question about diy 18650 battery packs- Mtbr.com
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  1. #1
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    Reputation: Sanoske312's Avatar
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    question about diy 18650 battery packs

    I'm pretty sure this has been asked before but what is the best way to make your own 18650 battery pack for dx p7 bike light. I'm a complete noob when it comes to this stuff. I've already got the batteries but am from that part on. any help would be greatly appreciated
    Haro Shift R7 RS Sid, Fox Float RL, XT/Lx Mix, 2x9 FSA Carbon Pro Team with BBG Bashguard
    Rockhopper Comp, IH Quantium 2

  2. #2
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    You can solder up packs, but it's not the best idea to do with Lithium batteries unless you know what you are doing. The batteries are unstable enough as they are. The best thing to do is get one of the battery holders that a few members here have for sale. That way you can charge the batteries individually. It's a lot safer.

    There is a reason that you can't buy rechargeable Lithium ion cells at the drugstore. They can be dangerous if mishandled. Pretty much all consumer lithium rechargeable batteries come with a built in protection circuit. I first started using lithium ion and polymer batteries several years ago in RC airplanes. That application was tough on the batteries and on occasion one would catch on fire while charging.

  3. #3
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    Reputation: yetibetty's Avatar
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    Sanoske, as you say that you are a complete noob when it comes to Li-ion then you should find this helpfull: http://www.batteryuniversity.com/partone.htm

  4. #4
    Carbon8er
    Reputation: El34's Avatar
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    I have some info on my web site you may like to look at.

    Wiring batteries in Series, Parallel and Series/Parallel
    http://www.el34world.com/Misc/bike/BikesLights1.htm

    4 x 18650 battery holder info
    http://www.el34world.com/Misc/bike/BatteryHolder2.htm

    good luck
    Last edited by El34; 08-28-2009 at 01:32 PM.

  5. #5
    mtbr member
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    Keep em separate as it's way better. Allows for safer charging, easy cell replacement, etc. Check the below out, and this thread >> http://forums.mtbr.com/showthread.php?t=544415

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