This makes it a bit difficult to hold in your hands, however because the chassis is made out of stainless steel rather than plastic, it feels more expensive. Steve Jobs announced the release of the new iPhone 4 recently, and we’re still not sure whether to regard this as a mobile device as a Tablet PC because its Apple A4 CPU is so powerful that it would rival any Tablet PC out there.įrom the outset if you look at the form factor of the device, it’s pretty clear that it’s taken lessons from its bigger brother, the iPad tablet PC, because the iPhone has swayed away from it’s previon smooth and rounded incarnations, and opted for crisp sharp corners. Specializing in 1/18 to 1/10th scale, his NiMh and Lipo battery packs have been well received. Michael Mizzi is a 30 year veteran of the electric RC car hobby and owner of Hi Power RC-an importer of the finest RC Car battery packs. So choose this option carefully and understand that higher speeds come with higher wear and chance for damage to all the components involved with running higher voltage power. The disadvantage is higher amp draw from the motor which also will create heat for the ESC, battery, and motor. Running in series, two 7.2V 1500 mah battery packs would act like one 14.4V 1500 mah battery. Series running two battery packs gives the advantage of higher top speed, and acceleration because the voltage is doubled. So a pair of 20C 1800 mah 7.4V Lipos connected in parallel would act and perform like a 40C 3600mah 7.4V Lipo. With two batteries in parallel the power draw is distributed between the two packs so that they don’t get over stressed. Parallel running two battery packs gives two advantages: longer run time and shared load. Over heating the motor will cause the magnets to loose power and render the motor unrepairable and less able to put out its original output. Like the Nimh battery packs….give a 5 minute break for every 10 minute run. Get at least a 20C rated type to prevent overloading the battery packs. Make sure that they will fit before buying….there are so many different choices on the market. To take advantage of the Lipo’s lower weight, many people find 3S 11.4V packs that fit the mini E-Revo and run them in parallel. I recommend a 5 minute break for every 10 minute run. Be careful running this type configuration, and give some time for everything to cool down. Speed does not come without compromise the ESC and the motor will get very hot……so may the battery packs if they are not the better high discharge type Nimh. The brushless versions can run upwards of 50 mph in this configuration. Traxxas does not warn against using two 6 cell NiMh packs in series….so that is a common configuration that speed hungry people run in their mini E-Revos. ![]() Traxxas warns that two 7.4V 2S Lipos should not be series connected as the voltage with be too high, and cause the Traxxas ESC to possibly overload. Another choice is to simply run one battery pack….though due to the design of the chassis, many people feel that their RC car will run lop sided due to uneven weight distribution. Whatever the choice, we must make sure that the two batteries are the same brand, type, and capacity. Parallel connected batteries add MAH (capacity) for more run time while series connected battery packs add voltage for more power and speed. So the mini E-Revo from Traxxas is an interesting chassis in that it can accept two batteries and run them either in parallel or series. ![]() So what is the best way to power these mini machines? Do we use a NiMh battery, LiPo, and what about parallel and series systems? We will break this question down for our readers and give some answers! Ok, we all know the most popular mini RC out on the market is the Traxxas mini E-Revo and its chassis sharing cousins: The Rally, Slash and mini Summit.
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