How might you use a 13+ vDC Bioenno battery with a LNR Precision Mountain Topper QRP ham radio transceiver? The Mountain Topper is rated for 5.5 to 13vDC maximum, so the voltage of the Bioenno battery needs to be reduced. A 1N4007 silicon diode in series with the positive wire will provide enough of a voltage drop across it to lower the full charge voltage of a Bioenno battery to approximately 12.9vDC. The diode needs to be installed in a specific manner, as explained in subsequent paragraphs.

Correction: Twice, I called the Deans connector an Anderson Power Pole. The Deans connector is the smaller of the two. There is male and female. The Anderson PowerPole has a red half for positive and a black half for negative, but there is no male or female.

The video doesn’t show the diode. It is covered by heat-shrink tubing. But, all you need to do is solder the non-striped side (anode) of a 1N4007 diode to the wire that you will crimp or solder into the red half of an Anderson Power Pole. Solder the striped side of the diode (the cathode) to the positive terminal of a female Deans connector. Crimp or solder a wire to the black half of the Anderson Power Pole, and solder the other end of this wire to the negative terminal of the Deans connector.

I use a Deans connector on the radio side. This also allows me to power the radio with an 11.1vDC LiPo battery, as an alternative to the Bioenno. LiPo batteries are popular with RC cars and the batteries are available with a Deans connector installed. The 11.1vDC LiPo batteries typically charge up to approximately 12.5vDC, which is perfect for the Mountain Topper radios.

I applied heat-shrink tubing over the finished wiring to keep the diode from being exposed. You could use electrical tape if you don’t have any heat shrink tubing.

In case you are interested in the case I use to carry the Mountain Topper radio, I will paste a link below:

Portable Carrying Case Bag for... [ Ссылка ]

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