#19 in Battery holders
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Reddit mentions of Sackorange 10 pcs 1 x 3.7V Battery Holder,18650 Battery Storage Case Plastic Box Holder Leads with 1 Slots for 6" Wire Leads (10 pcs 1x18650)
Sentiment score: 1
Reddit mentions: 1
We found 1 Reddit mentions of Sackorange 10 pcs 1 x 3.7V Battery Holder,18650 Battery Storage Case Plastic Box Holder Leads with 1 Slots for 6" Wire Leads (10 pcs 1x18650). Here are the top ones.
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New generic Plastic Battery Storage Case Box Holder for 1 x 18650 Black with 6" Wire LeadsBrand new and high qualityBattery type: 10 pcs 1 x 3.7V 18650 Case HolderAfter the series output 3.7V is installed on the battery, do not touch the red black line,The screw can be fixed（Screw not attached）External connection: two 150mm red and black cable
Specs:
| Size | 10 pcs 1x18650 |
| Weight | 0.15 Pounds |
that battery tray you linked doesnt seem to be wired up. maybe this is more what you're looking for?
https://www.amazon.com/Sackorange-Battery-Storage-Plastic-1x18650/dp/B071JBRYF3/ref=sr_1_2?keywords=18650+battery+tray&qid=1551039435&s=gateway&sr=8-2
instead of a 12" tube i'd buy something flat that you can just curl up and insert into the cylinder.
the cooling fans just look like PC case fans. almost every PC guy would recommend Noctua fans for cooling a PC, here's a nice small 80mm that i think would work well, and a controller
https://www.amazon.com/Noctua-NF-A8-FLX-Premium-Computer/dp/B00NEMG9K6/ref=sr_1_2_sspa?keywords=pc+80mm+fan&qid=1551039869&s=gateway&sr=8-2-spons&psc=1&smid=A1Z5H6ZGWCMTNX
https://www.amazon.com/Noctua-NA-FC1-4-pin-PWM-Controller/dp/B072M2HKSN/ref=sr_1_4?keywords=pc+case+fan+controller&qid=1551039926&s=gateway&sr=8-4
and i did find some aparently suitable wire, in multiple colors so you can coordinate your color rails.
https://www.amazon.com/StrivedayTMFlexible-Silicone-Electric-electronic-electrics/dp/B01LH1G2IE/ref=sr_1_fkmr0_2?keywords=silicon+allterm+wire&qid=1551039773&s=gateway&sr=8-2-fkmr0
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