Parts

https://www.retekess.com/ft11-fm-transmitter/

https://www.grainger.com/product/Pipe-PVC-6MV25

https://www.grainger.com/product/Pipe-PVC-1VEV4

https://bluerobotics.com/store/watertight-enclosures/locking-series/wte-flange-vp/

https://bluerobotics.com/store/watertight-enclosures/locking-series/wte-end-cap-vp/

https://www.pvcfittingsonline.com/847-020-2-schedule-80-pvc-cap.html

https://www.pvcfittingsonline.com/847-030-3-schedule-80-pvc-cap.html

https://bluerobotics.com/store/watertight-enclosures/2-series/spare-o-ring-set/

https://www.amazon.com/dp/B0C947C9QS?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://www.amazon.com/dp/B0B31NRSD2?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://www.amazon.com/dp/B072Z7Y19F?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://www.amazon.com/dp/B07NB3BK5H?psc=1&ref=ppx_yo2ov_dt_b_product_details

https://www.amazon.com/dp/B00LP25V1A?ref=ppx_yo2ov_dt_b_product_details&th=1

https://www.amazon.com/dp/B0C1G9GBRZ?ref=ppx_yo2ov_dt_b_product_details&th=1 

https://www.digikey.com/en/products/detail/mpd-memory-protection-devices/DU1-M-502/2439529

https://www.amazon.com/eBoot-Connector-Female-Cable-Battery/dp/B01M5AHF0Z/ref=sr_1_1_sspa?crid=2B9O17JC3N9EL&keywords=jst+connector&qid=1707691117&sprefix=jst+connector%2Caps%2C150&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

https://www.amazon.com/EBL-AA-Batteries-Technology-Rechargeable/dp/B00HSHLC82/ref=sr_1_3_sspa?keywords=aa%2Bbatteries&qid=1707163336&refinements=p_n_feature_seven_browse-bin%3A64613661011&rnid=64613658011&s=hpc&sr=1-3-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1

https://www.amazon.com/AEDIKO-Lithium-Protection-Over-Discharge-Over-Current/dp/B09MLXFH81/ref=sr_1_1?crid=318FJY1D3BDTI&keywords=3s+bms+aediko&qid=1706406946&sprefix=3s+bms+aediko%2Caps%2C139&sr=8-1

https://www.amazon.com/AWithZ-Handheld-Adjustable-Automatic-Stainless/dp/B0C4NJWM6F/ref=sr_1_4?crid=NKPAB6B5R34L&keywords=small+battery+welder&qid=1706058634&sprefix=small+battery+welder%2Caps%2C160&sr=8-4

https://www.amazon.com/Fermerry-Stranded-Flexible-Silicone-Electrical/dp/B089CRCXRK/ref=sr_1_2_sspa?crid=Z6GXZLK8WYVO&keywords=18%2Bgauge%2Bwire&qid=1706058492&s=industrial&sprefix=18%2Cindustrial%2C135&sr=1-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1

https://www.imrbatteries.com/samsung-50e-21700-5000mah-9-8a-battery/?gclid=Cj0KCQiAnrOtBhDIARIsAFsSe53rU0WGuwOZK8X7Oxv3kC2hDvhZTnLN1j8OajoSIhz3NzPZ2hGRIOcaAjkvEALw_wcB

https://www.amazon.com/0-15x8x100mm-Soldering-Capacity-U-S-Solid/dp/B07D6NGFPS?ref_=ast_sto_dp&th=1&psc=1

https://www.amazon.com/Rosin-Solder-Electrical-Soldering-0-3mm/dp/B08M5XDKFG?ref_=ast_sto_dp&th=1&psc=1

https://www.amazon.com/YIHUA-Professional-Digital-Soldering-Station/dp/B07RVMZNYR?ref_=ast_sto_dp&th=1&psc=1