Search results

Date Relevance Most replies

  1. D

    What kind of charger?

    Alright then - I'm sold. I ordered one of these this morning. I'm going to pair it with one of these - xh-m602 http://www.ebay.com/itm/XH-M602-Lithium-Battery-Charging-Digital-Control-Module-Switch-Protection-Board-/172596727897?hash=item282f911059:g:9hMAAOSw4A5Y2Sr6 - as a failsafe in case...
  2. D

    What kind of charger?

    Absolutely agree - Battery medics are cheap and kind of cheesy - I keep at least one spare on hand because they do fail. I wish there was a high quality, adjustable (but reasonably affordable) equivalent. Especially one that could handle more discharge current / dissapate heat better. Anybody...
  3. D

    What kind of charger?

    So just to be sure - you are saying that despite the CC voltage max rating being 24 volts a CLG-100-24 http://www.trcelectronics.com/View/Mean-Well/CLG-100-24.shtml will actually charge to at least 25.2v - and would be a good choice for me to charge 6S at 4 amps?
  4. D

    What kind of charger?

    I don't have to tear them down at all. It's one battery pack but it has a power and balance lead for each internal 6S block. When I charge I use a parallel harness, and then a series harness for use on the bike. So far it's actually a pretty good alternative to a BMS, because I can use a 6s...
  5. D

    What kind of charger?

    Yeah, that sounds like a good contender.
  6. D

    What kind of charger?

    So these LED drivers Are safe and reliable? The price is certainly right. The charge starts out CC then transitions to CV as the current tapers down to almost nothing? I didn't know that LEDs had such complicated needs. I guess these are made for grow lights or something like that? I've...
  7. D

    What kind of charger?

    I actually tried to buy a Satiator to begin with, but the appropriate model was out of stock. That might be what I end up getting, but they sure are expensive. I'd like to consider other options before I jump. I actually have a cheesy imax charger that I can use for a little while. As long...
  8. D

    What kind of charger?

    25.2 maximum but I usually charge to 24.6 - I have 4 6s4p packs that I parallel charge and then connect 2 in series to use - 2 bikes.
  9. D

    What kind of charger?

    I'm having to replace my charger - what do you recommend? I need to be able to set to a specific custom voltage for my home built 18650 pack. Links or specific model numbers to search for would be greatly appreciated.
  10. D

    Charger Suddenly over charging !!!

    Miuan - Thanks! That is exactly what I was hoping to find. I just ordered one off of ebay - less than $9 - just search for xh-m602 https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR2.TRC0.A0.H0.Xxh-m602.TRS0&_nkw=xh-m602&_sacat=0 Every one else - Thanks for the...
  11. D

    Charger Suddenly over charging !!!

    Since last fall I've been using a charger I built using a Drok boost voltage regulator ( https://www.amazon.com/DROK-Numerical-Regulator-Converter-Adjustable/dp/B01GFVI6R6/ref=cm_cd_al_qh_dp_t ) to charge my home built 18650 battery packs for 2 bikes that my wife and I ride weekly - and no...
  12. D

    Is Voltage sag damaging to batteries?

    With Lithium battery packs: A voltage sag like yours indicates the pack is too small. I'm sure that's true to some extent. Bigger is always better in some way I suppose. But then again if it does what you want for a reasonable life span (hopefully) and at a price that you can afford... Your...
  13. D

    Is Voltage sag damaging to batteries?

    5-10% of resting voltage? Right? They are supposed to be good cells - Panasonic 18650 3400 mah. If I were doing it over I would configure the packs as 12s5p instead of 13s4p - sacrifice the performance that we aren't using anyway to gain battery resiliency. That would have taken 8 more...
  14. D

    Is Voltage sag damaging to batteries?

    I recently added voltage meters to the bikes that I put together for my wife and I... After a few rides with them, it's clear that whenever you "get on it" the voltage sags around 3-4 volts - probably more at times. So if you consider 3.3 volts per cell to be the danger zone (42.9 for my 13s...
  15. D

    No BMS - Do you use a fuse?

    Thanks - after a little more digging I see that you are absolutely correct. Any fuse will blow at its proper current rating (unless something malfunctions) regardless of the voltage - but a low voltage fuse used in a high voltage application may allow a long lasting arc that could result in...
  16. D

    Another No Solder/Weld 18650 Build (Updated 03/09/2014)

    Great job on this - and thanks for sharing your ideas and techniques with the rest of us. A kit to do this (minus cells) for a reasonable price would be game changing for home built ebikes. I just completed 2 simple bikes using ebay kits for which I built the battery packs out of 18650...
  17. D

    No BMS - Do you use a fuse?

    Lots of good suggestions here. However, most of them involve using fuses at a voltage that they weren't really designed for, which I don't really have a problem with but since it's kind of critical that whatever you use actually works when it is needed is there any way to mathematically...
  18. D

    No BMS - Do you use a fuse?

    If you aren't using a BMS do you use a fuse or circuit breaker? If so how do you size it?
  19. D

    How to Solar Charge an Electric Bicycle

    A few years ago we looked into helping our daughter build a house on a piece of land we own, but the cost of running 2000 ft of power lines through the woods was cost prohibitive (25-30K if I remember correctly) If I were building that house today I would put the $$ toward making it electrically...
  20. D

    9 miles, 320 lb guy, 20 mph, flat, winter

    There's a guy on YouTube - ElectricBike - who apparently has several bikes but only one battery pack with a long lead that he wears in a backpack. If you did that you could surely bring a backpack into work with you to keep it safe and warm, and a quick 5 mile commute wouldn't be long enough...
  21. D

    9 miles, 320 lb guy, 20 mph, flat, winter

    I'm new to this also, and don't want a fire either - But I can't always be there while batteries are charging. On top of trying to do it in a safe location, I put the batteries inside of a "fat 50" mil surplus ammo box (with a small hole for the charge leads to go through) and I bought a yard...
  22. D

    2 Controllers Toasted in 2 Minutes?

    We rode them about 10 miles today with no problems.
  23. D

    2 Controllers Toasted in 2 Minutes?

    Slow-Co, You weren't wrong. The problem was low voltage, but not for the reason you guessed - but your reply put me on the right track to figure it out. The LCD interface has lots of configurable things, and despite being sold as "36-48 volt" and the controller actually being labeled as 48v...
  24. D

    2 Controllers Toasted in 2 Minutes?

    I just finished assembling 2 ebay* kits http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=222117405994&view=all&tid=1775136905012 The homebuilt battery packs*** are 48v 20 amp and Should be about right for a 48V 1000W kit - I would think. Anyway, both bikes fired up - all systems go...
  25. D

    I THINK I know how to hook up this BMS??!

    "Maybe you should have told the vendor you wanted it set for 13S." I agree - in retrospect that IS what I should have done. But I'm a do-it-your-selfer and they said that it was a user configurable thing, and I just assumed that they would also tell how to do it. suggest the unused 14th...
Back
Top