Improved VW solar charger


VW has been shipping their cars to the US with small solar panels inside to keep the batteries from going dead during shipment. Dick Streefland picked one up and added a small monitor circuit to monitor and charge his battery. Batwatch is based on the Atmel ATtiny13V and measures the voltage on two sides of a resister to determine the voltage of the battery while the solar panel is charging the system.

16 thoughts on “Improved VW solar charger

  1. yay for replacing all the fuel lines right after i bought it! i almost passed out driving that thing 80 miles home with a broken gas cap and a leaky fuel line. ive been told the best thing to do is upgrade to metal aircraft fuel lines, as they dont melt when it gets really hot, althought i havnt done that yet.

  2. #2 – no it doesn’t look like you could use it without the panel. the panel provides the power to the voltage regulator to run the micro. so, you would have to provide a power source for it, and that power source also would be attempting to charge the battery.

  3. i have a better idea lets make hackaday like a proper website and bann all you idiots and then lets go one step further and put some proper hacks on OH MY GOD THEY UNTHINKABUL PROPER HACKS NEVER LOVE THE TROLL

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s