That charger is intended to be used from the battery of your car. That is why it has clips.

You can probably take 20 charges off your car battery without any concern at all, and likely much more.

I have flown multiple electric planes at the field for 6 hours, running 2 chargers to charge battery packs in the 900 to 2200 mah range andNEVER had a problem with my car battery. I have done this when there have been 5-10 electric pilots at the field and I can't remember anyone needing a jump start.

Now if you are charing multople 6000 mah packs to get one fiight with a large plane, then maybe Imight get concerned after 4 or 5charges, but not for your airplane. And if you are concerned, then start your car and run it for 15 minutes after 5 charges to refresh the car battery.

The only use for that 7A batteryis for your benchtop. I use an auto "jump start" booster box for my bench side charging. I pult the charger in for the "jump start" box, then I attach the battery charger to the jumper clampsand I charge in my shop. But that is only for a limited time, if I am doing work in the shop. Otherwise all my charging is done from my car battery.

You can get comments from electric airplane pilots in the electric airplane forum.</p>