Technical info re paramotor batteries. 

I got couple of emails asking how long should one charge the batteries and how would one know if they are fully charged? So here you have it. First get hold of electronic multimeter that can measure electrical voltage in the 0 to 15 V range. Wal-Mart sells very nice handy multimeter for about 13 $ worth every penny. It is in the automotive section and it is yellow just in case you go looking for it. Once you have it measure the voltage on the charging connector. It can be anywhere from 0 to about 13.5 V. If it is 0 it may be because your fuse is blown. Replace it with 10 Amp fast acting fuse and re-measure. Got anything? If not, your batteries are completely dead which I doubt or you have a bigger problem such as broken wire inside the battery box. In most cases you will measure anywhere from 10 - 13.5 V  So if you are below 13 V put your battery pack on charger. What you want to do is check periodically as the voltage rise to find a point where the voltage will not increase anymore. It should be anywhere between 13 and 13.5 V. Once you see that voltage is not increasing anymore stop charging as overcharging batteries is not so good. Also remember that even with fully charged batteries the paramotor will not turn over unless the prop is mounted especially on the Simonini based units. The starter needs the inertia of prop to crank over the compression point.  

Charge with 300 mA max. I use adapter from Canadian Tire. It has the ability to set different voltage 3, 6, 9, 12 V.  With max current 300 mA. It is abou $ 13 Cad. I keep it set at 12 V. If not loaded it provides about 21 V but under load it goes down to about 14 V.

Once your battery pack is charged you must remove the charging connector from the battery pack it self. If you just pull out the adapter from the wall outlet and the charging connector will not be removed it will slowly drain your batteries.

Good luck with your batteries.  Andre

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