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Useful information and parts to use when wanting to debug your batteries, failsafes, and tools you can use to rebuild your battery health, soas so-as not to let it completely die. 

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http://www.ebay.com/itm/iCharger-1010B-300W-10S-10A-USB-Port-LiPo-Balance-Battery-Charger-Lilo-LiFe-DC-/131821938229?hash=item1eb1332635:g:mE4AAOSwxj5XP~1O

http://www.ebay.ca/itm/SKYRC-iMAX-B6-Mini-Professional-Balance-Charger-Discharger-for-RC-Battery-C9R5-/172137972118?hash=item2814390196:g:o2YAAOSwq7JUFluP

JSTXH cables

Used to debug cells in batteries. Can be connected to hobby chargers, or Cell Loggers. 

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http://www.ebay.ca/itm/10PCS-9Pin-8S-Terminal-Wire-Balance-Charger-Male-Female-JST-XH-Connector-Wire-/172292829850?hash=item281d73f29a:g:sOIAAOSwnQhXoQuM

Lithium Battery Holder

50 Pcs dual battery: https://www.amazon.ca/Lithium-Battery-Double-Holder-Bracket/dp/B011HFLFEG/ref=sr_1_fkmr0_4?s=hi&ie=UTF8&qid=1486922860&sr=1-4-fkmr0&keywords=18650+Lithium+Battery+holder+100pcs

Plastic Battery Holder

http://www.ebay.ca/itm/301922588049

Notes