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  1. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Almost ready to start testing. picked up an icharger 106b+, with CB1010 balance board. Still need to figure out which connectors to order to wire to battery/plug into balance board. Testing will start with 1 individual pack, leaving it complete with whatever built in bms it has. I'm...
  2. L

    Can we series BMS?

    An example of this strategy would be appreciated.
  3. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    When I begin testing these, would I solder the 3 leads of each polarity together and use that, or do I have to open each of these cells to remove that board? I'm not sure if what I'm assuming is a built in bms based on a few online searches. I'm guessing it is a bms based on the labels on the...
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    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Update- I picked up the batteries today. I carefully peeled back the covering and took some photos. Hopefully someone can make heads or tails of the board attached to them. breakdown: 1S2P 3 positive, all originating from the same solder point 3 negative, same thing. White wire originates...
  5. L

    Lipo vs "deep cycle" marine battery capacity question

    That's great, because the info I've been reading is pointing towards $3-400, which is pricey but acceptable long term. Problem is I don't know if I have several hundred duds or not so I'd like to limit my up front expenditures until I know what I have.
  6. L

    Lipo vs "deep cycle" marine battery capacity question

    Thanks very much for the replies guys. John, the provided wattage/amperage is only at roughly 3mph. WOT is 5mph, drawing upwards of 30 amps from what I've seen in testing posted by others of the same motor. I wanted a 15 mile range for the "drop me off at X, pick me up at Y" trips I like to...
  7. L

    Lipo vs "deep cycle" marine battery capacity question

    I'd happily use either of the 2 cell types. If it'd be much easier to use the 1S2P 10,400 Mah, I would. I just trying to drum up uses for the ones I have (and recently sold the torqeedo so the timing was right for a new battery setup for the minn kota thats replacing it. Question- I see...
  8. L

    Lipo vs "deep cycle" marine battery capacity question

    Yes, deck of a kayak, which previously ran a torqeedo 403 so I've never used a heavy marine or auto battery. The rig is a Jackson Big Tuna, and with my heavy self in the solo seat positiin I still prefer to put the battery up front. Hillhater, the cells will be TCL Hyperpower cells from a...
  9. L

    Lipo vs "deep cycle" marine battery capacity question

    dilkes, Would the data in the link apply to the lipo cells I intend to use? I'd go with 18650's if I didn't recently purchase a manufacturer liquidation stock of over 300 lipo packs originally intended for tablet use. "If you are drawing a 180 watts for 5 hours continuously, you need 900Wh of...
  10. L

    Lipo vs "deep cycle" marine battery capacity question

    Thanks for the replies guys. Use will be the front deck of a kayak. Likely enclosed in an aluminum or kevlar housing. The thing I wanted to wrap my head around the most is the rated Ah of a pack vs its actual usage Ah available if you're trying to charge to 4.15 V and discharge to 3.6...
  11. L

    Lipo vs "deep cycle" marine battery capacity question

    Hello guys, I'd like to ask a question (or several) about the capacity difference consideration when trying to calculate how large of a battery you would want to replace a deep cycle marine battery. I understand that a deep cycle battery is designed for more discharge than a regular lead acid...
  12. L

    Electric Schwinn Shuffle?

    Looks good, I'm considering a rear hub one of these as well myself down the road. Does anyone know if it's possible to swap the front fork out to a suspension fork?
  13. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Will do, I guess its a waiting game at the moment. I'm assuming if 2 of the wires are for thermal readings that would be a good thing, right? This cell has twice the amount of wires as I'd normally expect right? EDIT**
  14. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    John, yes with the volume of cells I have it will probably be in my best interest to get setup properly with gear. I'm following the thread you created and I'll hopefully get a clear picture of what I should have with relative affordability to get this project rolling. Hillhater, yes those...
  15. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    I certainly would be happy to take that option should that be on the table for someone. My only question would be: based on John's and others' advice it seems like I'll need my own testing equipment to test each individual cell prior to pack construction. I haven't dove into the differences in...
  16. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    As entrepreneurial as I have traditionally been, I hadn't considered that route. I'm assuming that may be a viable option since these seem to be a decent quality cell. I see them being sold on ebay and the like for $35-45 each (absolute highway robbery). I assume the bulk of that price is solely...
  17. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Ha, yeah I definitely didn't expect a consensus. I guess its just a waiting game until I get them home at the moment. I'll be following your new thread, and putting together the equipment I'll need for the build. I'm guessing I won't know much until I have answers about how these cells test...
  18. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Thanks for the info guys. I am a little confused on the wiring description, as it seems that Hill is describing potentially wiring the 3 cells for each pack together and treating it as 1 cell vs John's description of treating each cell as individual. Would they only get wired together so...
  19. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    I believe someone said I should never open the silver packs. OK, just so I understand this: Each cell inside the packs needs to be individually balanced? So the connectors get chopped regardless. I'm emailing the manufacturer with a few questions to assist in defining the composition of these...
  20. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Excellent. Thank you John.
  21. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Will do. I'm sure there's a significant amount of info on here regarding equipment options for testing/charging these. Is there anything specific to these cells that I should know about/take into consideration when looking into equipment?
  22. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    I'm shooting for 52v with the 1000w hub motor kits I've been eyeballing to use. What implications does 5A peak mean in regards to overall amp draw?
  23. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    John, Do you mean I'll have to cut open the silver bags and separate the individual cells? Hill, I knew the pack I was considering would be large, however 50lbs is definitely too heavy. 8kg is tolerable for me. For the type of cell I'm using, I've been informed it has to be larger than...
  24. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    That's understandable, and I've seen quite a few videos on balancing 18650's and similar since I originally intended to use those, but came across these. I'm hoping these are a high quality cell. They're made by TCL, have the ROHS stamping on the boxes and were used in the production of a $600...
  25. L

    Using Donor LIPO Cells with Individual Integrated BMS Per Cell for a DIY Pack?

    Thanks John and electric_nz, I believe 9p may end up being near my limit as I think I will have under 140 cells. Ill know when I pick them up. 7s packs x2 to get 52v pack 14 x 9p = 126 cells right? I couldn't imagine someone actually purchasing this particular type of battery retail to use...
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