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Guys, Came across this article on SgCarMart that I thinks explains well for the 3 main types of car battery today. http://www.sgcarmart.com/news/events_features.php?AID=3534 Now we know what type of battery to replace for our individual cars.

This is how an energy-absorbing slinky falls when dropped This is how the internal mechanism of a lock works Beans’ tendrils slowly rotate to find solid supports to climb This clip illustrates how small the earth would be compared to NML Cygni, the largest known star This is what an egg looks like underwater without its shell Here’s what happens when you dump a pot of boiling water into -41C air This is how a ladybug unsheathes its wings and lifts off This is how military helmet camouflage is applied Dogs cup their tongues like this to lap up water A cheetah uses its tail to counter torsion and keep balance as it chases its prey The chrysopelea, or flying snake, can glide as many as 100 meters through the air The sun never sets during an arctic summer – here’s what a “day” looks like These boxes demonstrate why the Pythagorean Theorem is true One theory claims that the Easter Island statues were “walked” to their places This gif shows the development of the human face in the womb Here’s how chains are assembled This gif demonstrates why snake venom is deadly How to remove your computer monitor’s polarizing filter Sulfur hexaflouride, a gas much denser than air, is poured into a boat that is floating on it Some octopuses have uncanny and amazing camouflage skills source : http://www.eyeopening.info/2014/04/26/20-educational-gifs-will-teach-textbook-can

Guys.. if you all have time .. it is good to watch this 1 hour clip Can learn a lot of lesson from that clip.. [thumbsup]

I'm looking for educational kits on basic principles like: Motor, Hand-cranked generator, etc. I've taken a look at Tamiya kits but found none suitable. If possible, the kit need to have large parts to put together, so that the components are visible and suitable to use for showing the working principles. Any ideas what brand, line of product that offers this? Thanks for help/suggestion.