Battery Voltage and RPM’s
This is in addition to the previous post about LiPo batteries. You may be wondering what the higher voltages found with LiPo batteries will do. When comparing LiPo to NiMh or NiCd batteries you will notice that higher voltages are readily available. With NiMh cells you would need 18 cells wired in series to achieve the 22 volts that a 6S LiPo can supply. Check out the amount of cells used here:
Now consider that all these cells could be replaced with two of these:
This Thunder Power 5000mah 4S 14.8v LiPo battery weighs well under 1 lb and is capable of delivering an amazing 250 amps of burst current! It will also deliver 125 amps continuous! Not only would two of these batteries weigh less and take up less space, they would also out-perform the NiMh cells, no comparison.
What will the higher voltage LiPo batteries do for my performance? Well typically speaking higher voltage will directly translate to higher RPM’s and higher RPM’s usually translates to higher speed and more power, or more torque. With RC Airplanes it will mean more prop speed, and possibly require changing your prop to achieve the desired results, but ultimately giving you more power and speed, and typically longer run times. For RC Cars and RC Trucks, whether you’re talking on-road or off-road, higher voltage will give you higher top speeds and greater acceleration. With RC Rock Crawlers higher voltages will allow you to gear down without loosing the needed wheel speed, ultimately giving you better low speed control and torque without sacrificing top speed, I know top speed typically isn’t a big concern with RC Crawling, but some wheel speed is necessary for certain obstacles and climbs, and some drivers actually prefer to have higher wheel speed. Now for RC Boats higher voltage translates to greater prop RPM’s and that translates to higher top speed and faster acceleration. Now who doesn’t want a faster RC Boat? LiPo battery technology and brushless motors have pushed RC Boats well beyond the 100mph mark, and they will likely keep taking the record higher and higher as technology improves.
Whatever area of RC you may enjoy, you could most likely experience performance gains and longer run times if you switched to LiPo batteries. Check out the awesome selection of LiPo batteries and chargers RCSLOT has to offer. Batteries can be found in the RC Airplanes Batteries category and also the RC Car Truck Batteries Accessories category. You will find batteries of all shapes and sizes in these two categories along with chargers and accessories for batteries. Always feel free to contact RCSLOT if you have any questions.