音箱電池不耐用？用18650鋰電池製作一塊，再也不用老充電了 #我愛電器維修

hello friends This is a square dance sound His battery is not durable Let's make him a battery today The original battery is no longer durable The customer disassembled it by himself and threw it away We use four 18650 batteries Add a 7.4 volt charging protection board make him one Battery Originally two sections The capacity of the two sections is relatively small short time We directly use four sections The method of making is very simple We can directly solder it up with a soldering iron. First put the two batteries to it and connect them Then we solder Negative side Actually no spot welder It's easier to solder with a soldering iron. us Give him the same two batteries and connect them Both sets of batteries After welding we tape him fix him This is negative and this is positive Let's wrap it with tape Now it's 3.7 volts per bank we string it together will become 7.4 volts Then we hook it up positive and negative wires The negative pole is here The positive pole is also connected to one then on the back of this where they connect let's connect another line There are three lines We need to connect this charging protection board now Take a look at the battery pack protection board There are 5 lines in total We call this B+ the positive pole of the battery we'll solder it on Then this b- is the negative pole of the battery this yellow line We are connected to this bm side The middle two are the output voltage Output this plus sign is positive The minus sign is the negative output It's like this after welding the middle two It is an output and it is also an input is public we use now Wrap him with insulating tape play a protective role Now put this battery I've put it on If you meet friends like this at home Audio battery non-durable case You can modify it according to my method Then we boot up and see boot is no problem Welcome to Kim Jong Audio USB Playback Well friends, today's video is shared here see you next time