AA 12 V Car Solar Battery Trickle Charger, AA1432 - for Vehicles and Caravans - Battery Connectors Included, Solar 4.8W, Black

Product Information

The solar LED circuit is capable squeezing out the last drop of "joule" or the charge from the cell and hence the name joule thief, which also implies that the LED would keep illuminated until there's virtually nothing left inside the cell. However the cell here being a rechargeable type is not recommended to be discharged below 1V.

Hi, thank you for everything you do to help people out! My son would like to create a science fair experiment where he can show an electric car running on a solar panel only during the day while charging a battery and running on battery only during the night. For this, we planned to have a small solar panel connected to a battery and motor in parallel (see the attached drawing).

When this BC547 conducts it enable the TIP127 to switch ON, which in turn allows the solar panel voltage to reach the battery and begin charging it. Let's assume in the diagram, the panel open circuit voltage to be 20V and the battery to be rated at 12V. Here we employ an identical design for the sensing of the battery levels and for enforcing the required switching of the battery across the solar panel and the connected load.

Specification: Peak Power Output: 2.4 watt, Peak Volts Output: 12.7 volts, Optimum Working Current: 0.13-0.2 amps.

Sorry to bother you but I know about your capabilities and expertise in electronics and sincerity to help and guide the beginnings like me.I have seen this circuit some where for 12 vdc. Aside from charging your car’s battery, there are a number of useful features that you should look for in a portable battery booster. Look and see if it has a torch, most do, and it can be invaluable if you’re stranded at night. If you suspect your car’s battery might be at a low point, it will be worth investing in a battery tester. This enables the battery to get the charging voltage through a transistor emitter follower voltage regulator.