Re: Here is a good used source for 18650 batteries
One note after I did the first battery pack and I saw that the roll off voltage was around 6.00 I set the parameters 8.4 charging and 6.0 for discharging
Well I have tested 5 of them so far and they all are very very close to each other and I have already put the two and half battery packs on a cutting board for the first level the second level has two battery packs on it and now I am testing the other battery pack to cut in half for the second level once I do this I will have to wire the the battery packs together to make a 20 volt battery pack with the BMS protection board and put the charger together to charge the battery pack for the battery operated compressor I used a marine battery enclosure and a cutting board to mount the battery packs I will post some pictures of it when I get the first level wired together
The third level will have the BMS protection board with an inline fuse holder
The two half battery packs I going to reconfigure for another project and use the remaining half’s because they do not have enough tabs on one half of it but it still can be mounted on something else
I was very pleased with how the battery pack mounting went the bottom of the battery packs have two mounting round tubes that stick down about 1/4” so I drilled two round hole to accommodate the two round tubes which have a hole in the center of the tubes that are on the bottom of the battery pack and they are very secure to the cutting board used #6@1” metal screws for the mounting of the battery packs
Originally posted by sam_sam_sam
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Well I have tested 5 of them so far and they all are very very close to each other and I have already put the two and half battery packs on a cutting board for the first level the second level has two battery packs on it and now I am testing the other battery pack to cut in half for the second level once I do this I will have to wire the the battery packs together to make a 20 volt battery pack with the BMS protection board and put the charger together to charge the battery pack for the battery operated compressor I used a marine battery enclosure and a cutting board to mount the battery packs I will post some pictures of it when I get the first level wired together
The third level will have the BMS protection board with an inline fuse holder
The two half battery packs I going to reconfigure for another project and use the remaining half’s because they do not have enough tabs on one half of it but it still can be mounted on something else
I was very pleased with how the battery pack mounting went the bottom of the battery packs have two mounting round tubes that stick down about 1/4” so I drilled two round hole to accommodate the two round tubes which have a hole in the center of the tubes that are on the bottom of the battery pack and they are very secure to the cutting board used #6@1” metal screws for the mounting of the battery packs
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