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Does your electrical device last a short time when turned on, with a low battery? Make a super battery pack at home using BMS and 18650 lithium battery. Watch and learn everything, extremely detailed video. Ideal for (JBL radio, electronic projects, electric bike, electric car, screwdriver ...) Materials: 1 - BMS (In the video I explain which one is best for you) - 18650 lithium battery (In the video I explain how many are needed) - charge meter makes it even more professional * OBS: Complete video teaching everything how the BMS works, how to connect 18650 batteries in series and in parallel, how to double the battery life, how to connect to the project, how to charge, mathematical calculations and much more ... ???? SOLAR ENERGY COURSE (PHOTOVOLTAIC PANEL): https://hotm.art/lRZ02B ???? EXCELLENT ELECTRONICS COURSE: http://bit.ly/2ogowQp ???? EXCELLENT CELL PHONE REPAIR AND MAINTENANCE COURSE: https://hotm.art/JNNPRyo ???? EXCELLENT 3D PRINTING COURSE: http://bit.ly/2RYsyc5 ???? EXCELLENT ARDUINO AND ROBOTICS COURSE: http://bit.ly/2knhzvG