This calculator gives a good estimate for Lithium Ion, Lithium Polymer, NiCad, and NiMH batteries. You can easily calculate an equivalent C value for the recommended maximum current by dividing that current by the pack capacity in Amp Hours. This means that 25C is the nominal discharge rate and 40C is the maximum burst discharge … Too low can not to reach your standard current to hamper performance, too high to waste your money even burnt and kill other parts. LiPo … It is designed to calculate the maximum battery charge time for any given chargable battery, based on the entered information. These cells deliver approx. Battery Discharge: From lipo battery warnig will let you know that be too dangerous and be permanently damaged when voltage levels become lower then 20% and fully discharged. LiPo Battery mAh or capacity . If your device does not sleep, then simply set the sleep time to "0". Example: Calculate the rated energy and charge stored in a UPS 12 V, 8 Ah battery and its run time if it discharges at the 2C rate. Introduction A LiPo battery consists of multipe cells. Without making you read the tutorial referenced above, some batteries have a big change in capacity based on how fast you discharge them. A 4S LiPo would therefore supply 14.8V. This can be used for Raspberry Pis, Arduinos, ESP8266 Wifi modules like Wemos, Huzzahs, Feathers and so on. The calculator will calculate the missing value of the first three entries; one must be left blank. This specification is labeled right on the front of the battery pack. This is my attempt at a LiPo-based battery pack for "Classic" HP Calculators, specifically HP-35, HP-45, and HP-55 and HP-67. Use only the spec listed value. Apart from the cells, a discharge rate is defined by the letter 'C'. For Laptop batteries with 11.1V 4.8Ah battery pack, it commonly has three 3.7V 18650 battery cells in series (3S) to achieve a nominal 11.1 V and two in parallel(2P) to boost the capacity from 2.4Ah to 4.8Ah. For calculator you have to take the battery’s capacity in amp hours, to convert from mAh to Ah, battery capacity divide by 1000. Battery capacity is typically measured in Amp-hours (Ah) or milliamp-hours (mAh), although Watt-hours (Wh) is occasionally used. Most batteries cases say something like "25C to 40C" discharge rate. After you knowing battery discharge rate calculator formula, it become very easy to find just about whatever battery you want, never too high, and never getting too low either. The material and Production technology will have an effect on the lipo … The original NiCd packs are all dead by now, and rebuilding them is difficult - assuming you can even find a pack to rebuild. Calculate the estimated battery life for your next diy electronics project. Not so good for alkaline, carbon zinc, lead acid, lithium thionyl chloride, and coin cells. Many 18650 battery packs may consist of a combination of series(S) and parallel(P) connections. The Small LiPo Calculator is identical to the normal Discharge Calculator except that it displays the Maximum Current to 0.1Amp. I thought it would be fun to use a rechargeable LiPo battery, and include the circuitry to re-charge via USB as well. Using the RC LiPo Battery Pack C Rating Calculator . simple calculator for estimating a (LiPo) battery's life. if size are given or can be checked by a ruler, we can then get the battery capacity.The size of Lithium polymer battery has a great impact on its capacity, that’s the thickness, width, and length of a battery. To use the calculator, 3 pieces of information is needed. Battery Life Calculator This battery life calculator estimates how long a battery will last, based on nominal battery capacity and the average current that a load is drawing from it. All calculations for efficiency loss will be done no matter which value you are trying to calculate. For instance, 1800mAh/1000=1.8Ah. 3.7 Volts. Enter the capacity of your battery in to the first field within the calculator. This battery energy and runtime calculator determines the theoretical capacity, charge, stored energy, and run time of a single battery and several batteries with the same characteristics connected in series and in parallel to form a battery bank..