del class="diffchange diffchange-inline">connectors </del>with something sharp to make it easier for the tin to attach. Try to avoid overheating the batteries to reduce the chances of damaging them.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The first step was to open the original battery, cut the connector to reuse it later, and put the old batteries y the recycle bin. Then I soldered the batteries as seen in the next pictures, joining the + side with the - side of another.  The soldering iron should be quite hot as the big size of the battery will dissipate the heat quite fast, making it difficult for the tin to keep the right temperature while in contact with the battery. I recommend to slightly scratch the surface of the battery <ins class="diffchange diffchange-inline">terminals </ins>with something sharp to make it easier for the tin to attach. Try to avoid overheating the batteries to reduce the chances of damaging them.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:batterypack01.jpg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:batterypack01.jpg]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">To handle them easier, I soldered in two packages of 4 that later I hold together using tape, first each individual package, and then both packages together after soldering them.</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:batterypack03.jpg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:batterypack03.jpg]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">To finish the work solder the original cable with the connector to the transmitter.  To hold the whole package better, make it more durable and also better looking I used a wide heat shrink tubing, that I shrunk using the hot air of a hair dryer. And this is the final result:</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:batterypack04.jpg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:batterypack04.jpg]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">To attach it better to the radio I used velcro band. This way it does not move inside it.</ins></div></td></tr>
</table>Danielhttp://tuxamito.com/wiki/index.php?title=Building_a_battery_pack&diff=380&oldid=prevDaniel: Created page with "After a few years, my Futaba T6EX Radio Control transmitter's battery pack became dead, it would only hold battery for around 15 minutes, making it very dangerous to try any m..."2016-09-19T18:15:09Z<p>Created page with "After a few years, my Futaba T6EX Radio Control transmitter's battery pack became dead, it would only hold battery for around 15 minutes, making it very dangerous to try any m..."</p>
<p><b>New page</b></p><div>After a few years, my Futaba T6EX Radio Control transmitter's battery pack became dead, it would only hold battery for around 15 minutes, making it very dangerous to try any model airplane model even for short time. The options were to buy a new one or to build one myself. Obviously I opted for the second option.<br />
<br />
The original pack consisted of 8 AA sized NiCd rechargeable batteries in series, giving 800mAh at 9.6v (9.6v = 8 x 1.2v). Although I considered AA batteries at the end I chose AAA batteries because they are smaller. A home made pack of AA batteries would have resulted a bit bigger, making necessary to mod the transmitter's battery holder (that is, to cut the plastic). As modern AAA NiMH batteries hold approximately the same capacity as the original batteries, I made my life easier and went with these.<br />
<br />
The first step was to open the original battery, cut the connector to reuse it later, and put the old batteries y the recycle bin. Then I soldered the batteries as seen in the next pictures, joining the + side with the - side of another. The soldering iron should be quite hot as the big size of the battery will dissipate the heat quite fast, making it difficult for the tin to keep the right temperature while in contact with the battery. I recommend to slightly scratch the surface of the battery connectors with something sharp to make it easier for the tin to attach. Try to avoid overheating the batteries to reduce the chances of damaging them.<br />
<br />
[[File:batterypack01.jpg]]<br />
<br />
<br />
[[File:batterypack03.jpg]]<br />
<br />
<br />
[[File:batterypack04.jpg]]</div>Daniel